Does Washington tax Social Security?
No state income tax
No. Washington has no individual income tax today. A new 9.9% tax on adjusted gross income over $1 million starts January 1, 2028.
What the Washington Department of Revenue says
We do not paraphrase the rule from memory. This is the state's own wording, copied from the page linked below it:
“Washington does not currently have an individual income tax.”
“Beginning Jan. 1, 2028, a new 9.9% income tax will apply to individuals and married couples filing jointly with annual adjusted gross income exceeding $1 million.”
Federal tax is a separate question
Even though Washington does not tax it, the IRS can still tax part of your Social Security on your federal return. Whether it does depends on your other income. Our taxable Social Security calculator follows the IRS worksheet line by line, and this guide explains the rule.
You can ask Social Security to withhold federal tax from each payment. State rules change with new laws, so check with the Washington Department of Revenue before you file.
Other states where the answer is “no state income tax”
Check our work
The answer above comes from this page. Follow the link and compare.
- Income taxWashington Department of Revenue. Read on November 12, 2026.