The Internal Revenue Service (IRS) computes standard mileage rates for business, medical and moving each year, based on a number of factors, to determine the standard mileage rates for the following year.

As it does annually around the end of the year, the IRS has announced the 2019 optional standard mileage rates. Thus, beginning on Jan. 1, 2019, the standard mileage rates for the use of a car (or a van, pickup or panel truck) are:
58 cents per mile for business miles driven (including a 26-cent-per-mile allocation for depreciation). This is up from 54.5 cents in 2018;

20 cents per mile driven for medical or moving* purposes. This is up from 18 cents in 2018; and

14 cents per mile driven in service of charitable organizations.

* For years 2018 through 2025, the deduction for moving is only allowed for members of the armed forces on active duty who move pursuant to a military order.