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The Mileage page tracks your work-related driving for tax deductions. The IRS requires contemporaneous (at-the-time) mileage logs to substantiate vehicle expense deductions — TaxHomeBase helps you build that record.
Mileage page showing trip cards with purpose badges, summary card with total miles and estimated deduction

Log trips with purpose tracking, IRS rate calculations, and deductibility badges.

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Logging a Trip

Tap the + button to open the mileage form. Fields:

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Trip Purposes

Each trip gets a purpose that determines its tax deductibility:
The personal purpose is for tracking total miles on your vehicle (useful for calculating business-use percentage) but is excluded from deduction calculations.

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IRS Standard Mileage Rates

TaxHomeBase uses the IRS standard mileage rate for deduction calculations: Your deduction is calculated as: deductible miles x rate per mile.

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Summary Card

Mileage form showing fields for date, miles, purpose, origin, destination, and assignment

The mileage form captures date, miles, purpose, origin, destination, and optional assignment link.

The summary at the top of the page shows:
  • Total miles — All miles logged for the year
  • Estimated deduction — Deductible miles x IRS rate
  • IRS rate — Current year’s standard mileage rate

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Deductibility Badges

Each trip card shows whether the trip is deductible based on its purpose. The mileage summary breaks down deductible vs. non-deductible miles and trips by purpose.

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Actions on Trip Cards

  • Expand — View origin, destination, notes, and linked assignment
  • Edit — Modify any field
  • Delete — Soft delete with 5-second undo toast
  • Duplicate — Open a pre-filled create form (handy for recurring routes)

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Search and Filter

A client-side search bar filters trips by purpose, origin, destination, and notes. The year picker filters trips by year.

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Integration with Other Features

Mileage data flows into several other parts of TaxHomeBase:
  • Tax Estimate — Mileage deduction included in itemized total (1099) or tracked for state deductions (W-2)
  • Assignment Profitability — Linked mileage counted in per-assignment expenses
  • Tax Home Analysis — Visit mileage (tax_home_visit purpose) counted in tax home maintenance costs
  • Export — Mileage summary row in PDF, dedicated “Mileage Log (CSV)” export option