Indiana Code Title 6. Taxation § 6-5.5-9-3

Sec. 3.  If the tax imposed by this article is held inapplicable or invalid with respect to a taxpayer, then notwithstanding the statute of limitations set forth in IC 6-8.1-5-2(a), the taxpayer is liable for the taxes imposed for the taxable periods with respect to which the tax under this article is held inapplicable or invalid.