Washington State Sales Tax for self-employed individuals selling taxable goods or services. Covers the 6.5% state rate, local tax add-ons, destination-based sourcing, use tax, and the Combined Excise Tax Return. Primary source: RCW 82.08 (sales tax), RCW 82.12 (use tax).
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Quick reference
| Field | Value | |---|---| | Jurisdiction | Washington, United States | | Jurisdiction code | US-WA | | Tax type | Sales and Use Tax + Business and Occupation (B&O) Tax (separate) | | State sales tax rate | 6.5% | | Local add-on range | 0.5% -- 4.0% | | Maximum combined rate | ~10.25% (parts of Seattle and Tacoma) | | Sourcing | Destination-based for ALL sales (SST rules) | | Economic nexus | $100,000 in gross receipts (revenue only) | | Primary legislation | RCW Chapter 82.08 (Sales); 82.12 (Use); 82.04 (B&O) | | Tax authority | Washington State Department of Revenue (DOR) | | Filing portal | https://dor.wa.gov | | SST member | Yes -- full member | | Return form | Combined Excise Tax Return (covers sales tax + B&O + use tax) | | Vendor discount | None | | No state income tax | Correct -- B&O tax is primary business tax | | Federal framework skill | us-sales-tax | | Skill version | 2.0 |
Required inputs
| # | Question | Why it matters | |---|----------|----------------| | 1 | Washington UBI number? | Required for filing | | 2 | Assigned filing frequency? | Monthly, quarterly, annual | | 3 | Nexus type? | $100K gross receipts threshold | | 4 | Sell through marketplace facilitators? | Facilitators collect on facilitated sales | | 5 | Sell digital products, SaaS, or streaming? | WA taxes virtually ALL digital products | | 6 | Sell custom software? | WA taxes custom software delivered electronically | | 7 | Understand B&O tax obligations? | B&O applies IN ADDITION to sales tax | | 8 | Primary delivery/sales location? | WA is destination-based; hundreds of local rates |
R-WA-1
B&O tax detailed compliance. B&O tax has its own classifications and rates. Outside scope for detailed B&O filing.R-WA-1
R-WA-2
Cannabis taxation. 37% excise tax plus sales tax. Complex regime. Escalate.R-WA-2
R-WA-3
Capital gains tax. Enacted 2021. Outside scope.
Quick reference
| Field | Value |
|---|---|
| Jurisdiction | Washington, United States |
| Jurisdiction code | US-WA |
| Tax type | Sales and Use Tax + Business and Occupation (B&O) Tax (separate) |
| State sales tax rate | 6.5% |
| Local add-on range | 0.5% -- 4.0% |
| Maximum combined rate | ~10.25% (parts of Seattle and Tacoma) |
| Sourcing | Destination-based for ALL sales (SST rules) |
| Economic nexus | $100,000 in gross receipts (revenue only) |
| Primary legislation | RCW Chapter 82.08 (Sales); 82.12 (Use); 82.04 (B&O) |
| Tax authority | Washington State Department of Revenue (DOR) |
| Filing portal | https://dor.wa.gov |
| SST member | Yes -- full member |
| Return form | Combined Excise Tax Return (covers sales tax + B&O + use tax) |
| Vendor discount | None |
| No state income tax | Correct -- B&O tax is primary business tax |
| Federal framework skill | us-sales-tax |
| Skill version | 2.0 |
CRITICAL: Washington taxes virtually ALL digital products, including SaaS, streaming, and custom software delivered electronically. Broadest digital tax regime in the US.
Required inputs
| # | Question | Why it matters |
|---|---|---|
| 1 | Washington UBI number? | Required for filing |
| 2 | Assigned filing frequency? | Monthly, quarterly, annual |
| 3 | Nexus type? | $100K gross receipts threshold |
| 4 | Sell through marketplace facilitators? | Facilitators collect on facilitated sales |
| 5 | Sell digital products, SaaS, or streaming? | WA taxes virtually ALL digital products |
| 6 | Sell custom software? | WA taxes custom software delivered electronically |
| 7 | Understand B&O tax obligations? | B&O applies IN ADDITION to sales tax |
| 8 | Primary delivery/sales location? | WA is destination-based; hundreds of local rates |
Tangible personal property (RCW 82.08.020)
| Pattern | Taxable? | Notes |
|---|---|---|
| General TPP | TAXABLE | RCW 82.08.020 |
| Clothing and footwear | TAXABLE | NO clothing exemption |
| Motor vehicles | TAXABLE | Plus separate excise taxes |
Food and beverages (RCW 82.08.0293)
| Pattern | Taxable? | Citation |
|---|---|---|
| Grocery food (unprepared, home consumption) | EXEMPT | RCW 82.08.0293 |
| Prepared food (heated, with utensils, mixed ingredients) | TAXABLE | RCW 82.08.0293(2) |
| Candy (SST definition: no flour) | TAXABLE | RCW 82.08.0293(2)(d) |
| Soft drinks | TAXABLE | RCW 82.08.0293(2)(e) |
| Dietary supplements | TAXABLE | RCW 82.08.0293(2)(f) |
| Bottled water (plain, non-carbonated) | EXEMPT | |
| Alcoholic beverages | TAXABLE | Plus liquor taxes |
SaaS and digital goods (RCW 82.04.050(6))
| Pattern | Taxable? | Notes |
|---|---|---|
| Canned software (any delivery) | TAXABLE | RCW 82.04.050(6)(a) |
| Custom software (electronic delivery) | TAXABLE | Unlike most states -- WA taxes this |
| SaaS (cloud-hosted) | TAXABLE | Digital automated service; RCW 82.04.050(6)(b) |
| Digital music/movies/books | TAXABLE | Digital goods |
| Streaming services | TAXABLE | Digital automated service |
| Digital codes | TAXABLE | RCW 82.04.050(6)(c) |
| Remote access software | TAXABLE | Digital automated service |
Services (RCW 82.04.050)
| Pattern | Taxable? | Notes |
|---|---|---|
| Digital automated services | TAXABLE | RCW 82.04.050(6)(b) |
| Extended warranties/service contracts | TAXABLE | RCW 82.04.050(7) |
| Physical fitness services | TAXABLE | RCW 82.04.050(2)(a) |
| Amusement/recreation | TAXABLE | |
| Professional services (legal, accounting, consulting, medical) | NOT TAXABLE (sales tax) | Subject to B&O tax only |
| Landscape maintenance | NOT TAXABLE (sales tax) | B&O only |
Exemptions (RCW 82.08.0293)
| Pattern | Status | Citation |
|---|---|---|
| Grocery food | EXEMPT | RCW 82.08.0293 |
| Prescription drugs | EXEMPT | RCW 82.08.0281 |
| OTC drugs | TAXABLE | No OTC exemption |
| Agricultural machinery | EXEMPT | RCW 82.08.0268 |
| Manufacturing M&E | PARTIAL EXEMPTION | RCW 82.08.02565 -- local tax exempt, state may apply |
| Resale (WA Resale Certificate) | EXEMPT | RCW 82.08.030(1) |
| Interstate commerce | EXEMPT | RCW 82.08.0273 |
| Government purchases | EXEMPT | RCW 82.08.0255 |
| Trade-in value | EXEMPT | RCW 82.08.010(1)(c) |
| Newspapers (print) | EXEMPT | RCW 82.08.0253 |
Key combined rates
| Jurisdiction | Combined rate |
|---|---|
| Seattle | ~10.25% |
| Tacoma | ~10.20% |
| Spokane | ~8.90% |
| Vancouver (Clark County) | ~8.60% |
| Olympia | ~9.00% |
| Unincorporated King County | ~10.10% |
Sourcing
| Scenario | Rate applied |
|---|---|
| All sales (shipped, counter, intrastate, interstate) | Destination-based |
Use DOR rate lookup: https://dor.wa.gov/taxes-rates/sales-use-tax-rates
B&O rates (context only)
| Classification | Rate |
|---|---|
| Retailing | 0.471% |
| Wholesaling | 0.484% |
| Manufacturing | 0.484% |
| Service | 1.5% if prior-year taxable income < $1M; 1.75% if $1M–$4,999,999.99; 2.1% if $5M+ |
Forms
| Form | Use |
|---|---|
| Combined Excise Tax Return | Covers sales tax, B&O, use tax, other excise taxes |
Filed through My DOR (online portal).
Due dates
| Frequency | Due date |
|---|---|
| Monthly | 25th of following month |
| Quarterly | April 25, July 25, October 25, January 25 |
| Annual | April 15 |
Economic nexus (RCW 82.08.020; RCW 82.04.067)
| Parameter | Value |
|---|---|
| Revenue threshold | $100,000 in gross receipts |
| Transaction threshold | None |
| Measurement period | Current or preceding calendar year |
| Effective date | October 1, 2018 |
| Sales included | Gross receipts including exempt sales |
| Authority | RCW 82.08.020; RCW 82.04.067 |
Marketplace facilitator (RCW 82.08.0531)
| Rule | Detail |
|---|---|
| Effective date | January 1, 2018 (pre-Wayfair, one of earliest) |
| Authority | RCW 82.08.0531 |
Penalties
| Penalty | Rate |
|---|---|
| Late filing | 5%/month (max 25%) |
| Substantial underpayment | 5% |
| Evasion/fraud | 50% |
Statute of limitations
| Scenario | Period |
|---|---|
| Standard | 4 years |
| No return | Unlimited |
| Fraud | Unlimited |
Situation: $1,000 sale in Seattle. Resolution: Collect ~$102.50 sales tax from customer. ALSO pay B&O ($1,000 x 0.471% = $4.71). B&O is retailer's own obligation.
Situation: WA business subscribes to cloud HR platform. $100/month. Resolution: TAXABLE. Sales tax at combined rate.
Situation: Business pays $20,000 for custom software, delivered electronically. Resolution: TAXABLE in WA (unlike most states). RCW 82.04.050(6)(a).
Situation: Seattle retailer ships to Spokane customer. Resolution: Charge Spokane rate (~8.90%), not Seattle rate (~10.25%).
Situation: Retailer asks about collection allowance. Resolution: Washington does NOT offer a vendor discount. Sellers retain no portion.
Input: $1,000 laptop. Rate: 10.25%. Expected: Tax = $102.50.
Input: $200 groceries. Expected: Tax = $0.
Input: $300/month cloud HR. Spokane rate: 8.90%. Expected: Tax = $26.70/month.
Input: Oregon seller, $120K WA sales. Expected: Exceeds $100K. Must register.
Input: Seattle retailer ships $500 to Vancouver, WA. Rate: 8.60%. Expected: Tax = $43.00.
Input: $5 chocolate bar (no flour) in Tacoma. Rate: 10.20%. Expected: Tax = $0.51.
Input: $300 jacket in Seattle. Rate: 10.25%. Expected: Tax = $30.75.
Input: $50 warranty in Seattle. Rate: 10.25%. Expected: Tax = $5.13.
Input: Seattle business buys $3,000 from Oregon retailer. No tax collected. Rate: 10.25%. Expected: Use tax = $307.50.
Input: $20,000 custom software delivered electronically. Seattle. Expected: Tax = $2,050.
This skill is provided for informational and computational purposes only and does not constitute tax, legal, or financial advice. All outputs must be reviewed by a qualified professional (CPA, EA, or tax attorney) before filing.
This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a CPA, EA, tax attorney, or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.
The most up-to-date, verified version of this skill is maintained at openaccountants.com. Log in to access the latest version, request a professional review from a licensed accountant, and track updates as tax law changes.
Other Washington computations in the OpenAccountants Tax Library.
Tangible personal property
| Pattern | Taxable? | Notes | |---|---|---| | General TPP | TAXABLE | RCW 82.08.020 | | Clothing and footwear | TAXABLE | NO clothing exemption | | Motor vehicles | TAXABLE | Plus separate excise taxes |RCW 82.08.020
Food and beverages
| Pattern | Taxable? | Citation | |---|---|---| | Grocery food (unprepared, home consumption) | EXEMPT | RCW 82.08.0293 | | Prepared food (heated, with utensils, mixed ingredients) | TAXABLE | RCW 82.08.0293(2) | | Candy (SST definition: no flour) | TAXABLE | RCW 82.08.0293(2)(d) | | Soft drinks | TAXABLE | RCW 82.08.0293(2)(e) | | Dietary supplements | TAXABLE | RCW 82.08.0293(2)(f) | | Bottled water (plain, non-carbonated) | EXEMPT | | | Alcoholic beverages | TAXABLE | Plus liquor taxes |RCW 82.08.0293
SaaS and digital goods
| Pattern | Taxable? | Notes | |---|---|---| | Canned software (any delivery) | TAXABLE | RCW 82.04.050(6)(a) | | Custom software (electronic delivery) | TAXABLE | Unlike most states -- WA taxes this | | SaaS (cloud-hosted) | TAXABLE | Digital automated service; RCW 82.04.050(6)(b) | | Digital music/movies/books | TAXABLE | Digital goods | | Streaming services | TAXABLE | Digital automated service | | Digital codes | TAXABLE | RCW 82.04.050(6)(c) | | Remote access software | TAXABLE | Digital automated service |RCW 82.04.050(6)
Services
| Pattern | Taxable? | Notes | |---|---|---| | Digital automated services | TAXABLE | RCW 82.04.050(6)(b) | | Extended warranties/service contracts | TAXABLE | RCW 82.04.050(7) | | Physical fitness services | TAXABLE | RCW 82.04.050(2)(a) | | Amusement/recreation | TAXABLE | | | Professional services (legal, accounting, consulting, medical) | NOT TAXABLE (sales tax) | Subject to B&O tax only | | Landscape maintenance | NOT TAXABLE (sales tax) | B&O only |RCW 82.04.050
Exemptions
| Pattern | Status | Citation | |---|---|---| | Grocery food | EXEMPT | RCW 82.08.0293 | | Prescription drugs | EXEMPT | RCW 82.08.0281 | | OTC drugs | TAXABLE | No OTC exemption | | Agricultural machinery | EXEMPT | RCW 82.08.0268 | | Manufacturing M&E | PARTIAL EXEMPTION | RCW 82.08.02565 -- local tax exempt, state may apply | | Resale (WA Resale Certificate) | EXEMPT | RCW 82.08.030(1) | | Interstate commerce | EXEMPT | RCW 82.08.0273 | | Government purchases | EXEMPT | RCW 82.08.0255 | | Trade-in value | EXEMPT | RCW 82.08.010(1)(c) | | Newspapers (print) | EXEMPT | RCW 82.08.0253 |RCW 82.08.0293
Key combined rates
| Jurisdiction | Combined rate | |---|---| | Seattle | ~10.25% | | Tacoma | ~10.20% | | Spokane | ~8.90% | | Vancouver (Clark County) | ~8.60% | | Olympia | ~9.00% | | Unincorporated King County | ~10.10% |
Sourcing
| Scenario | Rate applied | |---|---| | All sales (shipped, counter, intrastate, interstate) | Destination-based |
General rule
All retail sales of TPP and enumerated services taxable unless exempted. Digital products taxed very broadly.RCW 82.08.020
B&O tax dual obligation
A retail business owes BOTH sales tax (from customer) AND B&O tax (on gross receipts). B&O cannot be passed to customer as a separate line item.
B&O rates (context only)
| Classification | Rate | |---|---| | Retailing | 0.471% | | Wholesaling | 0.484% | | Manufacturing | 0.484% | | Service | 1.5% if prior-year taxable income < $1M; 1.75% if $1M–$4,999,999.99; 2.1% if $5M+ |
Forms
| Form | Use | |---|---| | Combined Excise Tax Return | Covers sales tax, B&O, use tax, other excise taxes |
Due dates
| Frequency | Due date | |---|---| | Monthly | 25th of following month | | Quarterly | April 25, July 25, October 25, January 25 | | Annual | April 15 |
Economic nexus
| Parameter | Value | |---|---| | Revenue threshold | $100,000 in gross receipts | | Transaction threshold | None | | Measurement period | Current or preceding calendar year | | Effective date | October 1, 2018 | | Sales included | Gross receipts including exempt sales | | Authority | RCW 82.08.020; RCW 82.04.067 |RCW 82.08.020; RCW 82.04.067
Marketplace facilitator
| Rule | Detail | |---|---| | Effective date | January 1, 2018 (pre-Wayfair, one of earliest) | | Authority | RCW 82.08.0531 |RCW 82.08.0531
Penalties
| Penalty | Rate | |---|---| | Late filing | 5%/month (max 25%) | | Substantial underpayment | 5% | | Evasion/fraud | 50% |
Record retention
5 years from filing or due date.
Statute of limitations
| Scenario | Period | |---|---| | Standard | 4 years | | No return | Unlimited | | Fraud | Unlimited |
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