If you use a vehicle for certain driving purposes, you can deduct your costs based on your actual expenses or rely on an IRS-set mileage rate. The IRS has announced the standard mileage rates that can be used for certain types of deductible-driving (Notice 2021-02). These rates apply for the use of a car, van, pickup, or panel truck:
If you use the standard mileage rate to figure your deduction for business use of a vehicle you own, you must reduce the basis of the vehicle by a cents-per-mile rate. For 2021, the rate is 26 cents per mile (down one cent from the 2020 rate).
A tax requirement for deducting travel expenses on a business trip. Sleeping arrangements are required for at least one night before returning home.