Mileage guide
How to Keep a Mileage Log Without GPS
By FlatMile ·
General US federal recordkeeping information, not individual tax advice. Tax treatment depends on your circumstances; consult a qualified adviser for your claim.
At a glance
You can keep a mileage log without a GPS trace by recording journeys manually, using odometer readings to establish distance and adding the date, destination and purpose. The key is an understandable record with supporting facts. Turning off GPS does not remove the need to document what the driving was for.
For US business records, IRS Topic 510 points drivers to records supporting business car expenses; it does not prescribe a particular tracking app. Check an employer's separate policy if you are claiming reimbursement.
Set up a repeatable parked-car routine
Keep a notebook or a simple digital log where you can reach it before departure and after parking. Choose one distance unit for that vehicle's record. Give the vehicle a stable label so readings cannot be confused with another car.
Before driving, note the date, departure location and starting odometer. At arrival, add the destination, ending odometer and reason for the journey. Calculate the distance as the ending reading minus the starting reading. Record only when safely parked; catching up at the next safe stop is preferable to interacting with a phone while moving.
Use a purpose such as “collect components for repair ticket 61” instead of “work.” The business-purpose examples show how to make short notes useful.
A fictional day recorded without GPS
These entries illustrate measurement and categorization. They do not establish that the particular journeys qualify for a deduction.
| Journey | Start odometer | End odometer | Distance | Note |
|---|---|---|---|---|
| Workshop to supplier | 31,200.0 | 31,208.4 | 8.4 mi | Collect parts for ticket 61 |
| Supplier to workshop | 31,208.4 | 31,216.6 | 8.2 mi | Return with parts |
| Workshop to personal errand | 31,216.6 | 31,221.0 | 4.4 mi | Personal |
The two assumed business segments total 16.6 miles. The observed interval totals 21.0 miles. Keeping the 4.4-mile personal segment separate avoids confusing “distance the vehicle moved” with “distance allocated to work.”
Photographs of readings can help you transcribe numbers accurately, but check that they show the correct vehicle and date. Keep the notes explaining the journey; a photograph of an odometer alone does not describe its purpose.
Handle a forgotten reading without hiding the gap
If you miss the arrival reading, do not use a later odometer value after additional driving as though it were the original. Label what happened and look for supporting information. A modern map estimate may help investigate a route, but it is not a contemporaneous measurement of that journey.
Keep unresolved distances separate while reviewing them. For older gaps, follow the recovery worksheet. A consistent new routine is still useful even when an earlier entry needs more work.
Decide what “without GPS” means for your device
Manual logging and device privacy are different choices. A paper log requires no phone location access. A manually entered phone record may still contain addresses and other sensitive details you choose to add.
Apple explains how app permissions work in its Location Services guide. Review those permissions if you do not want an app using location. Do not expect location-based automatic capture to continue unchanged after removing its access.
The free website template can hold a manual record. If using FlatMile, manual and automatic logging are free, while captured-drive details/classification and app PDF/CSV exports require a subscription or eligible trial. Confirm your chosen routine includes the eventual report and backup you need.