Beginning in 2025, there is a temporary increase to the $10,000 SALT [state and local tax] cap.   From 2025 through 2029 , you may deduct up to $40,000 if married filing jointly, or $20,000 if married filing separately. The limits are adjusted annually for inflation, beginning in 2026. However, unless extended by Congress, the cap will revert to $10,000/$5,000 in 2030. There’s a catch.  The increased deduction phases out if your modified adjusted gross income (MAGI) exceeds $