The EV tax credit dropped in a proposal by the U.S. House of Representatives could be back, if a plan by the Senate is approved.

Last Thursday, the Senate released a tax reform package that kept the Plug-in Electric Drive Vehicle Credit intact. That’s the up-to $7,500 credit designed to make plug-in hybrid and fully electric vehicles more affordable to more people.

When the House version came out with no more credit, automakers and environmental groups came out loudly lobbying to bring it back. Affordable EVs like the Chevrolet Bolt, Nissan Leaf, and Tesla Model 3 are starting to gather steam in popularity and on sales charts, but removing the credit would move the vehicles out of the budgets of many buyers.

The Alliance of Automobile Manufacturers, an auto industry lobby group spoke out in a statement.

“There is no question that the potential elimination or phase out of the electric vehicle tax credit will impact the choices of prospective buyers, and make it more challenging for manufacturers to comply with electric vehicle mandates in 10 states,” the statement read.

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So if the House says no, and the Senate says yes, what happens to the credit? If the two tax plans are approved but different, then they go to a special conference committee. Made up of members of the Senate and House, the committee will work to come to a consensus about the different provisions in the law.

If the plans go to committee with such large differences, then it’s likely that some changes will be made to the tax credit. That could see the amounts change, the requirements change, a purchase price cap, or even establish income thresholds to qualify for the credit.