Kintsugi logo
+1 (415) 840-8847LoginGet Started

The Ultimate Guide To Washington Sales Tax

Welcome to our handy guide on Washington sales tax. We'll walk you through everything you need to know, from the specific sales tax rates in different counties and cities across Washington to answering some of the most common questions. Plus, we'll guide you on how to efficiently collect and file your sales tax in Washington.

Sales Tax Rate


Local Rate?



Washington Department of Revenue

Sales Threshold


Tax Line

(360) 705-6705

Transactions Threshold


What is Nexus?

You'll need to collect sales tax in Washington if you have nexus there. There are two main ways that sellers can be tied to a state when it comes to nexus: physical, or economic.

Physical nexus means having enough tangible presence, or activity in a state to merit paying sales tax in that state.

Economic nexus means passing a states' economic threshold, for total revenue, or the number of transactions in that state.

Calculating Nexus in Washington

Physical Nexus

Physical nexus is like having a tangible presence in Washington. If your business has an office, a warehouse, or even sales reps wandering through the state, you've got physical nexus. It's your business's way of leaving a mark in Washington.

Economic Nexus

This one's all about the numbers. If your business racks up over $100,000 in sales or more than 200 transactions in Washington within a year, that's economic nexus for you. It's like crossing a sales threshold that waves a flag to the tax folks.

Affiliate Nexus

Think of affiliate nexus like a family gathering that brings in the tax obligations too. If your business is connected to another entity in Washington—think subsidiary or parent company—you're looking at affiliate nexus. It's a bit like the tax version of 'the more, the merrier.'

Click-Through Nexus

The digital twist to nexus. If you score sales via a Washington-based website's referral link, that's click-through nexus. It's the online equivalent of leaving digital breadcrumbs leading straight to the tax office.

Marketplace Nexus

Selling through an online marketplace like Amazon or Etsy? If they're tangled in Washington's tax net, so are you.
Did you know logo

Washington taxes cooked chicken but not raw chicken, a highly-important distinction in culinary tax law. Wanna know another secret? The most delicious shellfish in the country are from Washington. If you’re ever there, make sure to try Kumamoto oysters and geoduck, which is native to the coast of Washington and British Columbia.

Sales Tax Registration in Washington

How to Get Your Washington Sales Tax Permit

Let's smoothly walk you through this, just like a leisurely stroll through a Washington apple orchard.

Step-by-Step Registration for Sales Tax in Washington

Diving into sales tax registration in Washington is a key step for your business, and we're here to guide you through it. Think of this as your roadmap to tax compliance.

The Washington Business License Application (BLA)

To kick things off, you'll need to complete the Business License Application (BLA) online via the Washington State Department of Revenue's MyDOR system. This step is akin to introducing your business to the tax world. You'll provide details like your business structure, contact info, and sales estimates. It's all about making a great first impression!

BLA Application Fee and Processing Time

After filling out the form, you'll pay an application fee and submit your application, akin to setting the wheels in motion. The processing time is typically around 2 weeks but can stretch out a bit during busy periods. It's a bit like the anticipation of waiting for a response to an important invitation.

Getting Your Unified Business Identifier (UBI) Number

Once your application gets the green light, you'll receive your Unified Business Identifier (UBI) number and a sales tax endorsement. These are your golden tickets to the world of Washington sales tax. Armed with these, you're all set to start collecting sales tax in the state.

Cost of Registering for a Washington Sales Tax License

There's a modest cost associated with this registration. You're looking at a $19 fee for the Business License Application and an additional $5 for each sales tax endorsement. Think of it as a small investment in setting your business on the right track.

Federal Tax ID for Washington Sales Tax License

Absolutely, you'll need this. Your Federal Tax ID Number or Employer Identification Number (EIN) is crucial. It's the tax world's way of identifying your business. Ensure you have this number ready when filling out your application. It's an essential part of your business's identity in the tax realm.

Other Washington Registrations to Consider

Depending on the nature of your business, there might be a need to register with other Washington agencies. For instance, the Washington Secretary of State might be on your list if you're setting up a corporation or LLC. Or, you may need to liaise with local city or county offices for specific business licenses or permits. It's like extending your tax compliance circle. Do check each agency's specific requirements to ensure you're covering all bases.

Guide to collecting sales tax in Washington

Is Washington an Origin or Destination Sales Tax State?

Washington operates on a destination-based sales tax system. This means the tax rate you charge is based on your customer's location, whether they're enjoying the urban vibes of Tacoma or the rustic charm of the San Juan Islands.

What Sales are Subject to Sales Tax in Washington?

In the Evergreen State, a wide range of goods and services fall under the sales tax umbrella. Imagine a diverse marketplace where almost every item, from artisanal gifts in Pike Place Market to the latest tech gadgets, attracts sales tax. This includes not just physical goods but also certain services, especially in the realms of construction and home improvements.

Is Software as a Service (SaaS) Taxed in Washington?

SaaS taxation in Washington can be as nuanced as a barista's guide to espresso. Currently, Washington does treat SaaS as a taxable digital product. So, if you're offering SaaS, it's time to sprinkle some sales tax on top of your pricing.

What is Exempt from Washingtonne Sales Tax?

Washington, much like a considerate host, offers exemptions from sales tax for certain items. These tax breaks can be found in everyday essentials like specific grocery items, prescription medications, and some personal services. Additionally, industries such as manufacturing and agriculture enjoy exemptions for certain business-related purchases.

Who is Eligible for Washington Sales Tax Exemptions?

Sales tax exemptions in Washington are available to a variety of entities, much like different coffee roasts catering to varied palates. Nonprofits, agricultural businesses, manufacturers, and certain individuals like the elderly or disabled may qualify for these exemptions.

What To Do If Your Customer is Exempt from Sales Tax in Washington?

When encountering a customer exempt from sales tax, think of it as offering a complimentary service. In such cases, collect a completed exemption certificate from the customer and keep it for your records. This acts as your proof for the tax-free transaction.

What if You Lose a Washington Sales Tax Exemption Certificate?

Losing an exemption certificate can be akin to misplacing your keys - inconvenient but solvable. Should this happen, reach out to your customer for a replacement. Without this certificate, you could be liable for the sales tax, so it’s wise to keep these documents well organized and accessible.
Did you know logo

In Washington, candy is taxable, but if it contains flour, it’s considered food and thus tax-free – sweet, but with a catch.

Steps for Filing a Washington Sales Tax Return

In Washington, filing sales tax returns is akin to keeping up with a regular coffee schedule. Depending on your sales volume, you'll be filing monthly, quarterly, or annually.

Monthly Filing

Businesses with an average monthly tax liability over $100 need to file monthly. Due dates: 25th of the month following the reporting period.

Quarterly Filing

Businesses with less than $100 in average monthly tax liability but more than $28,000 in annual gross sales must file quarterly. Due dates: 25th of the month after the quarter ends.

Annual Filing

Businesses with less than $100 monthly liability and under $28,000 in annual sales file annually. Due date: January 25th of the following year.

What If a Filing Date Falls on a Weekend or Holiday?

If your sales tax due date lands on a weekend or holiday, you get a breather. Washington extends the deadline to the next business day, giving you extra time to get things in order.

How to File a Washington Sales Tax Return

Filing your sales tax return in Washington is straightforward and can be broken down into simple steps.
  1. Prepare Your Sales Data: First, get your sales figures ready. This includes total sales, taxable sales, and the tax collected.
  2. Log Into MyDOR: Use Washington's MyDOR system to file your taxes. If you're new, set up an account first.
  3. Fill Out Your Sales Tax Return: Enter your sales data accurately. It's all about getting the details right.
  4. Submit and Pay: After filling out your return, submit it and make the necessary payment. Even if you haven't collected any sales tax, you still need to file a zero-dollar return.
  5. Keep Records: Maintain records of your filings for at least five years, ensuring you're prepared for any audits or reviews.

Penalties for Late Filing in Washington

Missing a sales tax filing can lead to penalties. In Washington, you're looking at a 9% penalty for delays up to 30 days, 19% for 31-60 days, and 29% for more than 60 days. It's like getting a parking ticket—best avoided by staying on time.

Sales Tax Incentives in Washington

Washington does offer incentives, similar to a café's loyalty program. These include exemptions for certain business activities like manufacturing or agriculture. It's worth exploring these incentives or getting advice from a tax professional to make the most of them.

The Kintsugi White-Glove Promise

Fast Response

Companies love Kintsugi for its fast responses and quick resolution of your most time-sensitive sales tax issues.


Human Experts

Kintsugi’s in-house sales tax experts use over 300,000 business rules to stay up-to-date on regulatory changes.


End-To-End Guarantee

Kintsugi has your back in case of audits and will fully cover all penalties due to filing inaccuracies.


Top 5 Tips for Filing Sales Tax in Washington

Ready to talk to a Washington sales tax expert?

Start for free, or get a personalized demo.

Get StartedRequest Demo
Kintsugi logo

2261 Market Street STE 5931

San Francisco, CA 94114

+1 (415)


OverviewNexus TrackingFiling and RemittanceIntegrationsTaxGPT
About UsAbout UsFAQsPricingPartners


Subscribe for the latests news & updates

© 2023 Kintsugi, Inc. All rights reserved.