Idaho — Individual Apportionment for Multistate Businesses
More about the Idaho FORM 402 (Obsolete)
We last updated Idaho FORM 402 (Obsolete) in April 2021 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 ID-VP | Income Tax Payment Voucher |
| FORM 51 | Estimated Payment of Idaho Individual Income Tax |
| FORM 39R | Idaho Supplemental Schedule (Resident) |
View all 66 Idaho Income Tax Forms
Disclaimer: While we do our best to keep FORM 402 (Obsolete) 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 Is this form missing or out-of-date?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 )