How to Calculate Sales Tax in Sedro-Woolley, Washington
2026 guide to combined rates, purchase math, exemptions, filing steps, and official state resources.
Sales tax math for Sedro-Woolley
Use the current combined rate, confirm taxable item treatment, and verify permit and filing duties with the state before charging customers or filing returns.
Current combined rate
8.800%
ZIP codes in page bundle
0
Calculation flow
Price, tax, total
Rate Components
State, county, city, and special district sales tax breakdown
| Component | Rate |
|---|---|
| Washington State Sales Tax | 6.500% |
| Special District Tax | 2.300% |
| Combined Sales Tax Rate | 8.800% |
Steps
Step 1
Find the combined rate
Use the current 8.800% combined rate for Sedro-Woolley.
Step 2
Convert it to a decimal
8.800% becomes 0.0880.
Step 3
Multiply by the purchase amount
This gives the sales tax due for that transaction.
Step 4
Add the tax back to the price
The result is the final total the buyer pays.
Purchase examples
| Purchase | Tax | Total |
|---|---|---|
| $25.00 | $2.20 | $27.20 |
| $50.00 | $4.40 | $54.40 |
| $100.00 | $8.80 | $108.80 |
| $250.00 | $22.00 | $272.00 |
| $500.00 | $44.00 | $544.00 |
| $1,000.00 | $88.00 | $1,088.00 |
Taxable items and exemptions
Check grocery, resale, nonprofit, manufacturing, prescription, digital goods, and other category-specific rules before using the combined rate for a transaction.
Permit and filing steps
Register, collect, file, and remit through the state department of revenue. Businesses should confirm filing frequency, account status, and due dates before a return is submitted.
Frequently asked questions