Every business mile you drive carries a dollar value. Most drivers never claim it, for the dull reason that nobody wrote it down. Learning how to track mileage for taxes is less about tax knowledge than about having a system that survives a whole year.
2026 makes that harder than usual, because the IRS moved the standard mileage rate in the middle of the year. A log that does not distinguish January trips from August ones now costs you money at filing time.
Key takeaways
- The business rate is 72.5 cents a mile through 30 June 2026 and 76 cents from 1 July. Your log has to separate the two halves.
- Self-employed people, gig workers and small business owners claim mileage. Most W-2 employees cannot, and should pursue reimbursement instead.
- Choose standard rate or actual expenses before the year starts — which you pick first can restrict switching later.
- Rounded numbers, reconstructed logs and vague purposes are what draw attention to a return.
- Keep the records at least three years from filing, and six if income might have been understated.
What a Business Mile Is Worth in 2026
The standard mileage rate is a single per-mile figure that stands in for the whole running cost of the car — fuel, insurance, servicing, depreciation. Take it and you are not tracking individual fill-ups or the invoice from Way Auto Repair separately; the rate is already carrying them.
It changed mid-year in 2026, which is unusual and easy to miss:
| Purpose | 1 Jan – 30 Jun 2026 | 1 Jul – 31 Dec 2026 |
|---|---|---|
| Business use | 72.5 cents/mile | 76 cents/mile |
| Medical, and moving for qualifying military | 20.5 cents/mile | 23.5 cents/mile |
| Charitable driving | 14 cents/mile | 14 cents/mile |
Ten thousand business miles driven in the second half of the year is a $7,600 deduction. Drive the same distance without a log and it is worth nothing, because there is nothing to substantiate it with.
The practical consequence of a mid-year change is that your log needs dates, not just distances. A year-end total of 10,000 miles cannot be valued without knowing how it split across 30 June. How to keep an IRS mileage log covers what each entry has to contain, field by field.
Who Can Actually Claim It
This is worth settling before you build any system, because for a large group of drivers the answer is that the deduction is not available.
If you are self-employed — sole trader, freelancer, gig worker, small business owner — business mileage goes on Schedule C and reduces your taxable income.
If you are a W-2 employee, you generally cannot deduct unreimbursed business mileage. The deduction for unreimbursed employee expenses was suspended from 2018, and that suspension has since been made permanent rather than expiring after 2025. A few narrow categories are still able to claim — Armed Forces reservists, qualified performing artists, fee-basis state or local government officials, and people with impairment-related work expenses — but they are exceptions, not the rule. If you are on payroll, the productive move is to push for reimbursement rather than a deduction. Getting the most from your mileage reimbursement is the relevant guide there.
Keep a log either way. An employee needs one to be paid; the difference is only who ends up reading it.
Which Trips Qualify
Generally deductible:
- Driving between two work locations in the same day.
- Client meetings, site visits, supply runs.
- Trips to the bank, the post office or a supplier for the business.
- Driving to a temporary work location outside your normal area.
Generally not:
- The regular commute from home to your main workplace.
- Personal errands before or after a work trip.
- The personal portion of a mixed trip.
Where a single drive does both, log the business part honestly rather than rounding the whole thing up. That one habit protects the rest of the log if any single entry is ever questioned. The boundary cases get their own treatment in business vs personal mileage.
Choosing Your Method Before the Year Starts
There are two ways to claim vehicle costs, and the choice is worth making deliberately in January rather than discovering in April.
The standard mileage rate multiplies business miles by the IRS figure. The actual expense method totals what the car really cost — fuel, insurance, repairs, depreciation — and claims your business-use percentage of it.
Most high-mileage drivers in an ordinary car do better on the standard rate, and it is far less work. An expensive vehicle, or a thirsty one, sometimes does better on actual expenses. The catch is that the method you use in the vehicle’s first year of business use affects whether you can switch later, so this is a decision with a tail. Standard mileage rate vs actual vehicle expenses runs the comparison properly, and it is worth reading before committing a vehicle to one or the other.
The Year, Step by Step
1. Pick the method and the tool in January. Switching tools mid-year leaves a seam in the record that is awkward to explain.
2. Log each trip the day you drive it. The IRS values contemporaneous records. A log assembled in April from memory carries much less weight than one written as it happened.
3. Separate business from personal as you go. Not in a sorting session at year end.
4. Record the odometer on 1 January and 31 December. These two readings anchor the year and make your business percentage checkable.
5. Keep toll and parking receipts alongside the log. They are deductible on top of the standard rate. If you already earn cashback on parking through Way, those records are one less thing to chase.
6. Reconcile monthly. A short monthly check finds the missing trips while you can still identify them.
7. Watch the 30 June boundary. In 2026 specifically, trips either side of it are worth different amounts. Make sure your export separates them rather than handing your accountant one annual number.
8. Keep the records after filing. Three years is the working baseline, six if income may have been significantly understated.
What Draws Attention to a Mileage Claim
A handful of patterns are responsible for most trouble, and none of them are hard to avoid:
- Rounded totals. Trips logged as flat 10s, 20s and 50s read as estimates. A real log produces 14.3 miles.
- Reconstructed logs. Rebuilding a year from a calendar in April is not a fix, it is the problem.
- Vague purposes. “Business” or “meeting” says nothing. Name the client or the task.
- Missing odometer readings. Without a start and end for the year, the total has nothing to sit against.
- Mixed personal trips. One grocery run logged as business undermines the entries either side of it.
- Long gaps. Three missing months make a log look incomplete even when everything in it is accurate.
- A business percentage that never moves. Exactly 80% every year, on a car that also does the school run, invites the question of where the number came from.
How Long to Keep the Records
Plan on three years from the filing date as the baseline, since that is the general period in which a return can be examined. Stretch it to six if there is any chance income was significantly understated for that year. Digital logs make this easy — nothing takes up a filing cabinet, and an export you can still open in four years is worth more than a notebook you might find.
Doing It Without the Admin
The honest problem with manual tracking is not that it fails to satisfy the IRS. It is that most people stop doing it around March.
The Way mileage tracker logs each drive by GPS, sorts business from personal with one tap, and exports a report your accountant can work from:
- Automatic logging, with no trip to remember to start.
- One-tap business or personal sorting, while you still remember the trip.
- Dated, exportable records — which is what makes the mid-year rate split workable.
- Several vehicles under one account.
- Odometer and trip history you can go back to.
If you drive for a business with several people on the road, Way’s mileage tracker for teams centralises it, which is a different job from keeping your own log.
Frequently Asked Questions
Is a spreadsheet good enough, or do I need an app?
A spreadsheet satisfies the requirements if you genuinely update it every day and never miss a trip. Most people do not manage that for twelve months, which is the real argument for an app rather than any difference in what the IRS accepts.
Can I claim mileage as a W-2 employee?
Generally no. The unreimbursed employee expense deduction is no longer available to most employees, and that is now permanent rather than due to expire. Narrow categories — Armed Forces reservists, qualified performing artists, fee-basis state or local officials, impairment-related work expenses — are the exception. Ask about reimbursement instead, and keep a log regardless.
I forgot to log a few weeks. What should I do?
Fill in what you can support from calendar entries, receipts or platform history, then return to daily logging immediately. A short, clearly reconstructed gap is much less risky than months of estimates.
Do I have to track personal miles too?
Only business trips need entry-level detail. Your 1 January and 31 December odometer readings cover total mileage, and that total is what a reviewer uses to sanity-check your business percentage.
How does the mid-year rate change affect my return?
Business miles are valued at 72.5 cents through 30 June and 76 cents from 1 July, so the two halves are calculated separately and added. A log without dates cannot do this, which is why an annual total on its own is not enough in 2026.
Can I switch from actual expenses back to the standard rate?
It depends on the method used in the vehicle’s first year of business use. Starting with the standard rate generally keeps more options open; starting with actual expenses can limit later switching. Worth deciding with your accountant rather than by default.
How long should I keep a mileage log?
At least three years from filing, and six where income might have been significantly understated. Keep the export, not just the app account.
What if I drive for more than one business?
Keep the mileage separated by business rather than in one pool. Each trip still needs its date, start and end points, purpose and distance — separating them is what lets you substantiate one without dragging the other into it.
Where This Leaves You
Tracking mileage for taxes is a recordkeeping habit rather than a tax skill. The method matters far less than whether you are still using it in November.
Record trips while they are fresh, keep business and personal apart, note the odometer at both ends of the year, and make sure your log knows which side of 30 June each trip fell on. That is most of it. The figures in this article are current for the 2026 tax year, but rates and rules change — and anything unusual about your own situation is worth an hour of a tax professional’s time rather than a guess.
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