The United States federal state and local tax (SALT) deduction is an itemized deduction that allows taxpayers to deduct certain taxes paid to state and local governments from their adjusted gross income.
The SALT deduction reduces the cost of state and local taxes to taxpayers. It disproportionately benefits wealthy and high-earning taxpayers in areas with comparatively high state and local taxes.[1][2][3]
The Tax Cuts and Jobs Act of 2017 put a $10,000 cap on the SALT deduction for the years 2018–2025.[4] The Tax Policy Center estimated in 2016 that fully eliminating the SALT deduction would increase federal revenue by nearly $1.3 trillion over 10 years.[5]