"When does Tesla’s tax credit phase out?
Tesla’s $7,500 tax credit per vehicle drops to $3,750 on Jan. 1, 2019. It drops to $1,875 on July 1, 2019, then vanishes entirely on Jan. 1, 2020."
https://www.cars.com/articles/tesla-tax-credit-is-expiring-heres-everything-shoppers-need-to-know-1420700959540/
"If you’re wondering why no Teslas or the GMC Hummer EV are included, it’s because GM and Tesla vehicles are no longer eligible for the federal tax credit. When a manufacturer sells its 200,000th qualified vehicle, the tax credit is scheduled to wind down, reducing by half to $3,750 and then half again over a period of time before being reduced to nothing. Tesla sold its 200,000th vehicle in 2018, and the credit fully expired at the end of 2019."
https://www.cars.com/articles/which-electric-cars-are-still-eligible-for-the-7500-federal-tax-credit-429824/