The IRS has a web site for dealers to register:
After Jan 1, I want to buy a used EV from a dealer who has registered so that I can get the $4,000 credit immediately and not have to wait until I file my taxes the following year.
Is there a way to search for dealers who are participating?
I wouldn’t worry about it for 2024.
Dealers are going to be claiming the credit for themselves, and then passing it on to you via a discount. This is money in their pocket. Dealers are not going to pass up free money. It may be a bit rocky in early Jan as the system works the kicks out, though.
They don’t need to be registered to get you the credit this year so even if you could track that it’s not a full picture of who would and who wouldn’t. Anyone willing to fill out a 15400 form is a participant. Bring it with you when you buy and don’t sign the papers with finance until they fill it out and promise to file
I’m talking about next year, 2024.