State and federal taxes are due on Tuesday, April 15. Here's what to know to submit your documents to the IRS and the Indiana Department of Revenue.

Pay what you owe using an online payment option and check the box that you are paying as part of filing for an extension. Use IRS Free File to electronically request an automatic tax-filing extension.

“If you request an extension and expect to owe, it’s important to remember that it’s an extension of time to file, not an extension of time to pay,” H&R Block’s Andy Phillips said.

If you fail to file your taxes within three years of the original deadline, you won't get your refund at all. If you want to file an extension, fill out and return this form.