Indiana Department of Revenue (DOR) is extending individual income tax filing and payment deadlines to align with the Internal Revenue Service (IRS) deadline of May 17, 2021.
Individual tax returns and payments, originally due by April 15, 2021, are now due on or before May 17, 2021.
It is important to note that the extension only shifts the filing deadline and not the payment deadline. Ninety percent of the taxes owed are still required to be paid by May 17, 2021, to avoid penalties and interest.
https://events.in.gov/event/dor_announces_individual_filing_and_payment_deadline_extension