The New Home Mortgage Interest Deduction

a toy house with some keys next to it resting on a few 100 dollar bills

The new law first imposes a lower dollar limit on mortgages qualifying for the home mortgage interest deduction. Beginning in 2018, taxpayers may only deduct interest on $750,000 of new qualified residence loans ($375,000 for a married taxpayer filing separately), and the limits apply to the combined amount of all mortgage loans. Moreover, the extra $100,000 of home equity interest is gone entirely.