Key Takeaways
- Washington has no state personal income tax — LLC owners pay federal income tax on profits only
- Business & Occupation (B&O) Tax: Gross receipts tax with no deduction for costs, labor, or expenses: 0.471% for retailing (rising to 0.5% January 1, 2027), 0.484% for wholesaling/manufacturing (rising to 0.5% January 1, 2027), and a tiered rate for services — 1.5% under $1M in prior-year gross receipts, 1.75% for $1M–$5M, 2.1% for $5M+. A new 0.5% surcharge applies above $250 million in Washington taxable income, 2026–2029., due Filed with the Department of Revenue on a frequency (monthly, quarterly, or annual) assigned by revenue volume
- Sales Tax: 6.5% state rate (combined: Combined average around 9.51%, with peaks of 10.6%–10.7% (Lynnwood, Edmonds); King/Pierce/Snohomish counties add a 1.4% Sound Transit RTA surtax)
- Annual Report due Last day of the LLC's anniversary month, $70 (increased from $60 under SHB 2248, enacted March 2026) fee
- Federal self-employment tax of 15.3% applies to net LLC profit regardless of state
- Washington recognizes the federal S-Corp election automatically — but since Washington has no personal income tax, the election provides zero state-level benefit. The B&O Tax and the capital gains tax are both entirely unaffected by S-Corp election.
- Same-day formation and compliance filing available through LLC Attorney at no markup on state fees
Washington has no personal income tax, but don't mistake that for 'tax-free' — the Business & Occupation (B&O) Tax applies to nearly every LLC's gross receipts, with no deduction for costs, labor, or expenses. That means even a thin-margin or loss-making business owes B&O tax on every dollar of revenue it brings in.
This guide covers exactly what a Washington LLC owes in 2026: the B&O Tax and its rate tiers by business type, the $70 Annual Report, Washington's above-average combined sales tax rate, and why an S-Corp election is purely a federal calculation here.
Washington Personal Income Tax on LLC Profit
By default, a Washington LLC is a pass-through entity for federal tax purposes — profit flows to the owners' 1040s with zero state personal income tax, since Washington doesn't tax wages or ordinary business income. The catch is that Washington taxes the entity's gross receipts directly, through the Business & Occupation Tax described next — so 'no income tax' doesn't mean 'no state tax bill.'
Washington has no state personal income tax. Your LLC's profit passes through to your personal federal return, but there is no additional state-level income tax layer on top of it — a meaningful, permanent savings compared to income-tax states.
Washington's Business & Occupation (B&O) Tax
Virtually every Washington LLC with in-state gross receipts owes the Business & Occupation Tax — it's assessed on revenue itself, not net income, and there's no minimum-revenue exemption comparable to Texas's franchise tax threshold. Service businesses face a tiered rate depending on prior-year gross receipts (1.5% to 2.1%), while retailing and wholesaling sit at a much lower flat rate around 0.47%–0.48%. This is the single most important fact for anyone relocating a business to Washington expecting a truly 'tax-free' state.
The B&O Tax applies to essentially every Washington LLC's gross receipts, regardless of profitability — there's no deduction for cost of goods sold, labor, or overhead, so a low-margin or even loss-making LLC still owes B&O tax on every dollar it brings in. Electing S-Corp status has no effect — B&O is based on gross receipts, not federal tax classification.
Washington Sales Tax
Most retail sales of tangible personal property and taxable services require registration and collection. Washington uses destination-based sourcing, meaning the tax rate is determined by where the buyer receives the goods or service, not where your business is located — a detail that matters for e-commerce and delivery-based businesses selling across county lines.
- State rate: 6.5% state rate, combined: Combined average around 9.51%, with peaks of 10.6%–10.7% (Lynnwood, Edmonds); King/Pierce/Snohomish counties add a 1.4% Sound Transit RTA surtax
- Registration: Washington Business License Application, Approximately $50, plus any applicable city business license fees fee with the Washington Department of Revenue
- The Department of Revenue assigns your filing frequency — monthly, quarterly, or annual — based on your estimated revenue volume.
Washington Annual Report Requirement
Washington requires every LLC to file Annual Report with the Washington Secretary of State, due Last day of the LLC's anniversary month. Filing fee: $70 (increased from $60 under SHB 2248, enacted March 2026).
The Secretary of State dissolves or revokes an LLC's status once its annual report is 120 days late.
Reinstatement requires filing all delinquent reports plus back fees and a reinstatement fee through the Secretary of State's office.
Federal Self-Employment Tax and How Your Washington LLC Is Classified
Regardless of which state you're in, LLC owners who materially participate in the business owe federal self-employment tax — 15.3% on net profit, covering Social Security (up to the $184,500 (2026) wage base) and Medicare (no cap).
Single-Member LLCs
A single-member Washington LLC defaults to a disregarded entity — you report income on Schedule C and compute self-employment tax on Schedule SE. Washington adds no personal income tax filing, but the B&O Tax still applies to gross receipts at the entity level.
Multi-Member LLCs
A multi-member Washington LLC defaults to partnership taxation, filing Form 1065 and issuing Schedule K-1s. The B&O Tax and annual report obligations apply identically regardless of member count.
Should Your Washington LLC Elect S-Corp Taxation?
An S-Corp election lets you split LLC profit into a reasonable salary (payroll-taxed) and distributions (not subject to self-employment tax), once the business is consistently profitable enough to justify the added payroll complexity.
Washington's treatment: Washington recognizes the federal S-Corp election automatically — but since Washington has no personal income tax, the election provides zero state-level benefit. The B&O Tax and the capital gains tax are both entirely unaffected by S-Corp election.
Because Washington has no personal income tax, the entire benefit of an S-Corp election is federal: reducing self-employment tax by splitting profit into salary and distributions. Neither the B&O Tax nor the narrow capital gains tax changes based on entity election, so there's no Washington-side factor to weigh.
Washington LLC Tax Costs at a Glance
How to Handle Your Washington LLC's Taxes
If You Do It Yourself
Step 1 — Get your federal EIN before anything else.
Apply for your EIN for free directly at irs.gov — a purely federal application with no Washington-specific step.
Step 2 — Confirm your default federal tax classification.
A single-member LLC defaults to a disregarded entity (Schedule C); a multi-member LLC defaults to partnership taxation (Form 1065 plus Schedule K-1 for each member). Neither requires a separate election — this is automatic unless you file Form 8832 or Form 2553 to change it.
Step 3 — Skip state income tax registration entirely.
Washington has no state personal income tax, so there's no state withholding or estimated-payment system to register for on the income side.
Step 4 — Register for sales tax if you sell taxable goods or services.
File Washington Business License Application with the Washington Department of Revenue at dor.wa.gov, Approximately $50, plus any applicable city business license fees fee. The Department of Revenue assigns your filing frequency — monthly, quarterly, or annual — based on your estimated revenue volume.
Step 5 — Register for payroll/reemployment tax the moment you hire your first employee.
The moment you hire your first employee, register with the Washington Employment Security Department. The 2026 taxable wage base is $78,200 (up from $72,800), with new-employer rates varying by industry classification, generally in the low single digits.
Step 6 — Set up quarterly estimated tax payments.
Because Washington has no personal income tax, your estimated-payment obligations are federal income tax and self-employment tax, plus — separately — your ongoing B&O Tax filing obligation with the Department of Revenue based on your assigned filing frequency.
Step 7 — Calendar your Business & Occupation (B&O) Tax due date.
Business & Occupation (B&O) Tax (Washington excise tax return, filed through the Department of Revenue's online system) is due Filed with the Department of Revenue on a frequency (monthly, quarterly, or annual) assigned by revenue volume, Gross receipts tax with no deduction for costs, labor, or expenses: 0.471% for retailing (rising to 0.5% January 1, 2027), 0.484% for wholesaling/manufacturing (rising to 0.5% January 1, 2027), and a tiered rate for services — 1.5% under $1M in prior-year gross receipts, 1.75% for $1M–$5M, 2.1% for $5M+. A new 0.5% surcharge applies above $250 million in Washington taxable income, 2026–2029.. Missing it puts your LLC in bad standing with the Washington Department of Revenue.
Step 8 — File your Annual Report every Washington deadline.
Annual Report is due Last day of the LLC's anniversary month with the Washington Secretary of State, $70 (increased from $60 under SHB 2248, enacted March 2026) fee. Missing it triggers $25.
Step 8 — Decide whether an S-Corp election makes sense once your LLC is consistently profitable.
Because Washington has no personal income tax, the entire benefit of an S-Corp election is federal: reducing self-employment tax by splitting profit into salary and distributions. Neither the B&O Tax nor the narrow capital gains tax changes based on entity election, so there's no Washington-side factor to weigh.
Step 9 — Watch for Washington-specific tax traps.
Washington's 'no income tax' reputation masks real, ongoing state tax exposure through the B&O Tax: because it taxes gross revenue rather than profit, a business with thin margins — or even one operating at a net loss — still owes B&O tax on every dollar of receipts. Founders relocating from true no-entity-tax states are frequently surprised by this, since 'no income tax' doesn't mean 'no revenue tax.'
Step 10 — Keep business and personal finances completely separate.
Commingling funds is the single biggest reason courts pierce the LLC liability shield, and it also makes tax preparation far more error-prone. Run all business income and expenses through a dedicated business bank account and keep receipts.
If LLC Attorney Does It for You
- Submit your information at llcattorney.com — entity classification, expected revenue, and whether you'll be hiring employees or collecting sales tax.
- LLC Attorney obtains your EIN, registers you with the Washington Department of Revenue and Washington Department of Revenue as needed, and sets up your compliance calendar for Annual Report and Business & Occupation (B&O) Tax.
- Receive reminders before every deadline through your client portal, plus access to flat-fee attorney consultations (no retainer) when an S-Corp election or multi-state question needs a licensed professional's judgment call.
When Should You Talk to a Tax Professional About Your Washington LLC?
A CPA is worth engaging at formation to correctly classify your revenue for B&O Tax purposes (the rate difference between retailing and services is substantial), to model cash flow given that B&O Tax is owed on gross receipts even in a loss year, and to evaluate any multi-state nexus if you sell into other states from Washington.
Is Washington a State Where Tax Complexity Matters More?
Washington's B&O Tax requires classifying your revenue into the correct category (retailing, wholesaling, manufacturing, or one of several service tiers) and applying the right rate to each — a business with multiple revenue streams may need to apportion gross receipts across categories. There's also no netting against expenses, so cash-flow planning has to account for B&O Tax due on top-line revenue, not bottom-line profit.
What You Actually Get With LLC Attorney's Washington Compliance Service
Washington's B&O Tax surprises a lot of relocating founders because it's owed on revenue, not profit — a loss year doesn't mean a $0 B&O bill. LLC Attorney's Washington service helps you get the classification and filing cadence right from the start.
- EIN obtained for you at no extra charge.
- State tax and sales tax registration handled as part of formation, starting at $49.
- An ongoing compliance subscription (available through an ongoing compliance subscription — contact LLC Attorney for current pricing) tracks every Washington deadline — Annual Report, Business & Occupation (B&O) Tax, and registered agent renewal.
- Access to professionally trained Business Success Advisors at no charge, plus flat-fee attorney consultations (no retainer) for S-Corp election analysis and multi-state nexus questions.
Washington's B&O Tax runs on revenue, not profit, so getting the classification right matters from day one — LLC Attorney keeps your filings accurate and on schedule.
Get Your Washington LLC's Taxes Set Up Correctly
Getting your EIN, tax registrations, and compliance calendar right from day one prevents expensive corrections later. LLC Attorney's Washington formation service starts at $49, and an ongoing compliance subscription (available through an ongoing compliance subscription — contact LLC Attorney for current pricing) keeps you ahead of every deadline after that. See our full pricing for all service tiers.
Frequently Asked Questions
Yes, functionally — Washington's Business & Occupation (B&O) Tax is a mandatory gross receipts tax applying to nearly every LLC's revenue, with rates from about 0.47% (retailing) to 2.1% (higher-tier services). Unlike an income tax, it applies even to a business operating at a net loss, since it's based on revenue, not profit.
Only if you sell taxable tangible personal property or services. Register through the Washington Business License Application (roughly $50, plus any city fees), then collect the 6.5% state rate plus local add-ons — combined rates average around 9.51%, with some cities reaching 10.6%–10.7%.
Every Washington LLC files an Annual Report with the Secretary of State, due by the last day of the LLC's anniversary month, for a $70 fee (increased from $60 in March 2026). This is separate from the ongoing B&O Tax filings owed to the Department of Revenue.
A late Washington Annual Report accrues a $25 late fee, and the Secretary of State will dissolve or revoke the LLC's status once the report is 120 days late. Reinstatement requires filing all delinquent reports plus back fees and a reinstatement fee.
Since Washington has no personal income tax, an S-Corp election provides zero state-level benefit — the B&O Tax applies identically to LLCs and S-corps because it's based on gross receipts, not federal tax classification. The entire benefit of electing S-Corp status here is federal self-employment tax savings.
A single-member Washington LLC defaults to a disregarded entity for federal tax purposes — you report income on Schedule C and pay self-employment tax via Schedule SE. Washington adds no state income tax filing, but the B&O Tax still applies to gross receipts at the entity level.
If your LLC does business in a state other than the one it's formed in — an office, employees, inventory, or significant sales there — you may have created nexus requiring registration and tax obligations in that state too. This is fact-specific and worth a conversation with a tax professional if you operate in multiple states.
For a typical Washington LLC with in-state owners and no employees: no state personal income tax, but the B&O Tax on gross receipts (0.47%–2.1% depending on business type), a $70 Annual Report, plus federal income tax and 15.3% federal self-employment tax (up to the $184,500 Social Security wage base for 2026). Add roughly 9.51% combined sales tax if you sell taxable goods or services.
Yes. LLC Attorney's ongoing compliance subscription tracks your Washington filing deadlines, handles your Annual Report, and connects you with flat-fee attorney consultations (no retainer) when a tax question needs a licensed professional's judgment call.