President Donald Trump ’s ‘big beautiful bill’ delivers a temporary higher limit on the federal deduction for state and local taxes, known as SALT. But the phaseout, or income-based benefit reduction, could trigger a tax surprise for some higher earners, experts say.

A deduction to defray homeowners’ state income taxes and local property taxes is getting much more generous, following fierce debate among lawmakers in Washington. The focus on the write-off is now coming from homeowners deciding if they should use the deduction to their advantage for the first time in years.