dmertz makes a good suggestion. Even though you may not have intended to claim a tuition credit, TurboTax (TT) may have allocated some of your college expenses to the credit (we've seen this in the past).
Go through the education section again. When you get to the screen that says “Here’s your Education Summary”. Click edit next to “Education Information”. When you get to the screen titled “Amount Used to Calculate Education Deduction or Credit”, verify the amount you want to use or change it.
