As the midterm elections approach, Republicans are touting President Donald Trump‘s “big beautiful bill” to voters as they fight to keep slim majorities in Congress.

But certain Americans have benefited more from Trump’s tax breaks than others, policy experts say.

Trump’s legislation, also known as the “Working Families Tax Cuts,” made permanent his 2017 tax changes while adding new tax breaks, including deductions for tip income, overtime earnings, seniors and auto loan interest, among others. The bill also added a bigger federal deduction limit for state and local taxes, or SALT, for filers who itemize.

In prepared remarks before the House Committee on Financial Services this week, Treasury Secretary Scott Bessent told lawmakers the legislation delivered tax relief “directly to millions of low- and middle-income Americans.”

More than 64 million tax returns claimed at least one of Trump’s “signature new tax cuts” — the deductions for tips, overtime, auto loan interest or the enhanced senior deduction, Bessent said this week.

Trump’s tax cuts were also a popular theme throughout the Republicans’ midterm convention in Dallas this month.

However, these tax provisions, and others, “hit households differently,” which means the impact varied based on a family’s unique situation, Joseph Rosenberg, a senior fellow at the Urban-Brookings Tax Policy Center, told CNBC.

White House spokesman Kush Desai told CNBC in an email that “tens of millions of Americans have taken advantage of at least one of these signature provisions, and President Trump will continue to tout this historic achievement for the American people.”

Here’s a breakdown of who benefited most from Trump’s tax breaks, according to policy experts.

Without extensions, some 62% of Americans would have seen tax increases in 2026 when these provisions were scheduled to expire, according to the Tax Foundation.

“A clear majority of the benefit across the board” came from making these tax breaks permanent versus the new deductions, said Garrett Watson, vice president of federal tax policy with the Tax Foundation.

But this was “extending the status quo,” so many taxpayers won’t feel the difference, he said.