Ans- Steps require to prove mileage for taxes: 1. Firstly, confirm you qualify for mileage deduction. 2. Secondly, determine a method of calculation. 3. Thirdly, record the odometer at the beginning of Tax year. 4. If required then maintain the driving log. 5. In case needed maintain a record of receipts. 6. At end of the tax year, you need to record the odometer. 7. Next, record mileage on the tax returns. 8. Lastly, retain the documentation.