Fuel Receipt Reimbursement vs. Mileage Reimbursement: Which Actually Holds Up?

If your company reimburses employees for driving their own car on the job, there are really only two ways to do it: pay back what they spent on gas, receipt by receipt, or pay a per-kilometre/per-mile rate for the business driving they actually did. They sound like two versions of the same idea. They aren't. One tracks what the employee spent. The other tracks what the employee did for you. Only one of those is actually what you're trying to reimburse.

What fuel receipt reimbursement actually measures

When an employee hands you a gas receipt and asks to be paid back, that receipt tells you exactly one thing: how much fuel they bought, on that date, at that station. It does not tell you:

• Whether that tank of gas was used for the client visit you're reimbursing, a personal errand, or both

• How far they actually drove for work that week, month, or fill-up cycle

• Whether their vehicle gets 6L/100km or 12L/100km — two employees driving the identical business trip in different vehicles submit wildly different receipt amounts for the same work

That last point is the one employers underestimate most. Fuel receipt reimbursement doesn't reimburse business travel — it reimburses whatever vehicle the employee happens to drive, and how efficiently it burns fuel. An employee in an older SUV gets paid more for the same client visit than an employee in a compact sedan, for reasons that have nothing to do with the work.

What mileage reimbursement actually measures

A per-km or per-mile rate — the CRA and IRS both publish one every year — is built to represent the full cost of operating a vehicle for business use: fuel, plus wear, insurance, and depreciation, averaged out. Reimbursing business kilometres or miles driven means you're paying for the work, not for the tank.

	Fuel receipt reimbursement	Mileage-rate reimbursement
What it measures	Fuel purchased	Business distance driven
Consistent across vehicles	No — efficiency varies by vehicle	Yes — same rate regardless of vehicle
Separates business from personal use	Not without a separate mileage log	Yes, by definition (rate applies to business km/mi only)
Admin effort	Manual receipt collection and review, every claim	Can be automated with a verified trip log
Substantiation for audit purposes	Weak on its own — a receipt proves a purchase, not a business trip	Standard method CRA/IRS both explicitly recognize

The rates, if you're reimbursing by distance

CRA 2026: $0.73/km for the first 5,000 km driven for business, $0.67/km after that ($0.04 more per km in the territories). IRS 2026: $0.725/mile (72.5¢) for business use. Both are updated annually — always confirm the current published rate before setting or updating a reimbursement policy, since last year's figure is a common source of quiet drift on company intranets and policy PDFs.

Why this matters more than it sounds like it should

Most companies that reimburse by fuel receipt didn't choose it as a deliberate policy — it's what was easiest to start with, years ago, and nobody's revisited it since. The cost of that isn't dramatic. It's a slow accumulation of small unfairness (efficient-vehicle drivers subsidizing inefficient ones), real admin hours spent opening envelopes and cross-checking gas station names against expense reports, and a reimbursement file that, if anyone ever asked "how do you know this was for work," doesn't have a great answer.

Where this goes from here

Switching from receipt-based to mileage-based reimbursement is a policy decision, but making it work without adding more admin burden than it removes depends on how the business mileage actually gets tracked. A verified, automatic mileage log solves the part manual reimbursement never could: proof the distance was actually driven for work, not just that gas was bought.

FAQ

Is fuel receipt reimbursement legal instead of paying a mileage rate?

Generally yes, but it comes with tax and substantiation considerations that a mileage-rate reimbursement doesn't — see the next post in this series on the tax treatment specifically. Confirm your approach with your accountant or tax advisor.

Why does vehicle efficiency matter for reimbursement fairness?

Because a fuel receipt reflects what a specific vehicle burned, not what the trip cost in a standardized sense — two employees can make the identical business trip and submit very different receipt totals purely based on their car's fuel efficiency.

What's the current CRA/IRS mileage rate?

CRA 2026: $0.73/km for the first 5,000 km, $0.67/km after (+$0.04/km in the territories). IRS 2026: $0.725/mile. Confirm current rates before publishing or updating a policy, as they change annually.

Do we need a mileage log if we already use fuel receipt reimbursement?

If you want a defensible link between what you're paying and actual business use, yes — a receipt alone doesn't establish that the trip was business-related, which is the core weakness of fuel receipt reimbursement on its own.

Fuelshine automates verified mileage tracking for employees driving their own vehicle for work — no manual logs, no receipt-chasing.