Mileage
Per-trip business miles.
Edit at /mileage. Each trip has a date, optional vehicle, business miles, and an optional
purpose. The tax engine sums all trips for the year and multiplies by the year's IRS standard
mileage rate (see tax engine).
Rate by year
- 2025 — $0.70/mile (IRS Notice 2024-)
- 2026 — $0.725/mile (placeholder until IRS publishes the official rate)
Numbers are seeded in packages/tax/src/config/{year}.ts. If the remote tax-data mirror is
configured, it overrides the seed.
SE-start gating
Trips dated before your profile.se_start_date are excluded from the deduction but stay in your
log. The dashboard surfaces an "excluded" count so the discrepancy isn't silent.
CSV
CSV record_type = mileage. See the CSV format reference. The
vehicle_id column is optional — trips without one still count toward the deduction; they're
just not attributable to a specific vehicle in your records.