Compliance package for foreign founders

I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses. Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. Banking & payments (as soon as EIN available)- Open a US business bank account; prepare KYC files (passports, EIN letter, formation docs, beneficial‑owner list, registered agent info).

Consider fintech options (Mercury, Brex) if remote onboarding is needed. Ongoing reporting & tax filings (annual / quarterly milestones)- Federal income tax returns (Form 1120 for C‑Corps, Form 1120‑F for foreign corps with US trade/business, 1040‑NR for individual nonresident owners where applicable).- Form 5472 + pro‑forma 1120 for foreign‑owned DEs, filed with the entity’s tax return by its due date (with extensions available).- State filings annual reports, franchise taxes, state income/sales tax returns, payroll tax deposits and filings.- Withholding returns: Forms 1042/1042‑S, Form 945/941 for employment withholding.State-specific highlights (quick notes)- Delaware: widely used for incorporation (especially C‑Corps).

Delaware corporations must file an annual report and pay franchise tax (annual deadlines and penalties apply). Consider foreign qualification in other states where you operate.(See legal guidance noting Delaware franchise tax obligations.)- California: imposes a minimum $800 franchise tax for many entities doing business in CA; foreign qualification and nexus rules are strict (remote activity or having employees can create obligations).- New York: corporate tax includes minimums and has specific rules for nexus and apportionment; sales tax and employer withholding rules are also strict.- Texas: no individual income tax but has a franchise tax; sales tax and employment tax rules apply.- Florida: no personal state income tax and popular for formations, but requires annual reports and fees; businesses may still have sales tax and other obligations.- Wyoming: attractive for privacy and low tax burden (no state corporate or personal income tax) but watch for nexus in other states where you generate revenue or have employees.(Notes above compiled from guidance comparing state tax and filing rules; always confirm with the state SOS / Dept of Revenue.)Key deadlines & penalties (high‑priority items)- FinCEN BOI (March 26, 2025 interim rule): domestic U.S. entities exempted; foreign reporting companies must meet BOI filing deadlines—pre‑March 26, 2025 registrations generally had to file by April 25, 2025; post‑March 26 registrations file within 30 calendar days after registration is effective.

Watch FinCEN updates.- Form 5472: file as an attachment to the reporting corporation’s income tax return by the due date (including extensions). Failure to file can trigger severe penalties and enforcement; practitioners routinely cite large penalties for missing Form 5472 deadlines (e.g., $25,000, often cited in practitioner guides — confirm via IRS notices/guidance and professional counsel).- Withholding: failure to collect and deposit withholding (chapter 3/chapter 4 for payments to foreign persons, employment withholding) can lead to significant penalties and interest.

Use Pub. 515 to identify withholding responsibilities and forms.Recommended documents to include in the compliance package- Formation files: Articles/Incorporation, stamped filing receipt, registered agent agreement.- Tax ID: EIN confirmation, list of owners with percent ownership, owner passports and contact details, ITIN paperwork if applicable.- Governance: Operating Agreement/Bylaws, ownership/stock ledger, board/member meeting minutes and resolutions.- Reporting templates: Form 5472 checklist and pro‑forma 1120 template, BOI filing checklist and FinCEN ID instructions if required, sample W‑8BEN/W‑8BEN‑E and W‑9 intake forms, withholding agent checklist (Forms 1042/1042‑S), payroll setup checklist.- Banking & KYC bundle: formation docs, EIN, beneficial owner ID, signed banking resolution, proof of address, invoices/merchant docs.- Compliance calendar: federal and state return dates, BOI and any initial/exemptions, payroll deposit schedule, state annual report dates.Service providers & tools to consider- Registered agent service in formation and operating states.- International‑friendly banks or fintechs (Mercury, Brex, etc.) plus a US bank with international experience.- US tax/accounting firm experienced with foreign‑owned entities (for Form 5472, multi‑state filings, transfer pricing, and payroll).- Immigration counsel (if founders plan to work in the US).Next steps (recommended) Decide entity type and formation state, sign up registered agent, and file formation documents.

Apply for EIN immediately (Form SS‑4). Evaluate BOI reporting obligations (foreign vs. domestic reporting company).

Register for state taxes in states where you operate or have nexus. Set up bookkeeping and payroll, and retain a US tax adviser experienced with foreign owners.

Build the compliance package folder (documents listed above) and a compliance calendar with reminders. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. Banking & payments (as soon as EIN available)- Open a US business bank account; prepare KYC files (passports, EIN letter, formation docs, beneficial‑owner list, registered agent info).

Consider fintech options (Mercury, Brex) if remote onboarding is needed. Ongoing reporting & tax filings (annual / quarterly milestones)- Federal income tax returns (Form 1120 for C‑Corps, Form 1120‑F for foreign corps with US trade/business, 1040‑NR for individual nonresident owners where applicable).- Form 5472 + pro‑forma 1120 for foreign‑owned DEs, filed with the entity’s tax return by its due date (with extensions available).- State filings annual reports, franchise taxes, state income/sales tax returns, payroll tax deposits and filings.- Withholding returns: Forms 1042/1042‑S, Form 945/941 for employment withholding.State-specific highlights (quick notes)- Delaware: widely used for incorporation (especially C‑Corps).

Delaware corporations must file an annual report and pay franchise tax (annual deadlines and penalties apply). Consider foreign qualification in other states where you operate.(See legal guidance noting Delaware franchise tax obligations.)- California: imposes a minimum $800 franchise tax for many entities doing business in CA; foreign qualification and nexus rules are strict (remote activity or having employees can create obligations).- New York: corporate tax includes minimums and has specific rules for nexus and apportionment; sales tax and employer withholding rules are also strict.- Texas: no individual income tax but has a franchise tax; sales tax and employment tax rules apply.- Florida: no personal state income tax and popular for formations, but requires annual reports and fees; businesses may still have sales tax and other obligations.- Wyoming: attractive for privacy and low tax burden (no state corporate or personal income tax) but watch for nexus in other states where you generate revenue or have employees.(Notes above compiled from guidance comparing state tax and filing rules; always confirm with the state SOS / Dept of Revenue.)Key deadlines & penalties (high‑priority items)- FinCEN BOI (March 26, 2025 interim rule): domestic U.S. entities exempted; foreign reporting companies must meet BOI filing deadlines—pre‑March 26, 2025 registrations generally had to file by April 25, 2025; post‑March 26 registrations file within 30 calendar days after registration is effective.

Watch FinCEN updates.- Form 5472: file as an attachment to the reporting corporation’s income tax return by the due date (including extensions). Failure to file can trigger severe penalties and enforcement; practitioners routinely cite large penalties for missing Form 5472 deadlines (e.g., $25,000, often cited in practitioner guides — confirm via IRS notices/guidance and professional counsel).- Withholding: failure to collect and deposit withholding (chapter 3/chapter 4 for payments to foreign persons, employment withholding) can lead to significant penalties and interest.

Use Pub. 515 to identify withholding responsibilities and forms.Recommended documents to include in the compliance package- Formation files: Articles/Incorporation, stamped filing receipt, registered agent agreement.- Tax ID: EIN confirmation, list of owners with percent ownership, owner passports and contact details, ITIN paperwork if applicable.- Governance: Operating Agreement/Bylaws, ownership/stock ledger, board/member meeting minutes and resolutions.- Reporting templates: Form 5472 checklist and pro‑forma 1120 template, BOI filing checklist and FinCEN ID instructions if required, sample W‑8BEN/W‑8BEN‑E and W‑9 intake forms, withholding agent checklist (Forms 1042/1042‑S), payroll setup checklist.- Banking & KYC bundle: formation docs, EIN, beneficial owner ID, signed banking resolution, proof of address, invoices/merchant docs.- Compliance calendar: federal and state return dates, BOI and any initial/exemptions, payroll deposit schedule, state annual report dates.Service providers & tools to consider- Registered agent service in formation and operating states.- International‑friendly banks or fintechs (Mercury, Brex, etc.) plus a US bank with international experience.- US tax/accounting firm experienced with foreign‑owned entities (for Form 5472, multi‑state filings, transfer pricing, and payroll).- Immigration counsel (if founders plan to work in the US).Next steps (recommended) Decide entity type and formation state, sign up registered agent, and file formation documents.

Apply for EIN immediately (Form SS‑4). Evaluate BOI reporting obligations (foreign vs. domestic reporting company).

Register for state taxes in states where you operate or have nexus. Set up bookkeeping and payroll, and retain a US tax adviser experienced with foreign owners.

Build the compliance package folder (documents listed above) and a compliance calendar with reminders.

I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses. Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. Banking & payments (as soon as EIN available)- Open a US business bank account; prepare KYC files (passports, EIN letter, formation docs, beneficial‑owner list, registered agent info).

Consider fintech options (Mercury, Brex) if remote onboarding is needed. Ongoing reporting & tax filings (annual / quarterly milestones)- Federal income tax returns (Form 1120 for C‑Corps, Form 1120‑F for foreign corps with US trade/business, 1040‑NR for individual nonresident owners where applicable).- Form 5472 + pro‑forma 1120 for foreign‑owned DEs, filed with the entity’s tax return by its due date (with extensions available).- State filings annual reports, franchise taxes, state income/sales tax returns, payroll tax deposits and filings.- Withholding returns: Forms 1042/1042‑S, Form 945/941 for employment withholding.State-specific highlights (quick notes)- Delaware: widely used for incorporation (especially C‑Corps).

Delaware corporations must file an annual report and pay franchise tax (annual deadlines and penalties apply). Consider foreign qualification in other states where you operate.(See legal guidance noting Delaware franchise tax obligations.)- California: imposes a minimum $800 franchise tax for many entities doing business in CA; foreign qualification and nexus rules are strict (remote activity or having employees can create obligations).- New York: corporate tax includes minimums and has specific rules for nexus and apportionment; sales tax and employer withholding rules are also strict.- Texas: no individual income tax but has a franchise tax; sales tax and employment tax rules apply.- Florida: no personal state income tax and popular for formations, but requires annual reports and fees; businesses may still have sales tax and other obligations.- Wyoming: attractive for privacy and low tax burden (no state corporate or personal income tax) but watch for nexus in other states where you generate revenue or have employees.(Notes above compiled from guidance comparing state tax and filing rules; always confirm with the state SOS / Dept of Revenue.)Key deadlines & penalties (high‑priority items)- FinCEN BOI (March 26, 2025 interim rule): domestic U.S. entities exempted; foreign reporting companies must meet BOI filing deadlines—pre‑March 26, 2025 registrations generally had to file by April 25, 2025; post‑March 26 registrations file within 30 calendar days after registration is effective.

Watch FinCEN updates.- Form 5472: file as an attachment to the reporting corporation’s income tax return by the due date (including extensions). Failure to file can trigger severe penalties and enforcement; practitioners routinely cite large penalties for missing Form 5472 deadlines (e.g., $25,000, often cited in practitioner guides — confirm via IRS notices/guidance and professional counsel).- Withholding: failure to collect and deposit withholding (chapter 3/chapter 4 for payments to foreign persons, employment withholding) can lead to significant penalties and interest.

Use Pub. 515 to identify withholding responsibilities and forms.Recommended documents to include in the compliance package- Formation files: Articles/Incorporation, stamped filing receipt, registered agent agreement.- Tax ID: EIN confirmation, list of owners with percent ownership, owner passports and contact details, ITIN paperwork if applicable.- Governance: Operating Agreement/Bylaws, ownership/stock ledger, board/member meeting minutes and resolutions.- Reporting templates: Form 5472 checklist and pro‑forma 1120 template, BOI filing checklist and FinCEN ID instructions if required, sample W‑8BEN/W‑8BEN‑E and W‑9 intake forms, withholding agent checklist (Forms 1042/1042‑S), payroll setup checklist.- Banking & KYC bundle: formation docs, EIN, beneficial owner ID, signed banking resolution, proof of address, invoices/merchant docs.- Compliance calendar: federal and state return dates, BOI and any initial/exemptions, payroll deposit schedule, state annual report dates.Service providers & tools to consider- Registered agent service in formation and operating states.- International‑friendly banks or fintechs (Mercury, Brex, etc.) plus a US bank with international experience.- US tax/accounting firm experienced with foreign‑owned entities (for Form 5472, multi‑state filings, transfer pricing, and payroll).- Immigration counsel (if founders plan to work in the US).Next steps (recommended) Decide entity type and formation state, sign up registered agent, and file formation documents.

Apply for EIN immediately (Form SS‑4). Evaluate BOI reporting obligations (foreign vs. domestic reporting company).

Register for state taxes in states where you operate or have nexus. Set up bookkeeping and payroll, and retain a US tax adviser experienced with foreign owners.

Build the compliance package folder (documents listed above) and a compliance calendar with reminders. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. I performed web research and extracted authoritative guidance to build a comprehensive compliance package for foreign founders of US businesses.

Below is a consolidated, action-oriented package (checklist, state-specific notes, timelines, penalties, and recommended documents/providers) based on the materials collected.Executive summary (what foreign founders must prioritize)- Entity formation and registered agent: choose entity type (Delaware C‑Corp common for VC; LLC for small/service businesses) and appoint a registered agent in the formation state.

Maintain a US mailing address via the agent for official notices.- Federal tax IDs and information returns: obtain an EIN (Form SS‑4) for the entity; foreign owners may need ITINs. Foreign‑owned U.S. disregarded entities (DEs) must file a pro‑forma Form 1120 with Form 5472 attached; many foreign‑owned entities have Form 5472 filing obligations.- Beneficial ownership (BOI) obligations: as of FinCEN’s March 26, 2025 interim rule, domestic U.S. entities are exempt from BOI reporting but foreign reporting companies (foreign legal entities registered to do business in the U.S.) must file BOI reports under new deadlines—reporting companies registered before March 26, 2025 generally had to file by April 25, 2025; companies registered on/after March 26, 2025 must file within 30 calendar days after their registration is effective.

Monitor FinCEN guidance for updates.- Withholding and information reporting: payments to foreign persons (employees, contractors, passive payees) are subject to chapter 3/chapter 4 withholding rules; use the W‑8 series for documentation and file Form 1042/1042‑S and other required returns.

Publication 515 is the primary IRS resource on withholding rules for foreign persons.- State compliance: register (foreign‑qualify) in states where you “do business.” Many states impose annual reports, franchise taxes, or minimum taxes (examples below).

Sales tax economic nexus and state filing thresholds must be monitored and registered for by state.- Banking & KYC: expect identity and ownership documentation for bank onboarding (EIN, formation docs, passports, beneficial‑owner info).

Some fintech banks allow remote onboarding, but traditional banks often require in‑person verification.- Recordkeeping & penalties: maintain clear records of related‑party transactions, payroll, and filings.

Penalties for missing specific filings (for example, failure to file Form 5472 can trigger large penalties).Practical compliance package (what to assemble and when)1) Formation & governance (Day 0–30)- Formation documents (Articles of Organization/Incorporation), stamped filing receipt, Certificate of Good Standing (when required).- Registered agent agreement and US mailing address.- Operating Agreement or Bylaws, initial resolutions, ownership register (beneficial owners and percent ownership).- EIN (Form SS‑4) confirmation letter (apply promptly).

If owners need ITINs, start W‑7 applications early.2) Federal tax & reporting setup (Day 0–60)- Determine entity tax classification (LLC default vs. electing C‑Corp via Form 8832 or S‑Corp eligibility for residents only).- For foreign‑owned U.S.

DEs: prepare a pro‑forma Form 1120 and attach Form 5472 each year by the tax return due date (including extensions).- Set up withholding processes and understand required documentation (W‑8BEN, W‑8BEN‑E, W‑8ECI, W‑8IMY).

Register for Forms 1042/1042‑S processing if you will pay US‑source income to foreign persons.- Add FATCA/Withholding reporting workflows where relevant (Form 8966 references).3) BOI & beneficial owner disclosures (immediate)- Evaluate whether the entity qualifies as a reporting company under the Corporate Transparency Act and FinCEN rules (note the March 26, 2025 interim final rule that narrowed reporting companies to certain foreign entities registered to do business in the U.S.).

If required, file BOI via FinCEN’s e‑filing system within the applicable deadline.4) State & local compliance (Day 0–60, ongoing)- Foreign qualification in states where you have nexus (employees, physical presence, sales nexus).

Register with state Department of Revenue for sales/use tax and employer withholding as required.- Calendar of state annual reports and franchise taxes for your chosen states and any states where you operate.5) Payroll & HR (before first hire)- Register for employer withholding and unemployment insurance in the relevant states.

Complete appropriate I‑9/W‑4/W‑2 processes for US employees; nonresident aliens may need special handling for withholding and treaties. Banking & payments (as soon as EIN available)- Open a US business bank account; prepare KYC files (passports, EIN letter, formation docs, beneficial‑owner list, registered agent info).

Consider fintech options (Mercury, Brex) if remote onboarding is needed. Ongoing reporting & tax filings (annual / quarterly milestones)- Federal income tax returns (Form 1120 for C‑Corps, Form 1120‑F for foreign corps with US trade/business, 1040‑NR for individual nonresident owners where applicable).- Form 5472 + pro‑forma 1120 for foreign‑owned DEs, filed with the entity’s tax return by its due date (with extensions available).- State filings annual reports, franchise taxes, state income/sales tax returns, payroll tax deposits and filings.- Withholding returns: Forms 1042/1042‑S, Form 945/941 for employment withholding.State-specific highlights (quick notes)- Delaware: widely used for incorporation (especially C‑Corps).

Delaware corporations must file an annual report and pay franchise tax (annual deadlines and penalties apply). Consider foreign qualification in other states where you operate.(See legal guidance noting Delaware franchise tax obligations.)- California: imposes a minimum $800 franchise tax for many entities doing business in CA; foreign qualification and nexus rules are strict (remote activity or having employees can create obligations).- New York: corporate tax includes minimums and has specific rules for nexus and apportionment; sales tax and employer withholding rules are also strict.- Texas: no individual income tax but has a franchise tax; sales tax and employment tax rules apply.- Florida: no personal state income tax and popular for formations, but requires annual reports and fees; businesses may still have sales tax and other obligations.- Wyoming: attractive for privacy and low tax burden (no state corporate or personal income tax) but watch for nexus in other states where you generate revenue or have employees.(Notes above compiled from guidance comparing state tax and filing rules; always confirm with the state SOS / Dept of Revenue.)Key deadlines & penalties (high‑priority items)- FinCEN BOI (March 26, 2025 interim rule): domestic U.S. entities exempted; foreign reporting companies must meet BOI filing deadlines—pre‑March 26, 2025 registrations generally had to file by April 25, 2025; post‑March 26 registrations file within 30 calendar days after registration is effective.

Watch FinCEN updates.- Form 5472: file as an attachment to the reporting corporation’s income tax return by the due date (including extensions). Failure to file can trigger severe penalties and enforcement; practitioners routinely cite large penalties for missing Form 5472 deadlines (e.g., $25,000, often cited in practitioner guides — confirm via IRS notices/guidance and professional counsel).- Withholding: failure to collect and deposit withholding (chapter 3/chapter 4 for payments to foreign persons, employment withholding) can lead to significant penalties and interest.

Use Pub. 515 to identify withholding responsibilities and forms.Recommended documents to include in the compliance package- Formation files: Articles/Incorporation, stamped filing receipt, registered agent agreement.- Tax ID: EIN confirmation, list of owners with percent ownership, owner passports and contact details, ITIN paperwork if applicable.- Governance: Operating Agreement/Bylaws, ownership/stock ledger, board/member meeting minutes and resolutions.- Reporting templates: Form 5472 checklist and pro‑forma 1120 template, BOI filing checklist and FinCEN ID instructions if required, sample W‑8BEN/W‑8BEN‑E and W‑9 intake forms, withholding agent checklist (Forms 1042/1042‑S), payroll setup checklist.- Banking & KYC bundle: formation docs, EIN, beneficial owner ID, signed banking resolution, proof of address, invoices/merchant docs.- Compliance calendar: federal and state return dates, BOI and any initial/exemptions, payroll deposit schedule, state annual report dates.Service providers & tools to consider- Registered agent service in formation and operating states.- International‑friendly banks or fintechs (Mercury, Brex, etc.) plus a US bank with international experience.- US tax/accounting firm experienced with foreign‑owned entities (for Form 5472, multi‑state filings, transfer pricing, and payroll).- Immigration counsel (if founders plan to work in the US).Next steps (recommended) Decide entity type and formation state, sign up registered agent, and file formation documents.

Apply for EIN immediately (Form SS‑4). Evaluate BOI reporting obligations (foreign vs. domestic reporting company).

Register for state taxes in states where you operate or have nexus. Set up bookkeeping and payroll, and retain a US tax adviser experienced with foreign owners.

Build the compliance package folder (documents listed above) and a compliance calendar with reminders.