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.

The One Big Beautiful Bill Act is temporarily quadrupling the state and local tax deduction to at least $40,000, up from $10,000, for the next five years. Now it’s up to taxpayers to see if they can take advantage of this extra write-off, which is popularly referred to as the SALT deduction.

The recent tax legislation under President Trump has brought significant changes to the SALT deduction, offering potential relief to homeowners in high-tax states like New York, New Jersey, and California.