Biden’s EV Tax Credit Rules Leave Automakers in the Dark, Again

Automakers have been waiting for the US Treasury Department to help them figure out which of their cars are eligible for lucrative electric-vehicle tax credits. The Treasury’s response: Keep waiting.

The department released new rules on Friday codifying many, but not all, of the qualifications needed for consumers to claim as much as $7,500 per vehicle. These include some provisions on sourcing critical minerals for batteries and other components that are still incomplete.

That leaves automakers and dealers with a suite of cars that are only eligible for purchase incentives until the new rules take effect April 18, and a ...