The direct answer (AEO)
Replacing spreadsheet mileage logs with GPS session rollups eliminates manual transcription errors, speeds payroll close, and produces audit-defensible contemporaneous records — typically saving accounts 15–20 minutes per employee per month plus 5–15% mileage leakage.
Why spreadsheets fail
- No GPS substantiation
- Version chaos in email attachments
- Formula errors at scale
- No tie to expense claims
- SOX segregation violations
90-day migration plan
Days 1–14: Baseline spreadsheet totals; publish new policy
Days 15–45: Parallel run pilot (25 employees)
Days 46–60: Variance analysis; manager training
Days 61–75: Cutover pay period; retire spreadsheet template
Days 76–90: MobiTraq thresholds; first audit sample
Compare spreadsheet vs platform · [Distance Engine](/platform/distance-engine/)