IRS , in response to the increased price of gas, increased optional standard mileage rates for the last half of 2022. The rates are used for computing the deduction for automobiles used for business, medical, and moving expense. The rate did not change for calculating the deduction for use of an automobile for charitable purposes as the rate is set by statute which did not change.

The change applies for the second half of 2022  are:

Business use of auto: 62.5 cents per mile (up from 58.5 cents for January 1, 2022, to June 30, 2022) may be deducted if an auto is used for business purposes. If you are an employee, your employer can reimburse you for your business travel expenses using the standard mileage rate. However, if you are an employee and your employer does not reimburse you for your business travel expenses, you cannot currently deduct your unreimbursed travel expenses as miscellaneous itemized deductions.

Charitable use of auto: 14 cents per mile (the same as for January 1, 2022, to June 30, 2022) may be deducted if an auto is used to provide services to a charitable organization if you itemize deductions on your income tax return. Your charitable deduction may be limited to certain percentages of your adjusted gross income, depending on the type of charity.

Medical use of auto: 22 cents per mile (up from 18 cents for January 1, 2022, to June 30, 2022) may be deducted if an auto is used to obtain medical care (or for other deductible medical reasons) if you itemize deductions on your income tax return. You can deduct only the part of your medical and dental expenses that exceeds 7.5% of the amount of your adjusted gross income.

Moving expense: 22 cents per mile (up from 18 cents for January 1, 2022, to June 30, 2022) may be deducted if an auto is used by a member of the Armed Forces on active duty to move, pursuant to a military order, to a permanent change of station (unless such expenses are reimbursed). The deduction for moving expenses is not currently available for other taxpayers.

The IRS normally updates the standard mileage rates once a year in the fall for the next calendar year. Mid-year increases in the standard mileage rates are rare — the last time the IRS made such an increase was in 2011.

IRS Announcement 2022-13