How do I adjust the amount on line 4a of Form 8960?

To adjust the amount on line 4a of Form 8960 Net Investment Income Tax, go to:

1. Federal Section
2. Income
3. Less Common Income
4. K-1 Earnings
5. Schedule K-1 Form 1041
6. Adjust the amount listed in box 5 

Line 4a is the rental real estate, royalty, partnership, S corporations, trust income subject to Net Investment Income Tax.