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Idaho Tax Calculator

The Idaho (ID) Tax Calculator is updated for the 2026/27 tax year and provides a clear estimate of your Idaho state income tax, federal tax, and FICA/Medicare withholdings. Idaho uses a progressive state income tax system with brackets ranging from 0% to 5.8%, depending on filing status and income level. The calculator also helps you account for deductions, credits, and local adjustments used by Idaho residents and part-year filers.

Idaho offers numerous tax credits, including grocery, child, dependent, and investment credits. This calculator can help estimate your refund or balance due, taking these adjustments into account.

Quick Access Tools

Quick Idaho Tax Calculator

Enter your income and filing status, then select Calculate. Use advanced tabs to adjust itemized deductions, dependents, retirement contributions, and withholdings. Idaho allows both standard and itemized deductions similar to the federal system.

Input key: F Used in Federal tax calculations S Used in State tax calculations

Quick Tax Calculation Detailed Tax Calculation
Filing Information Quick Inputs Income Details Deductions & Adjustments State Options IRA, Pensions & Annuities Withholdings

Filing Information

Set your filing status, dependants and personal details so the calculator can apply the correct Federal and State rules.

Quick Inputs

Provide a summary of your income and deductions to calculate your Federal and State tax position quickly.

Income Details

Enter the specific types of income that contribute to your Federal Adjusted Gross Income.

For Schedule B

Deductions & Adjustments

Deductions & Adjustments

Include any adjustments to income that reduce your Federal/State Adjusted Gross Income.

State Options

Some states apply local income taxes in addition to State tax. Enter your local rate if it applies.

IRA, Pensions & Annuities

Enter the details for your retirement contributions and income sources, which are used to compute values on **Form 8606**. This includes contributions to traditional IRAs, 529 savings plans, and rollovers, as well as income from rental properties, farms, unemployment, and other sources. Additionally, provide information on any disaster-related distributions or IRA rollovers you’ve made, and enter your capital gain distributions if applicable. These inputs are essential for accurately calculating your total retirement-related income and determining your tax liabilities or benefits, specifically regarding IRA deductions and distributions as outlined in **Form 8606**.

Withholdings

Enter withheld amounts to calculate refund or balance due.

How to Calculate Income Tax in Idaho for 2026/27

  1. Enter your gross annual income and any adjustments or deductions.
  2. Select your filing status (Single, Married Filing Jointly, Head of Household, etc.).
  3. Click Calculate to view your estimated Idaho and federal taxes, credits, and take-home pay.

Advanced Options

  • Compare standard vs. itemized deductions to determine the most beneficial choice.
  • Include Idaho-specific tax credits like grocery, investment, or dependent credits.
  • Enter IRA and 401(k) contributions to adjust taxable income.
  • Estimate federal and state withholdings to forecast refund or balance due.

Related Calculators

Additional Resources

Frequently Asked Questions

Quick answers for Idaho filers on income tax brackets, grocery credit, deductions, and part-year residency filing rules.

Are commissions treated differently?

No—ordinary income; withholding varies by payroll method.

Any Idaho “millionaire” or surcharge tax?

Not typical; see the state rate table for current top rate/structure.

Traditional vs Roth IRA this year?

See Roth vs Traditional and individual IRA tools.

Monthly table vs my actual checks?

We show an even 1/12 split; day-based cycles yield small month-to-month differences.

Military pay in Idaho—special rules?

States often give exclusions/adjustments—check Idaho’s military provisions in the state section.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.