The mileage deduction is your business miles multiplied by the IRS standard mileage rate for the period you drove them — and 2026 has two rates, 72.5 cents a mile for the first half of the year and 76 cents for the second. The halves are figured separately and added, and business parking fees and tolls come on top. The Mileage Deduction Calculator runs both halves on your log; this guide explains who qualifies, what the rate replaces, and the records the deduction stands or falls on.
Who the deduction is for
The standard mileage rate is the self-employed driver's method: sole proprietors, freelancers, and gig workers deduct business miles on Schedule C, where the deduction lowers both income tax and self-employment tax. The line the IRS draws is between commuting and business travel. Home to a regular workplace is commuting and never deductible; workplace to a client, job site, or supplier is business travel and every mile counts. That makes the home-office rule decisive for freelancers: if your home is your principal place of business, it is your workplace, and the trip from your front door to a client is business travel. W-2 employees are on the other side of the line under current law — the unreimbursed employee expense deduction is suspended, so employer-required driving with no reimbursement produces no federal deduction. Medical and charitable driving use their own lower rates and generally require itemizing; the archive linked below carries every rate.
What the rate replaces — and what it does not
One IRS figure stands in for the whole cost of owning and operating the car: fuel, insurance, maintenance, tires, and depreciation are all bundled into the cents per mile, which is why no receipts for those costs are needed on the standard-rate method. (Of the first-half business rate, 35 cents is the depreciation component, the figure the IRS publishes for basis calculations if the car is later sold.) Two things sit outside the bundle and are deducted on top of it: business parking fees and tolls. The alternative — tracking every actual expense and prorating by business use — can win for an expensive, thirsty vehicle driven fewer business miles, but the methods cannot be switched freely, and actual expenses demand the full paper trail the standard rate exists to avoid.
Worked example — 10,000 business miles across the 2026 split
Chris is a self-employed photographer in Texas whose home studio is his principal place of business. His 2026 log shows 4,800 business miles in the first half of the year and 5,200 in the second, plus $120 of client-site parking and tolls:
- Jan–Jun: 4,800 × $0.725 = $3,480.00
- Jul–Dec: 5,200 × $0.76 = $3,952.00
- Mileage deduction: $3,480.00 + $3,952.00 = $7,432.00 — an average of 74.3 cents a mile across the year
- Plus parking and tolls: $7,432.00 + $120.00 = $7,552.00 total deduction
A deduction is not a refund — what it is worth depends on the taxes it reduces. On the full tool's savings method, at a 22% federal marginal bracket the $7,552.00 saves $1,661.44 of income tax, and because a Schedule C deduction also lowers self-employment tax (15.3% on 92.35% of the amount), it saves a further $1,067.06 of SE tax — $2,728.50 of estimated tax saved, before any state tax (Texas has none). Notice what the split did: figuring the whole year at the first-half rate would have understated the deduction by $182.00 — the second half's extra 3.5 cents on 5,200 miles. A single-rate calculator is wrong for 2026 no matter which rate it picks.
Try it with your own numbers
This mini-calculator is prefilled with the worked example above and runs the business-rate half of the full tool. The full calculator also handles the medical and charitable rates and estimates the tax the deduction saves.
Result
—
| Jan–Jun deduction (miles × 72.5¢) | — |
| Jul–Dec deduction (miles × 76¢) | — |
| Mileage deduction | — |
| Plus parking fees and tolls | — |
Open the full calculator — the Mileage Deduction Calculator runs the complete version of this calculation.
The log is the deduction
Every figure above rests on the record behind it. IRS Publication 463 requires the same four elements for vehicle expenses as for other travel costs: the date of the trip, the destination, the business purpose, and the miles — recorded at or near the time, not reconstructed in April. A mileage app, a notebook in the console, or a weekly odometer photo all work; what matters is that the record is contemporaneous. Two habits make the log audit-proof rather than merely present: record the odometer at the start and end of the year (which bounds total miles, so business miles can be checked against them), and log personal detours as personal — a log that claims every mile was business is the one that gets disbelieved in full.
Where the deduction lands at tax time
On Schedule C the deduction reduces net profit, and net profit is the input to two further calculations this site runs: the self-employment tax figured by the Self-Employment Tax Estimator, and the year's total that the Quarterly Estimated Tax Calculator splits into four payments. That ordering is why mileage is worth recording weekly rather than totalling in December — the quarterly payments due during the year are estimated from a profit figure the miles have already reduced, and an April surprise usually traces back to a deduction that existed all year but was never counted until filing.
For educational and planning purposes only — not professional tax advice. This guide explains the 2026 standard mileage method with a simplified example (business miles only, one vehicle, no method switching). It is not professional tax advice. Verify the current rates at IRS.gov and your eligibility and records against IRS Publication 463, and review your return with a qualified tax professional.