When claiming a gas mileage deduction for your small business, make sure you first understand which kinds of mileage are actually deductible. Personal trips like going to the mall or to the gym don’t count. Neither do commuting miles, such as going to your regular place of work.
Running errands, going to see clients, or doing day-to-day business purpose activities after you’ve already been to the office do qualify for a tax deduction.
You’ll also need to determine the standard mileage rate that the IRS is currently using. You can find this information at IRS.gov. If you keep track of your mileage on a weekly basis and then multiply it by this rate, that is the number to use on your tax return.