Does Idaho tax Social Security?
Does not tax Social Security
No. Idaho does not tax Social Security, even when part of it is taxed on your federal return.
What the Idaho State Tax Commission says
We do not paraphrase the rule from memory. This is the state's own wording, copied from the page linked below it:
“While potentially taxable on your federal return, these aren’t taxable in Idaho.”
Federal tax is a separate question
Even though Idaho 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. Withholding for Idaho state tax, if you need it, is arranged with the state, not with Social Security. State rules change with new laws, so check with the Idaho State Tax Commission before you file.
Other states where the answer is “does not tax Social Security”
Check our work
The answer above comes from this page. Follow the link and compare.
- Specific guidance for individuals: seniors and retireesIdaho State Tax Commission. Read on November 12, 2026.