Mileage Log Roll-Up
Total business miles, deductible at the published IRS standard rate, optional odometer cross-check.
Example
You enter
- Tax year 2025
- Trips (date,miles,purpose; one per line) date 2025-03-01, business miles 42, purpose Client visit, start odometer 12300, end odometer 12342, and 1 more
You get
- Trip count 2
- Total business miles 60
- Deductible amount $42
- Standard rate 0.7
- Total miles implied 61
- Personal miles implied 1
Checked against published worked examples from: IRS Pub. 463 / IRS Notice (annual standard mileage rates).
Details, formula, and sources
Formula or tableTotal business miles = sum(trip.business_miles). Deductible amount = total_business_miles * IRS_standard_rate(year). Optional odometer span cross-check.
Source and editionIRS standard mileage rate, annual notice (e.g., Notice 2024-08 for 2024). Per-year rate bundled in STANDARD_MILEAGE_RATES.
Free accessFree at irs.gov/tax-professionals/standard-mileage-rates.
What governsEstimate only. Tax law changes. Confirm with the current IRS publication or a licensed CPA before filing.
API field namestax_year, trips, trip_count, business_miles, deductible_amount, standard_rate, total_miles_implied, personal_miles_implied
- Standard rate vs. actual expense standard rate selected; actual-expense method (gas + maintenance + depreciation) is out of scopeIRS Pub 463 lets the taxpayer pick one method per vehicle per year