If the amount of tax due is more than $100, the Department can establish a payment plan. The request can be made once your return has completed processing and you have received a bill for the tax due. For more information, you may contact us at (317) 232-2165, Monday through Friday, 8 a.m. – 4:30 p.m., EST. Penalties will be assessed on any unpaid balance remaining after the original due date.
Interest rate information can be found at Tax Types & Various Rates.