Get your taxes done using TurboTax

I am assuming you are asking how to enter  Form 1099INT Box 8.

You can report the information from the 1099-OID on the 1041 return using these steps:

1. Click on Federal Taxes > Income
2. In the Interest and Dividends section, click on the Start/Update box next to Interest Income on 1099-INT.
3. On this screen, report the following items from the 1099-OID:
4. Box 1 (OID) and Box 2 (Other Periodic interest) -- add together and enter in Box 1 of 1099-INT.
5. Box 3 US Treasury Interest.
6. Box 4 (Fed tax withheld) -- Box 4 of 1099-INT
7. Box 5 (Investment Expense)
8. Box 6 Foreign Tax Paid
9. Box 8 Tax Exempt Interest
10. Box 9 - Specified Private Activity Bond
11. Box 10 Market Discount
12.  Then Check the box in the screenshot below to get to the page to enter the Bond Premium amount in Box 11.

@ivancillo