Indiana Code
Chapter 6. Filing and Due Dates
6-8.1-6-3. Date of Filing

Sec. 3. (a) A document, including a form, a return, a payment, or a writing of any type, which must be filed with the department by a prescribed date, is considered filed:
(1) in cases where it is mailed through the United States mail, on the date displayed on the post office cancellation mark stamped on the document's wrapper;
(2) in cases where it is delivered to the department in any manner other than through the United States mail, on the date on which the department physically receives the document; or
(3) in cases where a payment is made by an electronic fund transfer, on the date the taxpayer issues the payment order for the electronic fund transfer.
(b) If a document is sent through the United States mail by registered mail, certified mail, or certificate of mailing, then the date of the registration, certification, or certificate, as evidenced by any record authenticated by the United States Post Office, is considered the postmark date.
(c) If a document is mailed to the department through the United States mail and is physically received after the appropriate due date without a legible correct postmark, the person who mailed the document will be considered to have filed the document on or before the due date if the person can show by reasonable evidence to the department that the document was deposited in the United States mail on or before the due date.
(d) If a document is mailed to, but not received by, the department, the person who mailed the document will be considered to have filed the document on or before the due date if the person can show by reasonable evidence to the department that the document was deposited in the United States mail on or before the due date and if the person files with the department a duplicate document within thirty (30) days after the date the department sends notice that the document was not received.
As added by Acts 1980, P.L.61, SEC.1. Amended by P.L.92-1987, SEC.9; P.L.63-1988, SEC.15; P.L.211-2007, SEC.41.

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