Sales Tax in Washington, Kansas in 2025

We'll walk you through how the sales tax rate is determined for Washington and address some common questions you may have. We'll also cover how to collect, audit, and remit sales tax in Washington.

Plus, we’ll share the best solution that will ensure you are always compliant across the entire sales tax lifecycle.

Disclaimer: Our sales tax data is updated on a quarterly basis.

Washington Sales Tax Rate 2025

Washington is located in Washington County in Kansas, United States, and has a sales tax rate of 8.50%. This includes local and state sales tax rates.

Here is the breakdown of the Washington's sales tax:

Tax Jurisdiction	Sales Tax Rate
State Tax	6.50%
County Tax	1.00%
City Tax	1.00%
Combined Rate	8.50%

Sales Tax Rates in Washington by Zip Codes and Districts

Let’s see the sales tax rates in Washington broken down by zip codes and districts:

District	Zip Codes	Combined Sales Tax Rate
Washington County	66968	8.50%

How Does the Washington Sales Tax Compare to the Rest of Kansas?

Washington’s 8.50% sales tax rate is 2.00% lower than the highest sales tax rate in Kansas, which stands at 10.50% in cities like Neodesha.

It is 2.00% higher than the lowest sales tax rate in Kansas, which stands at 6.50% in cities like Alexander.

To give you a better idea, here’s a comparison of Washington sales tax rates with a few other cities in Kansas:

City	Sales Tax Rates
Neodesha	10.50%
Wathena	8.50%
Washington	8.50%
Walton	8.50%
Alexander	6.50%

What Creates Sales Tax Nexus in Washington?

Washington shares the same sales tax nexus rules as Kansas. 

Read More: Check out this detailed guide on Sales Tax in Kansas.

You have sales tax nexus in Washington if you meet one of the following conditions:

• Physical Nexus: Businesses with an office or warehouse in Kansas. 
• Delivery: Businesses that use company vehicles or contract carriers other than interstate common carriers to deliver products in the state.
• Employees: Businesses that have sales or service representatives in the state.
• Economic Nexus: Out-of-state businesses whose gross sales in Kansas exceed $100,000 in the current or previous year. 

What Products Are Exempt from Washington Sales Tax?

Washington follows the same sales tax exemption rules as Kansas and doesn't have any unique exemptions of its own. 

The items exempt from sales tax in Washington are:

• Aircraft sales, parts, and repair services for aircraft used in interstate or foreign commerce.
• Drugs and pharmaceuticals sold to veterinarians. Medical supplies and durable medical equipment purchased by a nonprofit skilled nursing home. 
• Machinery and equipment for farming.
• Seeds, chemicals, and services purchased to prevent soil erosion on agricultural land.
• Ingredients or component parts, like paper and ink for publishing newspapers are part of a finished product to be sold to the final consumer.

Who Needs a Sales Permit in Washington?

A sales permit or seller’s permit is usually granted by the state. 

Any business that has a physical presence and meets economic nexus must apply for a sales permit in Washington.

You can register for a sales tax permit online via the Department of Revenue website. You can also register offline by submitting the Business Tax Application. 

How to Collect Sales Tax in Washington

Kansas is a destination-based sales tax sourcing state. 

This means that when you make a taxable retail sale to a customer in Washington, from outside or within the state, you must apply the sales tax rate based on the buyer’s shipping address.

Learn more about origin-based and destination-based sales tax sourcing here.

How to File and Pay Sales Tax in Washington

Here are some ways you can file Washington sales tax returns:

• File online: Use the Kansas Department of Revenue Customer Service Center to file single and multiple jurisdiction sales and use tax returns.

• File by mail: You can use Form ST-36 for multiple jurisdiction filers and file and pay through the mail.

• Let Zamp handle your Kansas sales tax filing and remittance so you won’t have to deal with sales tax returns ever again!