ZIP 98102 sales tax rate: 10.45%
Components estimatedSeattle, WA — King County
Quick answer
Purchases delivered to ZIP 98102 are taxed at 10.45%, the combined Washington state, county, city and district rate for Seattle as of January 1, 2026. A $100 taxable purchase costs $110.45 — $10.45 of tax. Washington allows local add-ons, so a neighbouring ZIP can differ.
Calculate tax for 98102
Pre-loaded with the 10.45% rate for 98102.
Sales tax calculator
The full combined rate of 10.45% applies to general merchandise.
Enter a pre-tax amount to see the tax due in ZIP 98102 — Seattle, WA.
- Pre-tax
- $100
- Sales tax at 10.45%
- $10.45
- Total
- $110.45
Tax is rounded to the nearest cent on the full transaction, which is how most registers compute it. Line-item rounding can differ by a cent or two on long receipts.
Reverse out sales tax
Split a receipt total into item price and the 10.45% tax collected.
Backing out 10.45% for ZIP 98102.
- Item price before tax
- $100
- Sales tax collected
- $10.45
How the 10.45% breaks down
Every jurisdiction that takes a share of this rate.
| Jurisdiction | Level | Rate | Share of total |
|---|---|---|---|
| Washington state | state | 6.5% | 62% |
| King County | county | 1.4% | 13% |
| City of Seattle | city | 1.15% | 11% |
| Sound Transit and transportation benefit district | special district | 1.4% | 13% |
| Combined rate | 10.45% |
Tax table for 98102
Common purchase amounts at this rate.
| Purchase | Sales tax | Total |
|---|---|---|
| $10 | $1.05 | $11.05 |
| $25 | $2.61 | $27.61 |
| $50 | $5.23 | $55.23 |
| $100 | $10.45 | $110.45 |
| $500 | $52.25 | $552.25 |
| $1,000 | $104.50 | $1104.50 |
| $5,000 | $522.50 | $5522.50 |
| $25,000 | $2612.50 | $27612.50 |
About ZIP 98102
ZIP boundaries are postal routes, not tax boundaries.
Washington has no income tax and leans hard on sales tax; Seattle's Sound Transit component funds light rail expansion through 2046. For destination-based sourcing, Washington sellers should confirm the rate by full street address rather than ZIP alone — a single ZIP can cross a city limit or a transit-district boundary, and the rate follows the boundary, not the mail route.
Other ZIP codes in Seattle
All carry the 10.45% Seattle rate.
Compare with nearby ZIP codes
Nearest covered ZIP codes in other metros.
Go deeper
Download this metro's data
The Seattle jurisdiction stack, combined rate (10.45%), effective date and Census figures are published as open files. Free to use with attribution — no key, no signup.