Washington LLC Taxes Explained: The B&O Deep Dive
Washington has no personal income tax — but the Business & Occupation (B&O) tax is a real, recurring cost on your gross revenue, not your profit, with no deductions for costs. Here's exactly how it works, with an estimator that shows both sides honestly.
State B&O generally taxes gross receipts rather than profit, with classification-specific rates and available credits. There is no blanket 2026 B&O exemption below $250,000. DOR may grant active non-reporting status below $125,000 in annual B&O gross income when all conditions are met, including no retail-sales-tax collection or other DOR tax/fee duty and the public-utility limit where applicable. Existing filers must request a status change. The $250,000 filing-relief threshold takes effect January 1, 2029. City B&O and sales-tax filings remain separate.
- State personal income tax
- None
- B&O tax basis
- Gross receipts, not net profit
- B&O rate range
- Classification-specific; service up to 2.1%
- Small business reporting relief
- Conditional below $125,000 in 2026
- Local city B&O tax
- Yes — Seattle, Tacoma, others, on top
- Sales tax
- 6.5% + local, avg ~9.37%
The Tax Layers in Washington
Federal: income + self-employment tax
Pass-through profits hit your 1040 at your federal bracket, plus 15.3% SE tax on 92.35% of net profit — this applies regardless of state.
Washington state income tax: none
Washington levies no personal income tax. LLC members pay $0 in state income tax on distributed profit — this part is genuinely simple.
B&O tax: the real cost most "no income tax" headlines skip
A gross receipts tax, no deductions, owed even at a loss — see the full deep dive below.
Sales tax: 6.5% + local (if applicable)
Combined average around 9.37%. See Step 7.
B&O + Self-Employment Tax Estimator
Washington B&O + Self-Employment Tax Estimator
Models gross receipts (not just profit) · educational estimate
B&O Classifications, Explained
Washington has over 40 B&O classifications, but most small LLCs fall into one of these:
| Classification | Rate | Applies To |
|---|---|---|
| Retailing | 0.471% | Selling physical goods to consumers |
| Wholesaling / Manufacturing | 0.484% | Selling to other businesses / making products |
| Service & Other Activities | 1.5% / 1.75% / 2.1% | Prior-year business/affiliated-group service taxable income determines the tier; exceptions apply. |
| Gambling / Certain Financial | 3.3% | Specific regulated activities |
For 2026, Service & Other Activities uses 1.5% below $1 million, 1.75% from $1 million to under $5 million, and 2.1% at $5 million or more, based on prior-calendar-year taxable income in that classification for the business or affiliated group. Exceptions apply to hospitals, real estate brokers and select advanced-computing businesses. Current-period receipts do not select the prior-year tier.
Local City B&O Tax: A Second Layer
The state B&O tax isn't necessarily the whole picture. Cities including Seattle, Tacoma, Bellevue, and Bellingham impose their own separate local B&O tax, with their own rates, thresholds, and returns — entirely independent from the state B&O tax. If you operate in one of these cities, budget for a genuinely separate filing and payment, not just a higher combined rate on the same return.
The S-Corp Question in Washington
An S-Corp election changes federal taxation: reasonable salary (payroll-taxed) plus distributions that escape the 15.3% SE tax. File Form 2553 — never Form 8832. Since Washington has no state income tax, the S-Corp election here is purely a federal SE-tax play — it does not reduce your B&O tax exposure at all, since B&O applies to gross receipts regardless of your entity's federal tax election. Run the numbers with a Washington CPA before electing.
Your Washington Tax Calendar
| Date | What's Due |
|---|---|
| Apr 15 / Jun 15 / Sep 15 / Jan 15 | Quarterly estimated taxes — federal, on pass-through profit |
| Anniversary month | Annual Report to the Secretary of State ($70) |
| Monthly / Quarterly / Annual | B&O tax return — frequency depends on your tax liability |
| Apr 15 | Form 1040 — no separate state income tax return needed |
| Monthly/Quarterly | Sales tax returns, if applicable |
For 2026, the maximum small-business credit is $160 per month if at least 50% of taxable amounts are in the qualifying classifications listed in RCW 82.04.4451, otherwise $55 per month, times months in the reporting period. The credit phases down as liability rises. Actual claims must use DOR’s required tables/My DOR. The enacted $375/$125 monthly maxima begin January 1, 2029; do not use them for 2026. Filing relief is separate: in 2026 the conditional active-nonreporting gross-income threshold is $125,000; existing filers request DOR approval and other tax/fee/collection conditions apply. The $250,000 threshold begins January 1, 2029. There is no blanket 2026 $250,000 tax exemption.
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2026 credit and later effective dates
For 2026, the maximum small-business credit is $160 per month if at least 50% of taxable amounts are in the qualifying classifications listed in RCW 82.04.4451, otherwise $55 per month, times months in the reporting period. The credit phases down as liability rises. Actual claims must use DOR’s required tables/My DOR. The enacted $375/$125 monthly maxima begin January 1, 2029; do not use them for 2026.
Washington LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. For filing and ongoing compliance, confirm the requirements with the responsible state agency. This is educational information, not legal or tax advice.
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