How to Track Mileage for Taxes — Without Draining Your Battery or Your Privacy

Short answer: How to track mileage for taxes comes down to a habit rather than a tool: for every business trip, record the date, destination, business purpose, and miles driven close to when the trip happens. A paper logbook, a spreadsheet, and an app all qualify — the IRS requires a contemporaneous log, not an end-of-year estimate — and you also need your total annual mileage from odometer readings. No always-on GPS or bank connection is required.**

Automatic mileage trackers promise convenience, but many run GPS in the background all day, drain your battery, and stream your location and financial data to the cloud. That is a lot of surveillance for a simple deduction. This guide shows how to track mileage for taxes accurately, what the IRS actually requires, and how to do it privately.

What does the IRS require you to track?

The IRS requires a contemporaneous mileage log that records each business trip near the time it occurs. Reconstructing your mileage from memory at tax time does not meet the standard.

For every deductible trip, your log should capture:

• The date of the trip.
• The destination or the business purpose of the trip.
• The number of business miles driven.
• Your total annual mileage (business plus personal), usually from odometer readings at the start and end of the year.

You do not need to record the make of your car on every line, and under the standard mileage method you do not need gas or repair receipts. What matters is a consistent, dated, trip-by-trip record — the substantiation rules are set out in IRS Publication 463. Our guide to IRS mileage log requirements covers the exact fields and includes a free template.

Which trips count as business miles?

A trip counts as business mileage when the driving itself serves your trade or business. Knowing which trips qualify matters as much as the logging habit, because a log padded with personal miles is worse than a short, honest one.

These are business miles:

• Driving to a client, a job site, or a meeting.
• Driving between two work locations on the same day.
• Trips to buy supplies, ship an order, or visit the bank for business banking.
• Driving from a qualifying home office to a client, when your home is your principal place of business.

These are not:

• Your regular commute from home to a fixed workplace, which the IRS treats as a personal expense even for 1099 workers.
• The personal leg of a mixed errand — if you stop at a client on the way to the grocery store, only the business portion counts.

The distinction that catches most people is the commute rule, which is why whether your commute is tax-deductible is one of the most common questions solo drivers ask. Writing the business purpose next to each trip is what makes this defensible later: “client site visit — Acme” is a record, while “drove 24 miles” is a number you will not be able to explain in two years.

What are the main ways to track mileage for taxes?

There are three common methods for tracking mileage: a paper logbook, a spreadsheet, and a mileage app. Each has tradeoffs in accuracy, effort, and privacy.

Method	Accuracy	Effort	Privacy	Battery use
Paper logbook	Good if consistent	High (manual, easy to forget)	Total (nothing leaves paper)	None
Spreadsheet	Good	Medium	High if stored locally	None
Auto-GPS app (bank-connected)	High	Low	Low (cloud + location + bank)	High (background GPS)
Manual/on-device app	High	Low to medium	High (data stays on device)	Minimal

The right choice depends on how much you drive and how much you value privacy. Heavy drivers often want an app so they do not have to write down dozens of trips, but they do not have to accept an always-on GPS or a linked bank account to get that convenience.

Do you need an always-on GPS to track mileage?

No. You do not need an always-on GPS to keep a compliant mileage log. The IRS cares about an accurate, contemporaneous record of your business miles, not about how you captured the location data.

Always-on GPS tracking has real downsides for solo workers:

• It runs in the background and drains your phone battery throughout the day.
• It logs everywhere you go, including personal trips you would rather keep private.
• Many GPS apps sync that location history to the cloud.
• Some auto-trackers also require linking a bank account to categorize trips, which means sharing financial data.

A quick manual entry after each business trip, or a voice command as you finish a drive, produces the same deductible record without any of that surveillance. If you drive fixed routes, you can even save common trips and log them in a couple of taps.

How do you track mileage privately and accurately?

To track mileage privately, use a method that keeps your trip data on your own device and does not require a bank connection. Log each trip promptly so your record stays contemporaneous.

A simple, private workflow looks like this:

1. Note your odometer reading at the start of the year.
2. After each business trip, immediately record the date, destination, purpose, and miles.
3. Use a saved route or a voice command to speed up repeat trips.
4. Review your log weekly to catch anything you missed.
5. Note your odometer reading at year-end and total your business miles.

This approach keeps you compliant, protects your location and financial privacy, and avoids the battery drain of background GPS. The small amount of manual entry is the honest tradeoff for keeping your data yours.

How Keel makes private mileage tracking easy

Keel: Invoice Maker & Receipts is an on-device bookkeeping app for self-employed and 1099 workers who want accurate records without surveillance. You log trips manually or with Siri, and Keel stamps each trip at the IRS rate — 72.5 cents per mile for 2026 — so your records stay audit-stable even after the rate changes.

Keel is built around privacy. There is no always-on GPS running down your battery, no bank connection, no cloud sync, and no account to create. Your mileage lives encrypted on your iPhone, which is why the App Store lists it as “Data Not Collected.” Every entry goes into an append-only verifiable ledger, and you can export all of your data as a single file whenever you need it for taxes or an accountant. The honest tradeoff is a little manual entry, which is what lets Keel avoid tracking you.

Keel is free with unlimited invoices, receipts and mileage; Pro is a one-time $249.99 Lifetime purchase, not a subscription.

Track your miles without giving up your privacy — download Keel on the App Store.

Regional notes for the UK, Canada, and EU

The recordkeeping principle — a contemporaneous, detailed log — is broadly similar across countries, but the rates differ.

• United Kingdom: HMRC allows 45p per mile for the first 10,000 business miles and 25p thereafter under simplified expenses. Keep dated trip records. See GOV.UK on simplified expenses for vehicles.
• Canada: The CRA expects a logbook showing the date, destination, purpose, and kilometres of each business trip, plus a business-use percentage. Check CRA guidance for the current per-km rate.
• European Union: Requirements and per-kilometre rates vary by member state. Consult your national tax authority.

Frequently asked questions

How do I track mileage for taxes if I forgot to log trips? You can reconstruct some trips from calendar entries, appointment records, client invoices, and map history, and that corroborating evidence is what makes a reconstruction defensible. A contemporaneous log is still far stronger in an audit, and a log rebuilt purely from memory usually will not hold up. Going forward, record each trip the day it happens.

Do I need a mileage app, or is a notebook enough? A notebook is acceptable if you keep it consistently — the IRS does not require any particular tool, only an adequate record. The practical problem is human rather than legal: a notebook lives in the glovebox, and forgotten trips are lost deductions. At 72.5 cents per mile in 2026, ten forgotten 20-mile trips cost you a $145 deduction.

Does tracking mileage require sharing my bank account? No. Tracking mileage does not require a bank connection. Some automated apps ask for one so they can match trips against fuel purchases or categorize spending, but under the standard mileage method your deduction is calculated from miles and a rate, not from your transactions. You can keep a fully compliant log without linking any financial account.

Will a mileage app drain my battery? Only apps that run GPS continuously in the background tend to drain your battery, because they keep asking for your location even when you are not driving. Manual or on-device apps that you open to log a trip use minimal power. The setting to check is the app’s Location permission: “Always” means background tracking, “While Using the App” does not.

What is the easiest way to track business miles accurately? The easiest accurate method is to log each trip right after you finish it — by hand, by saved route, or with a voice command — so your record stays contemporaneous and complete. Pair that with a two-minute weekly review against your calendar, which catches trips you drove but never wrote down, and note your odometer at the start and end of the year.

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This article is general information, not tax advice. Consult a qualified tax professional.