…...or if it was just for Federal taxes....and if you owed $520 in back taxes from a different year...there are penalties and interest that gets tacked on that can be substantial depending on how many years it's been.
Wait for a letter from the IRS in a couple weeks...there could be more items too. Offsets for long overdue State taxes (IF the state asked the IRS to get them ) could have been tacked on...overdue child support....
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
