Ind. Code § 6-1.1-12-10.1
(b) The statement referred to in subsection (a) shall be in affidavit form or require verification under penalties of perjury. The statement must be filed in duplicate if the applicant owns, or is buying under a contract, real property, a mobile home, or a manufactured home subject to assessment in more than one (1) county or in more than one (1) taxing district in the same county. The statement shall contain:
(c) In order to substantiate the deduction statement, the applicant shall submit for inspection by the county auditor a copy of the applicant's and a copy of the applicant's spouse's income tax returns that were originally due in the calendar year immediately preceding the desired calendar year in which the property taxes are first due and payable and for which the applicant and the applicant's spouse desire to claim the deduction. If either was not required to file an income tax return, the applicant shall subscribe to that fact in the deduction statement.
As added by Acts 1980, P.L.40, SEC.1. Amended by Acts 1982, P.L.44, SEC.2; Acts 1982, P.L.45, SEC.2; P.L.55-1988, SEC.3; P.L.291-2001, SEC.132; P.L.90-2002, SEC.107; P.L.154-2006, SEC.13; P.L.183-2007, SEC.2; P.L.144-2008, SEC.14; P.L.183-2014, SEC.7; P.L.214-2019, SEC.5; P.L.257-2019, SEC.19.