Indiana Income Tax 2024. Aug 05, 2024 05:05 pm ist. Indiana has a flat statewide income tax of 3.15% for tax year 2023, which falls to $3.05 in 2024.

The indiana individual adjusted gross income tax rate for 2023 is 3.15% and will adjust in 2024 to 3.05%. Updated on jul 23 2024.