How to Form an LLC in Seattle, WA — 2026 Filing Guide

Required?

Yes

Who can serve

Washington resident individual with a physical WA street address (no PO boxes) available during normal business hours, or a registered Washington business entity authorized to act as RA

Can I serve myself?

Yes

Commercial RA cost

~$100/yr

Washington Certificate of Formation does not require member names on the public filing — only the registered agent name and address are publicly disclosed. Using a commercial RA service keeps your personal address off the CCFS public record and ensures reliable receipt of Annual Report reminders, legal process, and state mail. Out-of-state owners must use a commercial WA RA since Washington requires RA to be a WA resident or registered WA entity.

Renewing or switching? Compare standalone registered agent services — Northwest, Harbor Compliance, Registered Agents Inc., InCorp, and more.

1. Search for name availability through the Washington SOS (CCFS) Use the Washington Corporations & Charities Filing System (CCFS) at ccfs.sos.wa.gov to confirm your desired LLC name is available and not confusingly similar to an existing WA entity. The name must include a valid LLC designator under RCW 25.15.006. Optional: reserve the name for 180 days ($30) while you prepare documents.
2. Appoint a Washington registered agent Designate a registered agent with a physical Washington street address (no PO boxes) who is available during normal business hours to accept service of process. Washington requires the RA to be a Washington resident individual or a registered Washington business entity — out-of-state individuals cannot serve as WA RA. Commercial RA services ($50–$150/yr) ensure compliance and keep your personal address off the public record.
3. File Certificate of Formation ($200) with the Washington Secretary of State File online through CCFS at ccfs.sos.wa.gov. The Certificate requires the LLC name, principal office address, registered agent name and WA street address, and organizer signature. Pay the $200 filing fee online. Standard processing: same-day to 2 business days — one of the fastest formation timelines among high-cost Pacific Northwest states.
4. Draft an Operating Agreement An Operating Agreement governs member ownership percentages, voting rights, profit and loss allocations, management authority, capital contributions, and dissolution procedures under RCW 25.15.018. Not filed with the state but strongly recommended for all multi-member Seattle LLCs. For tech, real estate, and professional services firms in Seattle, a detailed OA is essential before taking on partners or investors.
5. Obtain an EIN from the IRS Apply for an EIN at irs.gov/ein after the Certificate of Formation is approved. The online application takes under 15 minutes and provides the EIN immediately. Print the CP 575 EIN Confirmation Letter for bank account opening and state/city tax registrations.
6. Register with the Washington Department of Revenue for B&O Tax Register your LLC with the WA Department of Revenue at dor.wa.gov to obtain a Washington Business License ($19 fee). This registration covers state B&O tax, retail sales tax (if applicable), and other state business taxes. Washington has no state income tax, but the B&O gross receipts tax applies to most business activities. LLCs earning under $12,000/yr in gross Washington income may qualify for the B&O small business credit.
7. Obtain a Seattle Business License (if operating within Seattle city limits) All businesses with annual gross revenue over $20,000 operating within Seattle city limits must register for a Seattle Business License and pay the Seattle Business License Tax. Register at seattle.gov/license-and-tax-administration. The flat annual fee is $110/yr for businesses with taxable gross income under $100,000. Businesses exceeding $100K gross revenue owe Seattle B&O tax computed on gross receipts by classification — adding to the state B&O obligation. Filing is annual; the due date aligns with the calendar year.
8. File WA Annual Report in your anniversary month ($71) Washington LLCs must file an Annual Report with the Secretary of State each year in the LLC's anniversary month. Fee: $71. File through CCFS at ccfs.sos.wa.gov. Failure to file results in administrative dissolution. Washington's $71 Annual Report is among the lowest recurring annual LLC fees on the Pacific Coast.
9. Open a business bank account Bring your EIN Confirmation Letter, Certificate of Formation, and Operating Agreement to the bank. Seattle-area banks (Chase, Wells Fargo, KeyBank, Washington Federal, Banner Bank) require an EIN and formation documents. Maintaining a separate business account is the single most important step for preserving the LLC's liability protection and simplifying B&O tax calculations.

Washington Limited Liability Company Act, RCW Chapter 25.15; Certificate of Formation: RCW 25.15.071; Registered agent: RCW 25.15.006; Annual Report: RCW 25.15.300; Operating Agreement: RCW 25.15.018; Washington B&O Tax: RCW Chapter 82.04; Seattle Business License Tax: Seattle Municipal Code Chapter 5.45; Seattle Business License: SMC 6.208; WA Department of Revenue registration: RCW 82.32.030; IRS guidance on single-member LLC disregarded entity treatment.

Direct filing portal: https://ccfs.sos.wa.gov/

Formation context

Who should form in Washington?

Recommended for

Seattle-area entrepreneurs, tech founders, and small business owners who want no-state-income-tax treatment while operating in Washington; Pacific Northwest businesses in technology, e-commerce, professional services, real estate, and healthcare headquartered in the Seattle metro; Out-of-state investors establishing a Washington presence — understanding the WA B&O and Seattle B&O surcharge layers is critical before formation

Tax treatment (default)

Pass-through by default at the federal level: single-member LLCs are disregarded entities (Schedule C); multi-member LLCs are partnerships (Form 1065). Washington has no state income tax — LLC pass-through income is not taxed at the WA state level for individual members. Washington does impose a B&O gross receipts tax (0.291%–0.484% of gross receipts by classification) and Seattle adds its own B&O surcharge. No franchise tax. Washington's combination of no state income tax + B&O gross receipts tax creates a unique planning environment where revenue-stage businesses may pay more B&O relative to income-stage businesses.

For businesses physically operating in Seattle, forming directly in Washington ($200 formation + $71/yr Annual Report) avoids the dual-state cost of Wyoming or Delaware formation plus WA foreign qualification (~$200 foreign registration). Wyoming's charging-order protection and anonymous formation advantages are meaningful for holding structures — but for an operating Seattle business, Washington home-state formation is almost always the lower-cost choice. See the WA vs. WY LLC Formation comparison for the full breakdown.

No publication requirement in Washington — unlike New York or Nebraska, you do not need to publish notice in a newspaper after filing.

FAQ

Common Washington (Seattle) LLC formation questions

Still deciding between an LLC, sole proprietorship, S-Corp, or C-Corp? Our entity-type comparison breaks down formation cost, tax treatment, liability shield, and compliance complexity for all four structures side by side.

Once your LLC clears ~$80K in annual net profit, an S-Corp election (IRS Form 2553) typically saves $5,000–$15,000/year in self-employment taxes by splitting owner income into a W-2 salary + tax-free distributions. The election is free — Form 2553 has no IRS filing fee. The key decision factors: your net income level, a defensible reasonable-compensation salary, and the 75-day Form 2553 filing window after LLC formation.

Already operating as a sole proprietor, or wondering whether a cheap county DBA filing ($10–$100) is enough instead of forming an LLC? A DBA lets you operate under a trade name — but provides zero liability protection. Our DBA vs LLC comparison breaks down exactly when a DBA is sufficient and when you need a state LLC filing.

Missing your annual report deadline triggers late fees and — if left long enough — administrative dissolution, which voids your LLC's liability shield until reinstated. Know your Washington deadline, fee, and the consequences of missing it.

Also see the LLC annual report requirements hub for state-by-state deadlines, fees, late penalties, and reinstatement rules.

If your LLC opens an office, hires employees, or regularly does business in another state, you must foreign-qualify there — or face fines, back taxes, and loss of standing to sue. Our foreign qualification guide covers when you need it, how to file a Certificate of Authority, and what it costs.

Your Articles of Organization are filed — now make your LLC operational. Four actions every new LLC owner needs to take:

Formation gets your LLC into existence; contracts, trademark protection, operating agreement review, and vendor-document review keep it usable. Compare subscription and per-document legal platforms before you rely on a template or pay a local attorney retainer.

Commingling personal and business funds is the #1 way LLC owners lose their liability shield. A separate business account — in your LLC's legal name, with your EIN — is the foundational act of corporate formality. Mercury, Novo, Bluevine, Relay, and Found open same-day with no monthly fees. Compare online banks vs. Chase and Bank of America.

How you pay yourself depends on your LLC's tax classification — not what you call the transfer. A disregarded single-member LLC pays via owner draw with SE tax on all net profit. An S-Corp-elected LLC splits income between a W-2 salary (FICA applies) and tax-free distributions. Getting this wrong triggers IRS audit risk and SE-tax errors.

Single-member LLCs file Schedule C with their personal Form 1040 (due April 15). Multi-member LLCs file Form 1065 by March 15. S-Corp-elected LLCs file Form 1120-S by March 15. Know your form, your deadline, and the common deductions — home office, vehicle, retirement contributions, and startup costs — before your first April filing.