State of Idaho Income Tax Idaho State Income Tax
Tax Year 2023

1.1 -

QuickFact: The average family pays $1,325.00 in Idaho income taxes. [1]
Rank: 29th out of 51

Idaho Income Tax Table

Tax Bracket (Single) [2] Tax Bracket (Couple) [3] Marginal Tax Rate
$0+ $0+ 5.800%

Note: Idaho's income tax has a single flat tax rate for all income.

Note: We don't currently have Idaho's income tax brackets for tax year 2024. Until updated 2024 tax rates become available for Idaho, the tax brackets shown above and used in the income tax calculator will be from tax year 2023.

Learn how marginal tax brackets work View an explanation of marginal tax brackets

Idaho Income Tax Calculator

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How to use the Idaho tax estimator How To Use This Calculator
You can use our free Idaho income tax calculator to get a good estimate of what your tax liability will be come April. On the next page, you will be able to add more details like itemized deductions, tax credits, capital gains, and more.
Please remember that the income tax code is very complicated, and while we can provide a good estimate of your Federal and Idaho income taxes, your actual tax liability may be different.

The Idaho Income Tax

Idaho collects a state income tax at a maximum marginal tax rate of %, spread across tax brackets. Unlike the Federal Income Tax, Idaho's state income tax does not provide couples filing jointly with expanded income tax brackets.

Idaho's maximum marginal income tax rate is the 1st highest in the United States, ranking directly below Idaho's %. You can learn more about how the Idaho income tax compares to other states' income taxes by visiting our map of income taxes by state.

Like many other states, Idaho doubles income tax brackets for taxpayers who are filing jointly with a spouse. If you are late paying your Idaho income tax, you may be liable to pay interest of up to 4% per year.

There are 268 days left until Tax Day, on April 16th 2025. The IRS will start accepting eFiled tax returns in January 2020 - you can start your online tax return today for free with TurboTax TurboTax eFiling.

Compare the state income tax rates in Idaho with the income tax rates in

Idaho Tax Deductions

Income tax deductions are expenses that can be deducted from your gross pre-tax income. Using deductions is an excellent way to reduce your Idaho income tax and maximize your refund, so be sure to research deductions that you mey be able to claim on your Federal and Idaho tax returns. For details on specific deductions available in Idaho, see the list of Idaho income tax deductions.

4.1 - Idaho Standard Deduction

What is the ID Standard Deduction for 2024? Unlike many other states, Idaho has no standard deduction. Certain itemized deductions (including property tax, qualified charitable contributions, etc) may be allowed depending on the income level and filing type of the taxpayer. Keep in mind that not all deductions allowed on your federal income tax return are necessarily going to be allowed on your Idaho income tax return.

4.2 - Idaho Personal Exemptions

Idaho has no personal exemption. The Federal Income Tax, however, does allow a personal exemption to be deducted from your gross income if you are responsible for supporting yourself financially.

4.3 - Idaho Dependent Deduction

Unlike most states, Idaho does not have a dependent deduction. You can, however, claim dependent deductions on your Federal Tax Return.

4.4 - Idaho Itemized Deductions

Idaho allows itemized deductions, and you can claim the same itemized deductions on your Idaho tax return as you do on your Federal tax return. You must choose between itemizing your deductions and choosing the Idaho standard deduction, so it's generally only worth itemizing your deductions if your itemized total is more then the Idaho and Federal standard deductions. For more details, visit the list of Idaho itemized deductions.

Idaho Income Tax Forms provides easy access to five of the most commonly used Idaho income tax forms, in downloadable PDF format. For all of the tax forms we provide, visit our Idaho tax forms library or the 's tax forms page.

Free Printable Idaho Income Tax Form 40  Individual Income Tax Return
Form 40 - Individual Income Tax Return
Form 40 is the standard income tax return for Idaho. All full-time residents are required to complete and submit their form 40 by April 15th.
Free Printable Idaho Income Tax Form 40V Tax Payment Voucher
Form 40V - Tax Payment Voucher
Include a completed Form 40V payment voucher with all cash or check tax payments you send to the Idaho tax Commission to ensure you are properly credited with your payment.
Free Printable Idaho Income Tax Form 43 Nonresident Income Tax Return
Form 43 - Nonresident Income Tax Return
All nonresidents or part-year residents who earned income in Idaho during the last tax year must file a Form 43 nonresident income tax return with the Idaho State Tax Commission.
Free Printable Idaho Income Tax Form 51 Estimated Income Tax Payment Voucher
Form 51 - Estimated Income Tax Payment Voucher
If you are self employed and do not have tax withholding deducted from your salary you can file an estimated income tax payment by completing Form 51. Estimated payments, however, are not required under Idaho law. This document includes an estimated tax w
Free Printable Idaho Income Tax Income Tax Instructions Idaho Income Tax Instruction Booklet
Income Tax Instructions - Idaho Income Tax Instruction Booklet
This free booklet includes instructions on how to fill out your Idaho income tax return. Includes instructions on making estimated payments and completing Forms 40, 43, 39R, 39NR, and 44.
Free Printable Idaho Tax Table
Printable Idaho Tax Table & Tax Reference provides a printable Idaho datasheet including an income tax table, a list of Idaho tax deductions, important URLs and addresses, and more. This document is in PDF format.
If you are not a resident of Idaho, have a complicated tax return, or have other specialized circumstances you may need to download additional tax forms from the website. You can find all of Idaho's 2024 income tax forms on the income tax forms page External Link.

How To File Your Idaho Income Tax Return

Once you've filled out your Idaho income tax return, you have several options for filing and paying your income tax. You can mail your return to the at the correct address below, and include your payment by check or money order. You may also electronically file your Idaho tax return through a tax preparer or using online tax software, and pay your taxes instantly using direct debit or a credit card (an additional credit card fee may apply).

Where To Send Your Idaho Tax Return

If you filled out physical tax return forms, mail your completed Idaho income tax return to the Idaho no later then April 15th. Please be sure to send your completed tax forms to the correct address for your filing type.
Tax Return
Idaho State Tax Commission
PO Box 56
Boise, ID 83756-0056

e-Filing: Submit Your Idaho Tax Return Online

You can save time and money by electronically filing your Idaho income tax directly with the . Benefits of e-Filing your Idaho tax return include instant submission, error checking, and faster refund response times. Most tax preparers can electronically file your return for you, or you can do it yourself using free or paid income tax software, like the examples listed below.

Idaho encourages all taxpayers to submit their Form 40 electronically using the Idaho eFile system. Your income tax return will be immediately verified, and your income tax refund will be processed faster.

You can also pay your Idaho taxes online using direct deposit (no fee), a credit or debit card (3% convenience fee) or an e-Check ($5 fee).

To e-file your Idaho and Federal income tax returns, you need a piece of tax software that is certified for eFile by the IRS. While most in-depth tax software charges a fee, there are several free options available through the states, and simple versions are also offered free of charge by most tax software companies.

The two most popular tax software packages are H&R Block At Home, sold by the H&R Block tax preparation company, and TurboTax Federal & State, sold by the Intuit software company. Both companies produce multiple editions for simple to very complex tax returns, so be sure to carefully compare the features offered by each package.

Getting Your Idaho Tax Refund

Your Idaho Income Tax Refund Online

If your state tax witholdings are greater then the amount of income tax you owe the state of Idaho, you will receive an income tax refund check from the government to make up the difference.

It should take one to three weeks for your refund check to be processed after your income tax return is recieved. E-filing your return and filing early can help ensure your refund check gets sent as quickly as possible.

Once you've filed your tax return, all you have to do is wait for your refund to arrive. If you want to check the status of your Idaho tax refund, you can visit the Idaho Income Tax Refund page.


  1. Our state ranking and income tax figures are based on a family of four (married parents with two children) earning the national median household income of $50,000 per year. Deductions and personal exemptions are taken into account, but some state-specific deductions and tax credit programs may not be accounted for.
  2. Before the official 2024 Idaho income tax rates are released, provisional 2024 tax rates are based on Idaho's 2023 income tax brackets.
  3. The 2024 state personal income tax brackets are updated from the Idaho and Tax FoundationExternal Link data.
  4. Idaho tax forms are sourced from the Idaho income tax forms pageExternal Link, and are updated on a yearly basis. Please make sure the Idaho forms you are using are up-to-date.