Washington taxes through the Washington Department of Revenue at a 6.5% statewide base rate, with local rates stacking on top and economic nexus for remote sellers at $100,000 in sales. Filing runs monthly, quarterly, or annually by liability. For e-commerce & online sellers, that combination is what decides how much of your month-end is bookkeeping and how much is compliance.
Employer registration runs through the Washington Employment Security Department, and the entity is registered with the Washington Secretary of State. No income tax, but the Business and Occupation tax applies to gross receipts by activity classification and is reported alongside sales tax.
Sales tax authority
Washington Department of Revenue — 6.5% statewide base rate
Economic nexus
$100,000 in sales
Filing cadence
Monthly, quarterly, or annually by liability
Employer registration
Washington Employment Security Department
Entity registration
Washington Secretary of State
Sales tax nexus in Washington
Economic nexus in Washington is $100,000 in sales. For e-commerce & online sellers, that threshold is the one to watch, because it is reached by selling into the state — no office, no staff, no physical presence required. Once you cross it you are expected to register with the Washington Department of Revenue and begin collecting. We track your Washington sales against it and tell you before you cross, not after.
Marketplace sales vs. your own channels in Washington
Marketplace facilitator rules mean large platforms generally collect and remit Washington tax on sales made through them. Your own site, wholesale, and direct sales are a different matter — those remain yours to collect and report. Keeping the two streams separate in the books is what makes the Washington Department of Revenue return match reality.
Washington rates and sourcing
The Washington statewide base rate is 6.5%. Local rates stack on top and are generally sourced to the delivery address, so the effective rate varies within the state. Getting sourcing right is what keeps the liability account matching what you actually collected.
Filing cadence in Washington
Washington assigns filing frequency by liability — monthly, quarterly, or annually by liability. Because Washington includes an annual bracket, a low-volume seller here can go a full year between filings, which is exactly when a liability account drifts unnoticed. We reconcile it monthly regardless of when the return is due.
We keep the books. You run the business.
Categorization, reconciliation, month-end close, and clean financial statements — with nothing left for you to chase.
View pricingHow It Works
Free review
We check where your e-commerce & online sellers books stand and whether Washington activity has crossed $100,000 in sales.
Register what is needed
Accounts set up with the Washington Department of Revenue, plus the Washington Employment Security Department if you have employees here.
Catch up
Back periods cleaned up at a fixed quoted price, including any Washington liability that was collected but never reconciled.
Close on cadence
Monthly close worked backward from your Washington due dates — monthly, quarterly, or annually by liability.
E-Commerce & Online Sellers Bookkeeping in Washington — Frequently Asked Questions
Do I need to register for sales tax in Washington?
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How often would I file in Washington?
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Who do I actually deal with in Washington?
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Do you prepare my income tax return?
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E-Commerce & Online Sellers bookkeeping in Washington
Book a free consultation. We will check where your books stand and whether your Washington activity has crossed $100,000 in sales.
- Done-for-you
- Solo or group
- Nationwide
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