For as long as Americans have paid federal income taxes, they’ve been able to subtract some of what they pay to their state and local governments from their taxable income. This federal deduction for state and local taxes — the SALT deduction,

If the House provision is enacted, the SALT cap would rise to $40,000, up from $30,000 in the previous plan, and phase out over $500,000.

U.S. Rep. Elise Stefanik said she was the “deciding vote” on a megabill that quadrupled the maximum state and local tax deduction.