You should get a 1099INT for it. Wait for it. They have until Jan 31 to send it to you if it is more than $10. If it is less than $10 you can get the amount from your Dec bank statement or logging into your bank account online.
Enter a 1099-Int under
Federal
Wages & Income
Interest and Dividends
Interest on 1099-INT - Click the Start or Update button
For interest from the IRS put the amount in box 1.
