Quick Highlights on Washington Sales Tax
| Detail | Value |
|---|---|
| State Sales Tax Rate Range | 6.5–10.6% |
| Base State Sales Tax Rate | 6.5% |
| Local Rate Range | 0–4.1% |
| Economic Nexus Sales Threshold | $100,000 |
| Reference Period | Current or Previous Calendar Year |
| Registration Deadline | Next transaction after threshold is crossed |
| Revenue Authority | Washington State Department of Revenue |
| Online Filing Portal | My DOR |
As a business, do I need to collect sales tax in Washington?
Businesses are required to collect sales tax in Washington if they have a sales tax nexus in the state. This includes having a physical presence or reaching a specific sales level, which establishes an economic nexus. This is why understanding Washington state sales tax obligations is crucial for compliance.
Do I have a physical nexus in Washington?
A physical nexus in the state of Washington is established if your business has a physical presence in the state, like an office, warehouse, or store. Even temporary physical presence, like participating in trade shows or craft fairs, can create a nexus.
In Washington, physical nexus is triggered by employees or contractors in any role — including back-office, administrative, and support functions, not just customer-facing roles.
How do I know if I have an economic nexus in Washington?
An economic nexus in Washington is determined by your sales volume. If your enterprise meets the threshold, you must register for a Washington sales tax permit, collect tax on sales shipped to Washington, and remit that tax to Washington State Department of Revenue.
In Washington, economic nexus is established if your sales in the state exceed $100,000, based on Current or Previous Calendar Year.
Marketplace sales (e.g., Amazon, eBay) are included when calculating whether you've exceeded the Washington economic nexus threshold.
Sales made for resale are included in the nexus threshold calculation for Washington.
Non-taxable sales are included in the nexus threshold calculation for Washington.
Once you cross the threshold, you must register by Next transaction after threshold is crossed.
Which goods are taxable in Washington?
In Washington, sales tax applies to:
- Retail sales of tangible personal property
- Prewritten and custom computer software (expanded October 2025)
- SaaS, cloud computing, and digital products
- IT services and certain digital services (expanded October 2025)
- Prepared food and beverages
- Lodging and hotel accommodations
- Construction and repair services
Washington has one of the broadest sales tax bases in the country, taxing most goods, many services, and all digital products.
What items are exempt from sales tax in Washington?
Washington exempts the following from sales tax:
- Food and food ingredients for home consumption (unprepared groceries)
- Prescription drugs and medical devices
- Agricultural inputs (feed, seed, fertilizer)
- Manufacturing machinery and equipment
- Motor fuel subject to the motor fuel tax
- Sales to government entities and qualifying nonprofits
Washington does NOT exempt clothing from sales tax.
Is SaaS taxable in Washington?
SaaS is fully taxable in Washington. All cloud software subscriptions delivered to customers in Washington are subject to sales tax.
How can a business get a sales tax permit in Washington?
To obtain a sales tax permit in Washington, businesses need to register with the Washington State Department of Revenue. Registration can be completed online through the My DOR.
You will need to provide detailed information about your business, including business type, ownership details, and the nature of your business activities.
When should a business file sales tax in Washington?
Sales tax returns in Washington are generally due on the 25th day of the following month for the previous period. Based on your annual tax liability, you may qualify for a less frequent filing schedule:
- Quarterly filing: Available if your annual tax liability is below $4,800 (returns due Last day of the month following the end of the quarter)
- Annual filing: Available if your annual tax liability is below $1,200 (returns due April 15th of the following year)
Note: Also requires B&O tax registration at nexus threshold. Effective Oct 2025, progressive B&O rates: 1.5% (<$1M), 1.75% ($1M–$5M), 2.1% (>$5M). No state income tax.
You can file your Washington sales tax return through the My DOR at https://dor.wa.gov/open-file/my-dor.
Does Washington offer a timely filing discount?
Washington does not offer a timely filing discount or vendor compensation credit.
What are the penalties for late filing in Washington?
Washington imposes the following penalties for non-compliance:
- Late filing penalty: 5% of the tax due per month (or part of a month), up to a maximum of 25%
- Late payment penalty: 9% of the tax due within one month, increasing thereafter
- Interest: Accrues on unpaid tax from the due date at the statutory rate
- Assessment penalty: 5% of the assessed tax for deficiency assessments
Penalties may be waived for first-time violations or reasonable cause.
Is shipping taxable in Washington?
In Washington, the taxability of shipping and handling depends on how the charge is presented. Generally: • Taxable: If the shipping charges are mandatory or included in the price of a taxable item. • Non-Taxable: If shipping is separately stated on the invoice and provided as an optional service to the customer. Note: If you ship a mix of taxable and non-taxable goods in Washington, the shipping charge must usually be prorated to determine the taxable portion. Confirm current rules with Washington State Department of Revenue at https://dor.wa.gov/.
Does Washington have a Remote Seller program?
Washington requires remote sellers who exceed the economic nexus threshold to register, collect, and remit sales tax using standard state rates.