Why Mileage Tracking Matters
For NEMT and fleet businesses, mileage is often your largest deductible expense. At 70 cents per mile in 2026, a vehicle driving 30,000 business miles generates $21,000 in deductions. But without proper documentation, you could lose it all in an audit.
IRS Requirements for Mileage Logs
The IRS requires "contemporaneous" records—meaning you must log trips at or near the time they occur. Required information includes:
For Each Trip:
1. Date - When the trip occurred 2. Destination - Where you went 3. Business Purpose - Why you went there 4. Miles Driven - Actual distance traveled 5. Starting Odometer - Beginning reading 6. Ending Odometer - Final reading
Manual vs. Automatic Tracking
Manual Tracking (Paper Logs)
Pros: - No technology required - No subscription costs
Cons: - Easy to forget entries - Prone to errors - Time-consuming - Difficult to audit
Automatic GPS Tracking
Pros: - Captures every trip automatically - Accurate to the tenth of a mile - Timestamps are automatic - Easy to classify trips - Audit-proof records
Cons: - Monthly subscription cost - Requires device installation - Privacy considerations
Business vs. Personal Classification
What Counts as Business Mileage:
- Patient transport trips - Driving to pick up a patient - Returning to base after a trip - Trips to the mechanic for vehicle maintenance - Bank deposits and business errands - Meeting with clients or partners
What Does NOT Count:
- Commuting from home to your office - Personal errands during work hours - Driving for personal reasons - First trip of the day from home (usually)
The "First Trip" Exception
If your home is your principal place of business, the first trip from home to a client/patient location IS deductible. This is common for NEMT operators who dispatch from home.
Multi-Vehicle Fleet Tracking
Managing mileage across multiple vehicles adds complexity:
Best Practices:
1. Assign vehicles to drivers - Know who drove what, when 2. Use consistent tracking methods - Same system for all vehicles 3. Reconcile monthly - Compare GPS data to odometer readings 4. Track maintenance mileage - Include trips to mechanics 5. Document vehicle swaps - When drivers use different vehicles
Vehicle-Specific Records
Maintain for each vehicle: - VIN and license plate - Purchase date and cost - Total miles driven (business + personal) - Business miles driven - Maintenance history - Fuel purchases
Common Audit Triggers
The IRS looks for these red flags:
1. Round numbers - "500 miles" every week looks suspicious 2. No personal use - Every vehicle has some personal use 3. Inconsistent records - Gaps in your logs 4. Mileage exceeds possibility - More miles than days × reasonable daily max 5. No supporting documentation - Mileage without trip details
How to Survive an Audit
If audited, you'll need to prove:
1. The trip actually occurred 2. It was for a legitimate business purpose 3. The mileage claimed is accurate
Supporting Documentation:
- Calendar entries showing appointments - Dispatch records - Patient transport logs - GPS tracking data - Fuel receipts (showing location)
FleetBooks Mileage Tracking
FleetBooks provides IRS-compliant mileage tracking with:
- Automatic trip detection - GPS captures every trip - Business/personal classification - Easy one-tap categorization - Multi-vehicle support - Track your entire fleet - Audit-ready reports - Export IRS-compliant logs - Odometer verification - Reconcile GPS with physical readings
Action Items
1. Choose a tracking method (we recommend automatic) 2. Set up tracking for all vehicles 3. Establish a classification routine 4. Review and reconcile monthly 5. Back up your records regularly
Remember: The best mileage log is one you'll actually use consistently. Automation removes the burden and ensures compliance.