Salt Tax Changes 2024. The proposed law, called the salt marriage penalty elimination act, would raise the cap on state and local tax deductions from $10,000 to $20,000 — but only for. Members of congress are trying to uncap the salt deduction, and more than 20 states have found a way around the issue for some taxpayers.

The cap on the state and local tax deduction — known as salt — would rise from $10,000 to $20,000 this year for married couples earning up to $500,000. The current cap for salt deductions is.