Indiana Code - Taxation - Title 6, Section 6-3-1-16

"Taxable year" defined

Sec. 16. The term "taxable year" with respect to any taxpayer
means the taxable year of such taxpayer as shown on his return
required to be filed or filed pursuant to the Internal Revenue Code.
Where a taxpayer does not file a return pursuant to the Internal
Revenue Code, his taxable year shall be the calendar year.
(Formerly: Acts 1963(ss), c.32, s.116.)

Last modified: May 28, 2006