The optional standard mileage rates for business use of a vehicle will decrease slightly in 2020 after increasing significantly in 2019, the IRS announced on Tuesday (Notice 2020-05 (https://www.irs.gov/pub/irsdrop/n-20-05.pdf)). For business use of a car, van, pickup truck, or panel truck, the rate for 2020 will be 57.5 cents per mile in 2020, down from 58 cents per mile last year after increasing from 54.5 cents per mile in 2018. Taxpayers can use the optional standard mileage rates to calculate the deductible costs of operating an automobile.
Because the law known as the Tax Cuts and Jobs Act (TCJA), P.L. 115-97, suspended the miscellaneous itemized deduction under Sec. 67 for unreimbursed employee business expenses from 2018 to 2025, the notice explains that the standard mileage rate cannot be used to claim a deduction for those expenses during that period.
However, self-employed taxpayers can deduct automobile expenses if they qualify as ordinary and necessary business expenses. And an exception to the disallowance of a deduction for unreimbursed employee business expenses applies to members of a reserve component of the U.S. armed forces, state or local government officials paid on a fee basis, and certain performing artists. They are permitted to deduct mileage expenses on line 11 of Schedule 1 of Form 1040, U.S. Individual Income Tax Return, (an above-the-line deduction) and may continue to use the 57.5 cents-per-mile business standard mileage rate.