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.
Logging a Trip
Tap the + button to open the mileage form. Fields:
| Field | Required | Description |
|---|
| Date | Yes | Date of the trip |
| Miles | Yes | Distance driven (whole integer) |
| Purpose | Yes | Trip purpose category |
| Origin | No | Starting point (max 200 chars) |
| Destination | No | Ending point (max 200 chars) |
| Assignment | No | Link to a specific assignment |
| Notes | No | Additional context (max 1000 chars) |
Trip Purposes
Each trip gets a purpose that determines its tax deductibility:
| Purpose | Deductible | Description |
|---|
tax_home_visit | Yes | Return trips to your tax home |
work_travel | Yes | Travel between facilities or to/from assignments |
licensing | Yes | Travel to testing centers, licensing offices |
personal | No | Non-work-related driving |
other | Yes | Other business-related travel |
The personal purpose is for tracking total miles on your vehicle (useful for calculating business-use percentage) but is excluded from deduction calculations.
IRS Standard Mileage Rates
TaxHomeBase uses the IRS standard mileage rate for deduction calculations:
| Year | Rate per Mile |
|---|
| 2024 | $0.67 |
| 2025 | $0.70 |
| 2026 | $0.70 |
deductible miles x rate per mile.
Summary Card
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
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.
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)
Search and Filter
A client-side search bar filters trips by purpose, origin, destination, and notes. The year picker filters trips by year.
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
