If you wait until after New Year to buy a Model Y, you will not be able to take advantage of the federal tax credit. The most common five-seater versions won't be eligible for the new incentive because it's not on the list of vehicles that qualify.
The Model Y Long Range isn't considered a "non-passenger automobile" according to federal specifications. The gross vehicle weight must be between 6000 and 14500 pounds to fall under the IRS main SUV qualification. The Model Y has a curb mass of over 4,000 lbs.
The Model Y would be in the same category as the Chevy Bolt if it weren't an SUV. The Model Y Long Range is not currently eligible for the credit.
The disqualification is "messed up" in a reply to a fan comparing a Jeep to the Model Y. The Model Y is too light to be considered an SUV according to Musk's reply. Is that punishment for making our SUV too mass- efficient? Musk wrote that it's weird.
The seven-seater version of the Model Y is eligible even though it's under 6,000 pounds. The five-seater does not have a fold-flat third-row seating option. The Model Y does not have a ground clearance that is 20 centimeters or higher, which would make it an SUV. It would need active air suspension like the Model X to fix that.
The seven-seater version of the Model Y is eligible for the tax incentive because it is an SUV. The Model Y Performance trims can not be configured with the seven-seat option, making them ineligible as well.
The Ford Escape Plug-in hybrid is considered a clean vehicle by the IRS, but the Ford Mach-E isn't. The Escape is less heavy than the Mach-E.
The new clean vehicle qualifications require some changes to be made by manufacturers. It might be difficult to get over 6000 pounds for the Model Y, but it could be done.