You don't necessarily get all of the Mississippi tax back. Income is subject to tax in the state where you earn it. All your income is also subject to tax in the state you live in, no matter where the income is from. You have to file a Mississippi nonresident tax return in addition to your Indiana resident tax return. The Mississippi return will determine how much, if any, of the Mississippi tax you get back. You will get a credit on your Indiana return for any tax that you have to pay to Mississippi. Prepare your Mississippi nonresident tax return first, then your Indiana resident tax return.
