So full tax rebate for Honda clarity is $7500? Do you have to bring any specific paper to your tax preparer to claim this rebate?
You will need the Vin # and the date you took possession of the car (when you put it into service in 2020). Your paid tax preparer might want to see a copy of your bill of sale and or registration since they stand behind your filing.
It is a tax credit, not a rebate. Do a search for Form 8936 to see what information will be required.