Idaho — Idaho Individual Income Tax Return
More about the Idaho FORM 40 Tax Return
We last updated Idaho FORM 40 in January 2024 from the Idaho State Tax Commission. This form is for income earned in tax year 2023, with tax returns due in April 2024. We will update this page with a new version of the form for 2025 as soon as it is made available by the Idaho government.
Other Idaho Individual Income Tax Forms:
In addition to information about Idaho's income tax brackets, Tax-Brackets.org provides a total of 66 Idaho income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used Idaho tax forms:
| Form Code | Form Name |
|---|---|
| FORM 24 | Idaho Grocery Credit Refund |
| FORM 40 | Idaho Individual Income Tax Return |
| FORM 51 | Estimated Payment of Idaho Individual Income Tax |
| FORM 3150 (Obsolete) | INSTRUCTIONS – IDAHO IFTA TAX RETURN |
| FORM ID-VP | Income Tax Payment Voucher |
View all 66 Idaho Income Tax Forms
Disclaimer: While we do our best to keep FORM 40 up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!
Tax Form Sources:
- Idaho State Tax Commission ( http://tax.idaho.gov/index.cfm
) - State Tax Commission Income Tax Forms ( https://tax.idaho.gov/i-1140.cfm )