An anonymous reader quotes a report from Ars Technica: The nascent market for electric cars will suffer a big setback if the Republican tax plan released on Thursday enters into law. Among the changes to the current tax code would be an end to the Plug-In Electric Drive Vehicle Credit. That's the tax incentive that currently means up to $7,500 back from the IRS when you purchase a new battery or plug-in hybrid electric vehicle. Since the start of 2010, the EV tax credit has been $2,500 for a plug-in vehicle with at least 5kWh battery capacity. Every extra kWh nets another $417 up to a maximum of $7,500, although you would need at least that amount in income tax liability -- the IRS won't cut you a check to make up the full amount. It was never meant to be permanent; once an automaker sells 200,000 qualifying vehicles (starting from January 1, 2010) its eligibility is phased out over a matter of months. But in the almost seven years since, no one has reached that limit yet. Tesla will almost certainly be first, with General Motors not far behind; between them, they've sold a lot of Model Ses and Chevrolet Volts. If this tax plan is enacted, it will surely mean pain for both companies, as well as anyone else hoping to sell a lot of EVs here in the U.S. The data is pretty clear -- tax incentives sell electric cars, and the market for EVs can dry up very fast when they're abolished, as Georgia's recent experience shows.