Does Idaho Tax Retirement Income?

No. Idaho does not tax Social Security benefits.

The federally taxable portion of Social Security benefits is subtracted on the Idaho return, so Social Security is not taxed.

The Idaho answer is separate from the federal one. Depending on combined income, up to 85% of Social Security benefits can be taxable on the federal return regardless of what Idaho does, so the state rule changes the state line only. Our guide to states that do not tax Social Security shows where Idaho sits among the states that still tax benefits.

Partly. Idaho taxes some pension income, subject to an exclusion or age rule.

Private pension income is fully taxable. The retirement benefits deduction covers only Civil Service Retirement System and Foreign Service annuities where eligibility was established before 1984, the Idaho Firefighters Retirement Fund, certain Idaho city police pensions outside Social Security, and military retirement pay.

For a qualifying pension, the deduction is capped at the maximum Social Security benefit for the year: $48,216 for a single filer and $72,324 on a joint return for 2025, with 2026 amounts to be published by the Tax Commission. The cap is reduced by every dollar of Social Security or railroad retirement benefits the taxpayer or spouse received. The recipient must be 65, or 62 and disabled, and married couples must file jointly to claim it.

Public and private pensions, annuities, and retirement-plan distributions do not always get the same treatment. The pension comparison lists which states exempt pensions broadly, partly, or only for certain plans.

Yes. Idaho generally taxes traditional 401(k) and IRA withdrawals.

Traditional 401(k) and IRA withdrawals included in federal adjusted gross income are taxable at 5.3%. Idaho has no age-based subtraction for them.

Two timing points matter in Idaho. A Roth conversion is taxable in the year it is done, and Idaho starts from federal adjusted gross income, so a large conversion can land in a year when the state exclusion does not cover it. Qualified Roth withdrawals later are generally not taxable at either level. Required minimum distributions follow the same Idaho rules as any other traditional-account withdrawal.

Every state page on this site runs the same retiree profile so the states can be compared: $30,000 of Social Security, $40,000 withdrawn from a traditional 401(k), and a $20,000 private pension, $90,000 in total.

A 68-year-old with $30,000 of Social Security, $40,000 from a 401(k), and a $20,000 private pension subtracts the Social Security but gets no retirement benefits deduction because a private pension does not qualify. After the standard deduction, roughly $42,000 is taxed at 5.3%, about $2,200 of Idaho tax.

Step one, subtract the taxable Social Security, which removes the full $30,000 from Idaho income. Step two, the $60,000 of 401(k) and private pension income stays in, because neither source is on the list for the retirement benefits deduction. Step three, subtract the federal standard deduction Idaho uses, $16,100 for a single filer plus $2,050 for age 65 in 2026, leaving about $41,850. Step four, 5.3% of that is roughly $2,200 before the grocery credit. Contrast a $150,000 lump-sum IRA withdrawal in the same year: the flat rate means no bracket jump, but every dollar is taxed, so Idaho tax rises by about $7,950 to roughly $10,200. If instead the $20,000 pension were a qualifying CSRS annuity, the deduction cap of $48,216 minus $30,000 of Social Security would shelter $18,216 of it and cut the base-case tax by roughly $970.

The same $90,000 profile looks different a state line away. The rows below come from the reviewed 51-state table; each state name links to its own guide.

• Utah: treats Social Security as partially taxed, pensions as taxed, and 401(k) and IRA withdrawals as taxed, with a top rate of 4.45% and income-tested retirement and Social Security credits.
• Washington: has no individual income tax at all.
• Montana: treats Social Security as partially taxed, pensions as partially taxed, and 401(k) and IRA withdrawals as partially taxed, with a top rate of 5.65% and up to $5,500 qualified retirement subtraction.

The phrase Idaho retirement benefits deduction makes people think Idaho shelters retirement income broadly. It does not. It is a narrow deduction for a short list of public and military pensions, it requires age 65, and it is reduced dollar for dollar by Social Security, so many eligible retirees get little or nothing.

Military retirement: Military retirement pay qualifies for the retirement benefits deduction, but only once the retiree is 65, or 62 and disabled, and the deduction is reduced by any Social Security received. A 60-year-old military retiree generally pays Idaho tax on the full pension. See the military retirement tax map for every state's treatment.

Estate and inheritance tax: Idaho has no estate or inheritance tax.

Selling a home or investments in Idaho: retirement-income rules do not cover capital gains. See Idaho capital gains tax before selling appreciated property or a brokerage position in the year you move or retire.

• Confirm the exclusion you are claiming. For a qualifying pension, the deduction is capped at the maximum Social Security benefit for the year: $48,216 for a single filer and $72,324 on a joint return for 2025, with 2026 amounts to be published by the Tax Commission. The cap is reduced by every dollar of Social Security or railroad retirement benefits the taxpayer or spouse received. The recipient must be 65, or 62 and disabled, and married couples must file jointly to claim it.
• Part-year residents. If you moved into or out of Idaho during the year, retirement income is generally allocated to the period of residency, and the former state may still tax distributions received before the move. Document the move date, the new domicile, and where each distribution was received.
• Withholding and estimates. Pension and IRA custodians often withhold federal tax but not Idaho tax. If Idaho taxes any part of your retirement income, check whether quarterly estimated payments are needed to avoid an underpayment penalty.
• Federal side. The federal return has its own rules: up to 85% of Social Security can be taxable, the temporary $6,000 federal senior deduction is available for 2025 through 2028 subject to income limits, and Roth conversions are taxed in the conversion year. State exemptions do not change any of that.
• Large one-time distributions. If one spouse has a qualifying CSRS or military pension, remember the cap is cut by both spouses' Social Security. Delaying one spouse's Social Security claim preserves more of the Idaho deduction in the years the pension is largest, which is a state-level reason to run the claiming analysis.

Comparing states before a move? Use the retirement taxes by state table and the moving states tax guide, and read retirement tax planning for how distributions, conversions, and a move are sequenced together.