The One Big Beautiful Bill Act is temporarily quadrupling the state and local tax deduction to at least $40,000, up from $10,000, for the next five years. Now it’s up to taxpayers to see if they can take advantage of this extra write-off, which is popularly referred to as the SALT deduction.

A new $6,000 tax break for Americans aged 65-plus could offer relief, but some may see little benefit. Here’s who will benefit the most.

WSJ subscribers asked about what the bill means for SALT, electric vehicles, estate taxes, Social Security, Medicare and more.