Part I Qualified Loan Limit
Publication 936 — Home Mortgage Interest Deduction · 2026-10-03 edition · updated 2026-10-04 · United States
1. Enter the average balance of all your grandfathered debt. See the line 1 instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.
2. Enter the average balance of all your home acquisition debt incurred after October 13, 1987, and prior to December 16, 2017. See the line 2 instructions . . . . . . . . . . . . . . 2.
3. Enter $1,000,000 ($500,000 if married filing separately) . . . . . . . . . . . . . . . . . . . . . . . . . . 3.
4. Enter the larger of the amount on line 1 or the amount on line 3 . . . . . . . . . . . . . . . . . . . . 4.
5. Add the amounts on lines 1 and 2. Enter the total here . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.
6. Enter the smaller of the amount on line 4 or the amount on line 5 . . . . . . . . . . . . . . . . . . 6.
- If you have no home acquisition debt incurred after December 15, 2017, or the
amount on line 6 is $750,000 ($375,000 if married filing separately) or more, line 6 is your qualified loan limit. Enter this amount on line 11 and go to Part II, line 12.
- If you have home acquisition debt incurred after December 15, 2017, go to line 7.
7. Enter the average balance of all your home acquisition debt incurred after December 15, 2017. See the line 7 instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.
8. Enter $750,000 ($375,000 if married filing separately) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.
9. Enter the larger of the amount on line 6 or the amount on line 8 . . . . . . . . . . . . . . . . . . . . 9.
10. Add the amounts on lines 6 and 7. Enter the total here . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.
11. Enter the smaller of line 9 or line 10. This is your qualified loan limit . . . . . . . . . . . . . 11.
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