Washington LLC amendment filing support

Research steps and summary: I ran targeted web searches and scraped authoritative Washington Secretary of State (SOS) pages, official SOS fillable forms, and reliable practitioner resources to collect up-to-date (Jan 2026) guidance about amending a Washington LLC’s formation/registration records.

Key primary sources were the SOS Amended Certificate of Formation PDF, the SOS LLC filing resource page, and the SOS Filings & Forms information page. I also reviewed practitioner guidance (ZenBusiness, registered-agent resources) for practical tips and common pitfalls.

Key findings (concise): - Form used: "Amended Certificate of Formation (LLC)" for domestic WA LLCs; "Amendment of Foreign Registration" for foreign (out-of-state) LLCs registered in WA. (SOS forms and resource pages.) - Filing methods: Online filing available through the Secretary of State online portal (ccfs.sos.wa.gov); fillable PDF mail-in forms are also provided. (SOS resource page.) - Required identifiers: Provide the LLC name exactly as recorded and the UBI number — they must match SOS records for acceptance. (SOS amended certificate instructions.) - Typical content required: current recorded information, clear statement of what is being changed (show current text vs. amended text or describe change), selection of effective date (upon filing or a later date up to the statutory limit), and indication if registered agent changed. (SOS form instructions; practitioner guidance.) - Fees & expedite: Standard filing fee is $

Research steps and summary: I ran targeted web searches and scraped authoritative Washington Secretary of State (SOS) pages, official SOS fillable forms, and reliable practitioner resources to collect up-to-date (Jan 2026) guidance about amending a Washington LLC’s formation/registration records.

Key primary sources were the SOS Amended Certificate of Formation PDF, the SOS LLC filing resource page, and the SOS Filings & Forms information page. I also reviewed practitioner guidance (ZenBusiness, registered-agent resources) for practical tips and common pitfalls.

Key findings (concise):

• Form used: "Amended Certificate of Formation (LLC)" for domestic WA LLCs; "Amendment of Foreign Registration" for foreign (out-of-state) LLCs registered in WA. (SOS forms and resource pages.)
• Filing methods: Online filing available through the Secretary of State online portal (ccfs.sos.wa.gov); fillable PDF mail-in forms are also provided. (SOS resource page.)
• Required identifiers: Provide the LLC name exactly as recorded and the UBI number — they must match SOS records for acceptance. (SOS amended certificate instructions.)
• Typical content required: current recorded information, clear statement of what is being changed (show current text vs. amended text or describe change), selection of effective date (upon filing or a later date up to the statutory limit), and indication if registered agent changed. (SOS form instructions; practitioner guidance.)
• Fees & expedite: Standard filing fee is $

Expedited service (if requested) requires an additional $

Fees are nonrefundable. (SOS forms & pages; SOS instructions.) - Effective date options

Amendments may take effect upon filing or a specified later date; practitioner guidance notes a specified date cannot be more than 90 days after filing. (SOS form language and practitioner summaries.) - Signatures & authority: The amendment must be executed by an authorized person (per the LLC’s governance/operating agreement or statutory requirement); the form indicates an executor must be authorized. (SOS form and practitioner guidance.) - Registered agent & other changes: The amendment form contains fields about registered agent change — in some cases changes to registered agent may be handled via a separate Statement of Change form. Use SOS guidance for the correct form. (SOS pages.) - Corrections: A universal "Statement of Correction" form exists to correct errors in previously filed documents. (SOS Filings & Forms page.) - Statutory citations: RCW chapters referenced on SOS materials include RCW 25.15 (Washington LLC statutes) and RCW 23.95. (SOS form header.) - Foreign LLCs: Use the "Foreign Registration Amendment" form to report changes that are recorded in the home jurisdiction; fee is the same ($30). (SOS resource page.) - Practical compliance checklist (for business owners/founders):

Confirm exact LLC name and UBI;

Decide what portion of the certificate/registration you are amending;

Draft clear "current vs. amended" language;

Choose effective date (immediate or specified, not beyond allowed window);

Get required authorization/signature(s);

File online (recommended) or mail with $30 fee and optional $50 expedite;

Retain filing confirmation and updated certificate;

Update operating agreement, IRS (EIN) details if required, bank accounts, licenses, permits, and local registrations;

If changing registered agent, confirm whether amendment form or Statement of Change is required;

Use Statement of Correction for mistakes. Next steps if you want a deliverable

I can now draft the full blog post content (SEO-optimized) and a newsletter draft using the supplied metadata (title, slug, meta description, keywords, excerpt, tags) that incorporates the state-specific filing steps, sample amendment language, a downloadable checklist, and links to the SOS forms and statutes. Tell me if you want the post to include sample form text for common amendments (name change, registered agent change, address change) and step-by-step screenshots for the online filing portal.