can i estimate business mileage
2. Calculate your business mileage. Mileage deducted for business purposes includes travel to clients or customers, going to a business meeting away from a regular workplace, going to a temporary workplace if you have a regular place of work or traveling among several offices within a region.. Calculate your total at the end of the year. Multiply the total number of miles traveled throughout the year by the mileage rate for each category. For instance, you may deduct 14 cents per mile when working for charitable organizations and 57.5 cents per mile traveled for business.