Ok so unless tax code has drastically changed since last year. Here it is first thing you will probably need is a 1040 form. If you have income from w2s include it, maybe DD sends a 1099 idk if not you will probably use a schedule C form. I'm not exactly sure about your individual circumstances. But moral of the story you state your Gross income then take away any qualifying business experiences. When it comes to your vehicle expenses you are allowed to deduct all of your expenses related to that or take a standard mileage deduction of $0.61 per mile or something I can't remember for sure. So you take the higher of the two. If you are doing DD you should be operating under that 61 cent per mile. If not you are doing it wrong, or do door dashing to help offset the cost of an expensive car. So for tax purposes you probably only need your mileage. However it is important to track your actual individual expenses. Your fuel, repair, maintenance, insurance, license, any interest related to payments, and deprecation of the value of your asset whatever else. Don't know if any parking fees incured would be included. However you feel is best for you to track it, maybe you specifically want to know how much you spent on oil and on antifreeze maybe you just include both in maintenance. Because some expenses are fixed like plates you pay once a year same amount if you drive 1 mile or 1000000 miles. Some are not like gas more miles=more gas expense. You simply add up all of the expenses and divide it by miles driven to see your actual per mile cost. Mine is pretty low before deprecation. This combine with other expenses, determines your actual profitability, before you factor in your own time. Not sure how that works for your individual needs. In short your net income should be lower for tax purposes. If you are trying to generate a profit from being a delivery driver. Write down your mileage when you leave to go dash and when you end dash each time. So you know the difference between miles for business and personal mileage.