How to use the Idaho Paycheck Calculator
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Idaho income tax brackets 2026
Idaho has a flat 5.3% tax on income over $4,811. Idaho taxes income above the first $4,811 ($9,622 married) at a flat 5.3%.
| Taxable income | Rate |
|---|---|
| $0 – $4,811 | 0% |
| Over $4,811 | 5.3% |
| Taxable income | Rate |
|---|---|
| $0 – $9,622 | 0% |
| Over $9,622 | 5.3% |
Standard deduction: $16,100 single, $32,200 married.
Sources: Tax Foundation, State Individual Income Tax Rates and Brackets, 2026; IRS Rev. Proc. 2025-32; Idaho revenue and labor department rates for 2026. Federal: 2026 brackets, $184,500 Social Security wage base. See paycheck calculators for every state.
Formula
Frequently asked questions
How much is Idaho state income tax in 2026?
Idaho has a flat 5.3% tax on income over $4,811 for 2026. Idaho taxes income above the first $4,811 ($9,622 married) at a flat 5.3%.
What taxes come out of a Idaho paycheck?
Federal income tax, Social Security (6.2% of wages up to $184,500 in 2026) and Medicare (1.45%, plus 0.9% on wages over $200,000), Idaho income tax. Pre-tax 401(k) and health insurance deductions lower your taxable pay.
Is this Idaho paycheck calculator up to date?
Yes. It uses the 2026 federal tax brackets and standard deduction, the 2026 Social Security wage base, and the latest published Idaho tax rules. We last reviewed the Idaho numbers on 20 Oct 2026.
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Results are estimates for information only and are not financial, tax or legal advice. Tax rules, interest rates and fees change, so confirm important numbers with your bank, employer or a qualified adviser. Read our disclaimer.