Morton, Washington sales tax rate: 8%
Last updated Checked monthly
The sales tax rate in Morton, Washington is 8%. That’s the 6.5% state rate plus 1.5% in local taxes. It’s higher than 2 of the 110 Washington cities we checked, and 14 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Morton combined rate
8%
- Washington state
- 6.5%
- Lewis CountyCounty
- 1.5%
Morton sales tax calculator
Enter a price and what you’re selling.
- WashingtonState · 6.5%$6.50
- Lewis CountyCounty · 1.5%$1.50
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoMorton sales tax rate breakdown
State and county taxes add up to 8%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Washington | State | 6.5% |
| Lewis County | County | 1.5% |
| Combined rate | 8% |
Rate history
- July 20237.8%
- July 20247.8%
- July 20258%
- July 20268%
- Today8%
Changed since July 2023.
Charge the right rate in Morton, on every order.
Zamp calculates tax at each customer’s address, then files and pays every Washington return for you, with a sales tax team you can call.
Morton sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Morton, Washington?
The combined sales tax rate in Morton is 8% as of November 2, 2026. It’s made up of 6.5% Washington state tax, 1.5% Lewis County.
Does the sales tax rate vary within Morton?
Morton has no special-district taxes, so most addresses in the city pay the same 8%: Washington’s 6.5% plus 1.5% county tax. This rate was calculated for Morton’s 98356 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Morton?
Yes, at the full 8%.
Do online sellers have to collect sales tax in Morton?
Yes, if they have nexus in Washington: more than $100,000 in Washington sales in the previous or current calendar year, or a physical presence in the state. They register with the Washington State Department of Revenue and charge the rate at the buyer’s address.
Sources. Washington State Department of Revenue · Zamp Sales Tax API, for Morton’s 98356 ZIP code. Rates are checked monthly and are for information, not tax advice.
Sales tax, off your plate.
Zamp registers you, calculates every order at the customer’s address, files every Washington return and handles notices, with a sales tax team you can call.
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