Ind. Code ch. 6-3-8.1

in effect

Ind. Code § 6-3-8.1-1 Application of chapter

Sec. 1. This chapter applies to a taxpayer that: (1) was subject to the supplemental net income tax under IC 6-3-8 (before its repeal) before January 1, 2003; and (2) has a taxable year that begins before January 1, 2003, and ends after December 31, 2002. As added by P.L.220-2011, SEC.140.

Ind. Code § 6-3-8.1-2 Provisions applying to imposition and collection of supplemental net income tax; filing of estimated tax return and final tax return

Sec. 2. Notwithstanding the repeal of IC 6-3-8-5 by P.L.192-2002(ss), the provisions of IC 6-3-8-5 (repealed) apply to the imposition, collection, payment, and administration of the supplemental net income tax imposed under this chapter, including the requirement related to filing the taxpayer's estimated supplemental net income tax return and paying the taxpayer's estimated supplemental net income tax liability to the department of state revenue. The taxpayer shall file a final supplemental net income tax return, in the manner prescribed by the department of state revenue, before the fifteenth day of the fourth month following the close of the taxpayer's regular taxable year, determined as if IC 6-3-8 had not been repealed by P.L.192-2002(ss). As added by P.L.220-2011, SEC.140. Amended by P.L.6-2012, SEC.51.

Ind. Code § 6-3-8.1-3 Determination of supplemental net income tax; forms and procedures

Sec. 3. (a) The supplemental net income tax imposed under IC 6-3-8 (repealed) for that taxable year is equal to the result determined under STEP TWO of the following formula: STEP ONE: Determine the product of the taxpayer's net income for the taxpayer's regular taxable year multiplied by a tax rate equal to four and five-tenths percent (4.5%). STEP TWO: Multiply the STEP ONE result by a fraction, the numerator of which is the number of days in the taxpayer's taxable year that occurred before January 1, 2003, and the denominator of which is the total number of days in the taxable year. (b) The department of state revenue may prescribe forms and procedures for reconciling: (1) the returns and tax due under P.L.192-2002(ss), SECTION 197, before the enactment of P.L.269-2003, SECTION 13; and (2) the returns and tax due under P.L.192-2002(ss), SECTION 197, as amended by P.L.269-2003, SECTION 13. The procedures may include procedures for granting an automatic extension for the filing of some or all returns that were due before April 16, 2003, under P.L.192-2002(ss), SECTION 197, before the enactment of P.L.269-2003, SECTION 13. As added by P.L.220-2011, SEC.140. Amended by P.L.6-2012, SEC.52.

Source: Open US Law by Vaquill AI (CC BY 4.0)URL: https://iga.in.gov/laws/2026/ic/titles/6Fetched: 10/17/2026