Besides manually changing the standard IRS mileage reimbursement rate is there a way to change the default amount from $0.58 to $0.575? See below.

WASHINGTON — The Internal Revenue Service today issued the 2020 optional standard mileage rates (PDF) used to calculate the deductible costs of operating an automobile for business, charitable, medical or moving purposes.

Beginning on January 1, 2020, the standard mileage rates for the use of a car (also vans, pickups or panel trucks) will be:

• 57.5 cents per mile driven for business use, down one half of a cent from the rate for 2019