You probably track your business mileage. At least you should, or you could be paying more in taxes. The 2012 IRS mileage rate is 55.5¢ a mile: that means that you get to deduct 55.5¢ from your taxable income for every mile you drive for business. It’s gone up to 56.5¢ for 2013. Going to the bank, the post office, the market, out to a networking event, to a client meeting: if there is a business purpose for driving, you can deduct the mileage. And it adds up fast.
You can just keep a notebook in the car and jot down your mileage that way. I prefer to use an iPhone app. The one I use is called MileBug. It allows me to save common destinations and purposes so it only takes a couple of taps to add a mileage event. At the end of the year, I email a report to myself which I can open in a spreadsheet. I review it and copy the totals to send to my accountant: boom, I just got a tax deduction.
How do you track your mileage?