Hi Andrew,
The reason you can't edit your mileage once it has been tracked is that QuickBooks restricts changes to GPS-logged data in order to protect the integrity of the record. By locking these trips, the app ensures you have a verified audit trail that meets tax authority standards (such as HMRC or IRS), which makes your claims much more reliable in the event of a review.
The QuickBooks Sole Trader mobile app uses your smartphone's GPS to automatically track mileage based on your movement on a map. It records start and stop points, calculates the distance traveled, and logs trips in your account.
Mileage tracking relies on GPS data rather than odometer readings because it provides accurate and verified information required for tax purposes, including route details and trip locations.
If you have any further questions, please let us know. We're here to help you.
