How does Louisiana handle the adjustment made under IRC Section 280C?
For returns filed on or after July 1, 2015, but before June 30, 2018, regardless of the tax year to which it relates, and returns for tax periods beginning during the calendar years of 2015, 2016, and 2017, 72 percent of expenses which would otherwise be deductible under federal law, can be deducted in calculating taxable income for Louisiana.
A corporation would show this modification to income on Form CIFT-620, on Schedule D and Schedule F as a subtraction. (Question & answer revised June 15, 2021).