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Retire in Idaho: 2026 Tax & Cost of Living Guide

Flat 5.8% income tax, no Social Security or estate tax, very low property tax. Moderate tax-friendliness for retirees.

State income tax

Flat 5.80%

Social Security

Not taxed

Estate tax

None

Property tax

0.47%

How Idaho Taxes Retirement Income

Social Security
Not taxed
Public pensions (state/federal)
Taxed
Private pensions
Taxed
401(k) / IRA withdrawals
Taxed

Exemption / exclusion

Limited exclusions for some public pensions (age 65+ or disabled)

What Would You Pay in State Income Tax?

Rough estimates at the top marginal rate (actual effective rate will be lower for most retirees due to brackets, exemptions, and standard deduction):

Annual Retirement IncomeEstimated State TaxEffective Rate
$50,000$2,9005.8%
$100,000$5,8005.8%
$200,000$11,6005.8%

Capital Gains in Idaho

60% deduction for long-term capital gains on qualifying Idaho property

Top Cities for Retirees in Idaho

Boise

$2,170/month estimated cost of living

States With No Income Tax

Alaska

Florida

Nevada

New Hampshire

South Dakota

Tennessee

Compare Against Other States

All 50 US States + DC

Ranked by tax-friendliness for retirees. Grouped by income-tax type.

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Retirement Methodology Calculators

How much do the big names actually say you need? See each guru's assumed return and withdrawal rate, side by side with academic defaults.

Dave Ramsey

12% / 8%

Bill Bengen

4% rule

Bogleheads

7% / 4%

FIRE Calculator

See how much you need to retire — in Idaho or anywhere else.

Safe Withdrawal Rate

Model your retirement paycheck with real historical data.

Tax rates and programs are subject to change. Data is current for 2024–2025. Always consult a qualified tax professional before making relocation decisions.