Here is how to enter your 1098-E which is what you will receive from the lender.

1. Select "Federal Taxes" on the left panel  
2. Select the "Deductions & Credits" sub-tab at the top of the screen 
3. Choose Show All Tax Breaks
4. Scroll down to the Education Section and select show more. 
5. Click Start next to Student Loan Interest Paid (Form 1098-E)