State and local taxes are at the center of the fight over Trump's big bill. Here's what taxpayers in every state pay.

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• Some Republicans are once again targeting a cap on deductions for state and local taxes, aka SALT.
• The SALT deduction cap affects high-tax states like New York and California significantly.
• Part of the GOP tax and spending bill proposes raising the cap to $30,000, sparking debate.

A tax deduction known as SALT that helps affluent residents of high-tax states is standing in the way of President Donald Trump's "big beautiful bill."

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