Schedule A-2 is located on Page 4 of this form.
Form 104: must be filed with this return.
Deadline: not later than May 15, 2026, unless an extension of up to thirty (30) days is granted in writing for the county where the property has tax situs.
Extension: the written request should be sent to the assessor before the filing deadline of May 15, 2026, and should include a reason for the request.
Amended return: taxpayers who discover an error on a timely filed return have the right to amend it within twelve (12) months of the due date or extended due date.
Special tools: if you owned, held, possessed, or controlled any Special Tools on January 1, complete Form 103 - T.
| Question | Answer |
|---|---|
| Form Name | Form 103 - Long |
| Form Length | 4 pages |
| Fillable? | Yes |
| Fillable fields | 280 |
| Avg. time to fill out | 47 min |
| Edition | R50 / 11-25 |
| Issuing agency | Department of Local Government Finance |
| Where to file | The township assessor, if any, or county assessor of the county in which the property is located |
| Filing deadline | Not later than May 15, 2026, unless an extension of up to thirty (30) days is granted in writing for the county where the property has tax situs |
| Other names | Form 103 Long, 103 Long, Form 103, State Form 11405, Indiana Form 103 Long, Business Tangible Personal Property Return |
| Official source | State Form 11405 (R50 / 11-25), Department of Local Government Finance |
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