Employers who use the IRS standard mileage to reimburse employees who drive their personal cars on company business rate will need to pay a little more in 2025. The IRS announced on December 19 that the standard mileage rate for business use will increase to 70 cents per mile on January 1, 2025, up from 67 cents in 2024. These rates apply to electric and hybrid-electric automobiles, including gasoline- and diesel-powered vehicles.