Can I deduct can i write off gas and mileage?

You can choose between the actual expense method, where you deduct the actual costs of operating the vehicle (including gas, oil, repairs, tires, insurance, registration fees, licenses, and depreciation), or the standard mileage rate method, where you deduct a set rate per mile driven for business purposes. For 2023, the standard mileage rate is 65.5 cents per mile. You must use the same method consistently throughout the year. Personal commuting miles are not deductible. If you use the actual expense method, you must calculate the percentage of business use by dividing business miles by total miles driven. Keep in mind that if you use a vehicle for both personal and business purposes, only the business portion is deductible.