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Washington Sales Tax Guide for Small Businesses

Everything you need to know about sales tax in Washington — rates, deadlines, exemptions, and how to stay compliant without the headache.

Last updated March 2026

Quick Facts

State Rate

6.50%

Avg. Combined

9.18%

Filing Frequency

Monthly, Quarterly, or Annual

Vendor Discount

No

Home Rule

No

Washington Sales Tax Rates

Washington's state sales tax rate is 6.50%. Cities and counties can add local taxes on top. The average combined rate across Washington is 9.18%.

The highest combined rate in the state can reach up to 10.60% in some jurisdictions.

Filing Deadlines & Frequency

Filing Frequency

Monthly, Quarterly, or Annual — assigned by WA DOR based on tax liability

Due Dates

25th of the month after the reporting period

File Online

Washington State Department of Revenue — My DOR: https://dor.wa.gov/

What's Taxable for Restaurants & Food Businesses

Prepared Food

Yes — prepared food and restaurant meals are taxable at the full 9.18% combined rate.

Grocery Food

Exempt from sales tax. Grocery food is exempt. Prepared food, soft drinks, candy, and dietary supplements are taxable.

Alcohol

Subject to sales tax plus a separate spirits sales tax of 20.5% and a $3.7708/liter spirits liter tax

Vendor Discount

Washington does not currently offer a vendor discount for timely filing.

Penalties for Late Filing

Late Filing Penalty

5% per month, max 25%, plus 9% assessment penalty if audited

Interest

IRS rate + 2%, adjusted annually

Miss a deadline and Washingtonstarts charging penalties and interest immediately. That adds up fast on a busy restaurant's tax bill.

TaxAside's On-Time Guarantee covers up to $5,000 in penalties if we ever file late.

Calculate Your Washington Sales Tax

Washington Sales Tax Calculator
$
State tax (6.50%)$0.00
Est. local tax (2.68%)$0.00
Total tax (9.18%)$0.00
Total with tax$0.00

This calculator uses average combined rates. Your actual rate depends on your exact location.

Get your exact rate →

How TaxAside Helps in Washington

  • Daily set-asides mean no tax-day surprises. We pull, calculate, set aside, and file — you do nothing.
  • On-Time Guarantee covers up to $5,000 in penalties if we're ever late filing your Washington return.
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5-minute setup. No credit card required.

Related State Guides

Idaho

6.03% avg. combined

Oregon

No sales tax

Tired of worrying about Washington sales tax?

Let TaxAside handle it. We connect to your POS, set aside the right amount every day, and file your return on time — guaranteed.

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5-minute setup. No credit card required.

Additional Notes

  • • No state income tax — Washington relies heavily on sales and B&O tax revenue
  • • Washington has destination-based sourcing — tax rate depends on delivery address