Idaho

State Income Tax

5.695%

Flat Rate

Exempt

Social Security

2026-04-15

Filing Deadline

Flat

Structure

Full Tax Details

Has Income TaxYes

Tax StructureFlat Rate

Rate5.695%

Single Standard Deduction$14,600

Married Standard Deduction$29,200

Single Personal ExemptionN/A

Married Personal ExemptionN/A

Taxes Social SecurityExempt

Taxes Retirement IncomeYes

Filing Deadline2026-04-15

Retirement Income Details

Social Security is exempt. Some retirement benefits for seniors/disabled are deductible.

Official Payment Portal

Idaho Department of Revenue

Last verified: 2026-03-31 · Always consult a tax professional before making financial decisions.