File Idaho Form 40
Prepare Idaho Form 40 now with e-File.com
Instructions
Download Instructions PDF
Idaho Form 40 2018
Idaho Individual Resident Income Tax Return
Need more time? Get an extension until October 15 in just 5 minutes. Start Now with E-File.com.
Use Idaho Form 40 if you are a resident of Idaho and need to file your income tax return or amend a tax return. If you are a nonresident, part-year resident or nonresident alien for federal purposes and are required to file an income tax return for Idaho, use Form 43.