Salt Tax Bill 2024. The legislation, called the salt marriage penalty elimination act, would have doubled the cap on the state and local tax (salt) deduction—but just for one year. So as the name implies, the salt deduction allows itemizing taxpayers to deduct property, sales, or income taxes they have already paid to state and local.

Below, we provide a brief history. The legislation, called the salt marriage penalty elimination act, would have doubled the cap on the state and local tax (salt) deduction—but just for one year.