Mortgage Interest Deduction
The TCJA reduces the deductible mortgage interest on $750,000 ($375,000 in cases of married
taxpayers filing separately) of total acquisition indebtedness for primary and secondary homes in
the case of tax years beginning after 12/31/17.
The threshold of deductible mortgage interest on $1,000,000 of acquisition indebtedness
($500,000 in the case of married taxpayers filing separately) remains for acquisition indebtedness