File Indiana Tax Returns & Get Your Tax Refund Faster

Indiana State Sign

Indiana's state income tax rate is a flat rate of 3.3% for all residents. This is lower than the national average. The state's tax revenue is more than $15 billion, which is close to the nation's median range. All residents, partial-year residents and nonresidents who earned income within the state are required to file an individual income tax return for the applicable year. Residents must use Form IT-40, and nonresidents and partial-year residents must use Form IT-40PNR.

Indiana Tax Deadlines

Individual income tax forms must be filed by April 15. If a taxpayer requires a tax extension, it must also be filed by this date to avoid penalties. To file an Indiana tax extension, visit Click on the link for Form IT-9. Mail the completed IT-9 to Indiana Department of Revenue at:

PO Box 6117
Indianapolis, IN 46206-6117

Or, if if sending with a payment to: PO Box 7224
Indianapolis, IN 46207-7224:

Taxpayers who owe tax also have the option to pay this online when filling with us or directly on the IN Department of Revenue website.

Amended Returns

When an error is discovered on an Indiana tax return that was already sent and accepted, taxpayers must file an amended return. To do this, use Form IT-40X from the Department of Revenue's site. After completing the form, mail it with any required payment to:

Indiana Department of Revenue
100 North Senate Avenue
Indianapolis, IN 46204-2253

Tracking A Tax Return Or Indiana Tax Refund

To check the status of an Indiana tax refund, go to Refund status is also available over the phone by calling 317-233-4018. For information about a possibly lost return, amended return status or for other questions related to tax refunds, call 317-232-2240.

Estimated Payments

Taxpayers who are self-employed or do not have enough taxes taken from their checks may be required to pay estimated taxes. Use Form IT-40ES to determine estimated tax liability. Mail the completed vouchers that come with the form by their due dates to:

Indiana Department of Revenue
PO Box 7223
Indianapolis, IN 46207-7223

Late Filing And Nonpayment Penalties

If an Indiana tax return is filed after April 15 without at least 90% of the tax due paid, there is a penalty fee of 10% of the tax due. Taxpayers who do not file a return at all during that tax year incur a penalty fee of 20% of the tax due.

Note: States & U.S. territories may make changes to their tax laws with little notice. We do our best to keep this information up-to-date, but it is provided on an "AS IS" basis. For more see our terms.

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