Turn business miles into a reimbursement figure
Enter the driving three ways (a total, a trip-by-trip log, or odometer readings), take off any commuting miles, apply the rate, and add the tolls and parking that the standard mileage rate does not cover. Published IRS standard rates are offered as dated presets you can tap, because the right rate is the one for the year the miles were driven, and anything else is your employer’s policy rate, entered by you.
Disclaimer: This calculator gives estimates for general information only. It is not financial, medical or other professional advice, and it is not tax advice. Reimbursement is governed by your employer’s policy; the tax treatment of business mileage follows the current IRS rules, which change: confirm the rate and rules for your year before filing or claiming.
What this calculator does
Mileage reimbursement is the simplest expense there is (miles times a rate) wrapped in rules that decide which miles count and what else may ride along. This page handles the whole claim: distance entered as a period total, as an odometer difference, or as a trip-by-trip log you can download for your records; commuting miles removed before the rate is applied; tolls and parking added on top, because the standard mileage rate deliberately excludes them; and any advance already received taken off the end, so the final figure is the amount still due, not the amount originally earned.
How to use it
- Pick the rate for the year the miles were driven. The IRS standard mileage rate is set per year and sometimes changes mid-year. The presets here are the published full-year rates for 2023, 2024 and 2025 (65.5, 67 and 70 cents). If you are claiming for a different year, or your employer pays its own policy rate, type that rate in: the employer’s rate is what you will actually be paid, whatever the IRS figure says.
- Commuting is not business mileage. The drive from home to your regular workplace is commuting in US tax law, and most employer policies follow the same line. Business mileage starts when the driving is for the business: to a client, a site, a second work location. If your odometer or total includes the home-to-office portion, subtract it in the commuting field rather than quietly claiming it.
- The log is not decoration. For a tax deduction, and under most accountable plans, the record needs the date, the destination, the business purpose and the miles, kept at the time, not reconstructed at year end. The trip-by-trip mode builds exactly that record and downloads as a text file. Odometer readings at the start and end of the year are the other half of a defensible file.
- Extras: tolls and parking only. Under the standard mileage method, the per-mile rate already stands in for fuel, oil, tyres, maintenance, insurance and depreciation. Adding those receipts on top double counts them and is the first thing an auditor or a finance team strikes out. Business tolls and parking fees are the recognised exception: they are claimed in addition, which is why they have their own fields here.
- Reimbursement and deduction are different doors. If your employer reimburses you under an accountable plan, the money is not taxable income and there is nothing left to deduct. If you are self-employed, or claiming a deduction the law currently allows you, the same miles-times-rate arithmetic values the deduction. This page computes the value either way; which door it walks through is a tax question the page does not decide.
How it is calculated
- Miles driven: as entered (total mode, doubled if you mark the miles one-way), or the sum of the log’s trips (each trip doubled if marked round trip), or end odometer minus start odometer.
- Reimbursable miles = miles driven – commuting miles. If commuting exceeds the miles driven, the page stops and says so rather than inventing a negative claim.
- Mileage amount = reimbursable miles x rate per mile, rounded to cents.
- Total due = mileage amount + tolls + parking – advance already received.
- Comparison line: when your rate is not the IRS 2025 standard rate, the mileage amount is also shown at 70 cents, so the cost of a lower policy rate is visible in dollars, not just cents per mile.
Worked examples
The simple claim. 250 business miles at the 2025 IRS rate of $0.70 is $175.00 of mileage; add $12.50 of tolls and the total due is $187.50.
The logged week. Three trips in the log: 40 miles one-way, a 65.5 mile round trip (counted as 131), and 20 miles one-way, is 191 miles driven. Take off 11 commuting miles and 180 reimbursable miles at $0.70 come to $126.00. The log, not memory, is what makes this claim boring to audit.
The odometer month. Odometer from 45,200 to 45,890 is 690 miles; less 30 commuting miles is 660. At the 2024 rate of $0.67 the mileage is $442.20; against a $100 advance, the amount still due is $342.20. At the 2025 rate the same miles would be $462.00, which the comparison line shows: the year a rate belongs to is worth real money.
The round trip. A 60 mile one-way run to a client, entered as one-way and doubled, is 120 reimbursable miles. At a 60 cent policy rate that is $72.00; at the 2025 IRS rate it would be $84.00, and the $12 gap is the employer’s policy choice priced in the open.
Reading your result
Read the reimbursable miles line before the money: it is where claims go wrong. If it is much lower than the miles you drove, the commuting subtraction is doing heavy lifting and deserves a second look: a home-based worker’s first trip of the day is often business mileage in full, because there is no regular office to commute to, and a worker driving to a temporary site beyond their usual area may count more than the simple commute rule suggests. The field exists so the distinction is made deliberately, not by default.
Then read the comparison line if it appears. A policy rate below the IRS standard is legal and common, but over a year of driving the gap is a real, countable transfer from the driver to the employer, and this page makes it a number you can raise with facts. A policy rate above the standard has a tax wrinkle worth knowing: under an accountable plan, the excess over the federal rate can be treated as taxable wages, which is a payroll question, not a calculator one.
Limitations
- Rates are dated. The presets are the IRS standard mileage rates for 2023, 2024 and 2025 as published. Rates for other years, mid-year changes, and the special rates for medical or charitable driving are not presets here; enter them manually after checking the current IRS publication.
- US framing. The commuting distinction, the accountable plan rules and the standard mileage method are US federal concepts. Other countries run their own approved mileage rates and rules (the UK’s AMAP rates, for instance) and this page’s arithmetic travels but its rules text does not.
- The page does not judge business purpose. It trusts your classification of miles as business or commuting. That classification, documented at the time, is the substance of any claim.
- Actual-cost method not modelled. Some taxpayers may use actual vehicle expenses instead of the standard rate; the two methods cannot be mixed for the same vehicle in the same period, and switching has its own rules. This page is the standard-rate method only.
Frequently asked questions
What is the IRS standard mileage rate?
It is the per-mile figure the IRS publishes each year to value business driving without tracking every cost: 70 cents for 2025, 67 cents for 2024 and 65.5 cents for 2023, the rates preset on this page. It is built to cover the fixed and running costs of a car: fuel, maintenance, tyres, insurance, registration and depreciation. It is used both by employees being reimbursed under accountable plans and by the self-employed valuing a deduction, and it changes as driving costs change, which is why the year matters.
Can I claim fuel on top of the mileage rate?
No, and this is the most common mileage error. Fuel is inside the per-mile rate, along with the other running costs. Claiming both the standard rate and fuel receipts double counts the same cost, and claims get adjusted for exactly that. What does sit legitimately on top is business tolls and parking, which is why those are the only extras this calculator offers fields for.
Is my drive to work reimbursable?
Ordinary commuting, home to your regular workplace and back, is not business mileage for US federal purposes and most employer policies match that. The exceptions live at the edges: a home office that is your principal workplace can make the first trip business mileage; travel to a temporary work location outside your usual area is often countable; travel between two work sites in a day almost always is. The commuting field on this page exists so you make the call case by case rather than claiming or surrendering everything by habit.
What records do I need to keep?
For each trip: the date, where you went, why (the business purpose), and the miles. Plus odometer readings that bracket the year if you want the business-use percentage provable. The record should be made at the time, not rebuilt later; the trip-by-trip mode here produces exactly that log and lets you download it, which is more than most mileage claims have behind them when they are questioned.
Related calculators
Method: standard mileage method (reimbursable miles x the applicable rate) plus business tolls and parking, less advances, with the published IRS rates for 2023 to 2025 offered as dated presets, exactly as defined on this page. Last reviewed: 13 October 2026.