Trump’s tax law may leave some straphangers feeling a bit strapped.

More than three-quarters of US workers could see their commuting costs rise under the new Republican tax legislation, according to experts.

That’s because companies that offer their workers commuter benefits — including subsidies of monthly train passes, parking garage fees or even incentives for biking to work — will no longer be able to deduct those costs from their tax bill.

That, in turn, could shift more of the burden onto commuters.

“There may be employers who will no longer provide commuter benefits to their employees because they no longer have that tax deduction,” Virginia Miller, spokeswoman for the American Public Transportation Association, told The Post.

Almost 76 percent of companies pay for some or all of their workers’ transportation — which includes incentives to take trains, carpool, walk, bike, or company vans, according to the International Foundation of Employee Benefit Plans.

But while companies will no longer be able to deduct those charges, they’ll get more than enough savings to offset that line item after the government slashes the corporate tax rate to 21 percent from 37 percent on Jan. 1.

“We think it will have a very small, negligible effect,” Jody Dietel, chief compliance officer for WageWorks, which works with companies to provide commuter benefits like MTA Metrocards, told The Post.

WageWorks makes about 15 percent of its revenue from commuter benefit packages, but its business isn’t expected to be affected, according to Stifel, an investment bank.

Taxpayers are projected to save about $17.7 billion by not subsidizing commuter plans during the next 10 years, according to the Joint Committee on Taxation, which scored the plan.

The tax savings are projected to be about 1 percent of the overall $1.5 trillion price tag for the tax bill.

Commuters will still be able to fund trips on public transportation using pretax money through company-sponsored plans.

But driving into work may get pricier for some, since the tax code is doing away with a $255 yearly benefit for companies that subsidize their employees’ parking costs.

“If companies choose to provide this benefit, it’s going to cost them more,” Matt Gardner, senior fellow at the Institute for Taxation and Economic Policy, told The Post.