The IRS allows you to take either your actual costs of driving your vehicle as a business expense(gas, insurance, repairs, etc) or to track your miles driven, and use the standard business mileage rate. You would then multiply your miles driven for business against this rate, and voila, there’s your expense. For 2021 the standard business mileage rate is .56 cents per mile (it was .575 in 2020). You can’t do both actual costs and miles driven as that would be double dipping. For purposes of this blog, we are going to assume you are tracking miles in lieu of using your actual costs. So, lets’ say you drive 15,000 business miles, your expense on your taxes would be $8,400 (15,000 x .56). Easy enough. However, we will now shift over to the question at hand: how necessary is it to actually track this?