6 min · 2026-07-02

Contemporaneous Mileage Log: Definition

A contemporaneous mileage log records trips at or near the time of travel — GPS shift sessions satisfy IRS substantiation vs end-of-month reconstruction.

Definition

Contemporaneous mileage log captures date, miles, and business purpose near trip time. GPS platforms auto-generate from shift sessions.

IRS recordkeeping · [IRS compliant guide](/resources/irs-compliant-mileage-tracking-guide/)

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