As of January 1, 2022, the IRS Mileage Reimbursement Rate is $0.585 cents per mile.
Effective July 1, 2022, the IRS Mileage Reimbursement Rate will increase to $0.625 cents per mile.
Travel reimbursement up through June 30 will be the old rate. Travel from July 1 through the end of the year will be at the new rate (unless there are additional rate changes).
Follow this link for IRS information on Mileage Reimbursement.