Fill in your Social Security Number (SSN) in Step 1: Personal information.
Signature: returns must be signed by hand or via a digital signature with a digital certificate; stamped or typed signatures are not accepted.
With the return: sign, include federal return, W-2s, and verify SSNs.
Amended return: if this is an amended return, check the box and include the IA 102.
Filing status: from federal 1040; mark one box only.
| Question | Answer |
|---|---|
| Form Name | IA 1040 |
| Form Length | 6 pages |
| Fillable? | Yes |
| Fillable fields | 255 |
| Avg. time to fill out | 43 min |
| Edition | Rev 07/24/2025 |
| Filing deadline | April 30, 2026 |
| Where to send | With the federal return and W-2s, to Iowa Income Tax Document Processing, PO BOX 9187, Des Moines IA 50306-9187 |
| Matches the agency's file | Yes, checked October 2, 2026 |
| Other names | IA 1040, IA1040, Iowa IA 1040, Iowa Individual Income Tax Return, Iowa income tax form |
| Official source | IA 1040 (Rev 07/24/2025), Iowa Department of Revenue |
Iowa Form Ia 1040 isn’t the one you’re looking for?