WASHINGTON — The Internal Revenue Service today announced an increase in the optional standard mileage rate for the final 6 months of 2022. Taxpayers may use the optional standard mileage rates to calculate the deductible costs of operating an automobile for business and certain other purposes. For the final 6 months of 2022, the standard mileage rate for business travel will be 62.5 cents per mile, up 4 cents from the rate effective at the start of the year. The new rate for deductible medical or moving expenses (available for active-duty members of the military) will be 22 cents for...