There was originally a $7,500 federal tax credit available. Tesla's eligibility for the that tax credit was cut in half at the start of 2019 and fully ended at the start of 2020, so anyone buying in 2020 or later would have paid the sticker price, unless they benefitted from state-level tax credits.
I think the Model Y qualifies for the new tax credit that just took effect, though there's an income limit and other restrictions.