The optional standard mileage rates for business use of a vehicle will increase significantly in 2019, after increasing slightly last year, the IRS announced Friday (Notice 2019-2). For business use of a car, van, pickup truck, or panel truck, the rate for 2019 will be 58 cents per mile up 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.

The Social Security Administration (SSA) announced that the maximum amount of wages subject to the old age, survivors, and disability insurance (OASDI) tax will increase to $132,900 for 2019. The OASDI tax rate is 6.2%, so an employee with wages up to or above the maximum in 2019 would pay $8,239.80 in tax and the employer would pay an equal amount. Self-employed individuals pay tax at a 12.4% rate up to the limit. The 2018 wage base is $128,400, for a $7,960.80 maximum amount of OASDI tax.  The Medicare hospital insurance tax of 1.45% each for employees and employers, or 2.9% for the self-employed, has no wage limit.