Tracking mileage properly: apps, logs, and what the IRS actually requires

For most drivers, mileage is the deduction — at 70 cents per mile (the 2025 IRS standard rate), 15,000 business miles shelters $10,500 of income, worth roughly $3,000+ in avoided tax for a typical gig worker. It's also the deduction the IRS disallows most readily, because the rules demand contemporaneous records and most people show up with a guess. The gap between 'I drove a lot' and a compliant log is the difference between keeping that $3,000 and losing it plus penalties.

What the IRS actually requires

The standard is a contemporaneous log — records made at or near the time of driving, not reconstructed in April. For each business use, you need the date, miles driven, and business purpose, plus your vehicle's total annual mileage (odometer readings at January 1 and December 31 make this trivial). 'Contemporaneous' is the word audits turn on: a tidy spreadsheet created the week before your audit is worth almost nothing; a messy-but-daily log is gold.

• Every business mile counts, not just miles with a passenger or order in the car: driving to a hot zone, between pickups, and to the restaurant all qualify while you're working with the app on.
• Commuting doesn't count — but gig drivers working from home generally start business miles when they head out to work the apps. Gray areas exist; log honestly and consistently.
• The app's dashboard miles are not enough: platforms often report only on-trip miles, undercounting your real business mileage by 30–50%.
• One log covers all platforms — miles don't care which app you were serving.

The three ways to keep a log

1. Automatic tracking apps (MileIQ, Everlance, Stride, Hurdlr, and similar): GPS-detect every drive; you swipe to classify business vs. personal. Best for most people — the log is contemporaneous by construction.
2. Manual log or spreadsheet: odometer start/end and purpose per shift. Free and fully compliant if you actually do it daily — the failure mode is week three.
3. The hybrid: a shift-note habit (photo of the odometer at shift start and end, note in your phone) transcribed weekly. Clunky but audit-worthy.

Standard mileage vs. actual expenses — and why the log still rules

The standard mileage rate bundles gas, maintenance, insurance, and depreciation into one per-mile figure; the actual-expense method deducts real costs times your business-use percentage instead. Efficient-car drivers usually win with the standard rate; expensive or gas-hungry vehicles sometimes favor actual expenses. Here's the part people miss: both methods require the mileage log — actual expenses needs it to prove your business-use percentage. There is no record-keeping shortcut, only a choice of arithmetic. (Also: use standard mileage in a car's first business year if you ever want the option later.)

The bottom line

Mileage is likely your largest deduction and the easiest to lose: track every business mile with an automatic app or a genuinely daily log, capture year-start and year-end odometer readings, never trust the platform's undercounted trip miles, and keep the records as if the audit letter already exists. Ten seconds a day defends thousands of dollars a year — no other habit in gig work pays that rate.

A worked example: what a compliant log is worth

A full-time delivery driver logs 21,500 business miles in 2025. At the standard rate of 70 cents per mile, the deduction is $15,050. Against a gross of $41,000, that single log drops net profit to about $25,950 before other expenses, cutting self-employment tax by roughly $2,127 and income tax by perhaps $1,800 more — call it $3,900 of real money for the price of an app subscription and a habit. Now run the audit scenario: the driver with a contemporaneous app log keeps every dollar. The driver who estimated miles in April from memory, with no dates, no destinations, and a round number, routinely loses most of the deduction plus penalties, because the tax code specifically requires substantiation for vehicle expenses and auditors know exactly how weak reconstructed logs are.

Where drivers lose miles — and where they overreach

The two failure modes are opposites: leaving legitimate miles unlogged, and claiming miles the rules do not allow. Both are expensive, one in April and the other in an audit. The boundaries below cover the cases that trip people up most.

• Miles between deliveries and while repositioning with the app on and intent to work generally count — often a third of total business miles.
• The drive from home to your first working area is commuting and does not count, unless you qualify for a home office as your principal place of business.
• Personal detours in the middle of a shift must be carved out, which is why automatic trip classification beats odometer math.
• Choosing the standard mileage rate the first year a car enters service preserves your right to switch methods later; starting with actual expenses locks you out of the standard rate for that car.
• Round numbers and identical daily entries are audit bait — real logs are messy, and that mess is what credibility looks like.

Set the tracking app to auto-detect trips, spend five minutes each Sunday classifying the week, and export a backup quarterly. That routine survives phone upgrades, app shutdowns, and three-year-old audit letters — the three events that have destroyed more mileage deductions than any auditor ever has.