For 2020, the standard mileage rates for the use of a car (also vans, pickups, or panel trucks) are:
To claim the standard mileage rate instead of actual expenses on your business vehicle:
Schedule C (Form 1040) Profit or Loss From Business:
Schedule F (Form 1040) Profit or Loss from Farming:
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.