If you're a ride-share driver, delivery person or other gig worker, a simple smartwatch habit could land you in hot water during a tax audit. That's because fitness app users who track business miles might not be aware of the in-app limitations.
For instance, many free versions of distance-tracking apps cap the number of trips you can take, forcing you to record them later. But if you aren't logging your miles correctly at the time of the trip, the IRS can disallow your entire deduction under the contemporaneous record rule.