What Is a Fleet Card (Fuel Card)?

How a fleet card works

The card belongs to the truck. GSA SmartPay, the federal government's card program, tells agencies in its fleet card training to assign fleet cards to vehicles, not to individuals. Each driver gets a driver ID or PIN instead, a short personal number typed in at the pump and never written on the card. The card tells you which truck. The ID tells you which person.

The pump asks before it pours. Valdosta State University's fuel card procedures give the order: insert the card, type the odometer reading rounded up to the next mile, type the six-digit driver ID, then pick regular gas or diesel. Any authorized driver's ID works with any of the university's vehicle cards.

What a fleet card controls: fuel only or fuel plus maintenance

A fleet card can be set up for fuel only or for fuel plus maintenance. Valdosta State's cards buy fuel for university vehicles and nothing else. The federal fleet card also covers oil, fluids, maintenance and repairs.

A regular company card can block a merchant category code (MCC), the four-digit code that tells the card network what kind of business a merchant runs. That keeps a card out of bars, but a gas station sells diesel and lottery tickets at one counter. So fleet cards also restrict by product: GSA's training tells coordinators to use the product code in place of MCC restrictions.

The card GSA issues for its leased vehicles shows how tight this gets. Premium fuel (unless required or authorized), convenience store items and personal purchases are off limits, and any repair over $100, or any accident damage, needs GSA Fleet's approval before work begins.

What a fleet card records at the pump

A normal card statement shows a date, a merchant and an amount. A fleet card statement adds what the driver typed at the pump (the odometer reading and driver ID) and what was bought: the fuel grade, the gallons and the price. The product detail is called Level 3 data. GSA's training says it shows exactly which products or services were purchased rather than a dollar total, and some merchants send line items, so an oil change can arrive as oil, filter and labor.

With odometer readings you get miles per gallon and cost per mile for every truck, and a sudden change in either is worth a question. The data also catches misuse. At a 2024 training forum, GSA showed a "fraud or misuse?" example with 12 transactions inside 24 hours, odometer readings all over the place and more fuel pumped than the tank could hold.

Worked example: a month of fuel for three trucks

Here is October for three of the landscaping company's trucks. To keep the math easy, every gallon cost $3.40.

Truck 1's odometer went from 48,210 to 50,130, or 1,920 miles. Miles per gallon is miles divided by gallons (1,920 / 128 = 15.0), and cost per mile is fuel cost divided by miles ($435.20 / 1,920 = $0.23).

Trucks 2 and 3 are the same model, so Truck 3's 7.5 stands out. The line detail explains it: several fills were 30 gallons or more on a truck with a 26-gallon tank. The crew had been filling the mowers' gas cans in the same transaction, 45 gallons over the month.

Nothing was stolen, but the books were wrong. Moving 45 gallons ($153.00) to equipment fuel leaves Truck 3 with 75 gallons and $255.00 of fuel: 900 / 75 = 12.0 miles per gallon and $255.00 / 900 = $0.28 a mile, in line with Truck 2. Equipment fuel needs its own card or transaction. Valdosta State issues separate cards for mowers, tractors and generators.

Where fleet cards are accepted

Fleet cards run on one of two kinds of network. Some carry a Visa or Mastercard logo and are taken wherever those cards are. Others come from fleet-only issuers with their own card numbers, and are accepted at the stations and shops in that issuer's network.

A fleet-only network can still be wide: one federal fleet card is accepted at 95% of U.S. fuel stations and 45,000 service locations. But coverage on a national map isn't coverage on your routes, so check the stations your crews already use and whether your repair shop takes the card.

Tax points for fuel and company vehicles

Two IRS rules matter once you run several trucks. Your CPA can confirm how they apply to your entity.

Five or more vehicles at once rules out the mileage rate

You can deduct vehicle costs with the standard mileage rate, a set amount per business mile, or with actual expenses such as gas, oil, repairs, tires and depreciation. IRS Topic 510, updated October 2026, says you can't use the mileage rate if you operate five or more cars at the same time, as in a fleet operation. Six trucks used in turn, never five at once, can still qualify.

Other conditions apply too. You must own or lease the vehicle. For one you own, you must choose the mileage rate in the first year it's available for business use, and for a leased one you keep it for the whole lease, renewals included. You also can't have claimed accelerated depreciation, a Section 179 deduction or bonus depreciation on it.

On actual expenses, fleet card statements become much of your fuel record. Our comparison of mileage vs actual expenses covers the choice.

Fuel for personal driving is a fringe benefit

If a crew lead fills the truck for a weekend trip, that fuel is personal use, not business use. IRS Publication 15-B for 2026 treats it as part of a fringe benefit, a form of pay beyond wages, and says any fringe benefit is taxable unless the law specifically excludes it.

Pub 15-B gives several ways to value an employee's personal use of a company vehicle. Under the cents-per-mile rule (the mileage rate times personal miles), the rate already includes fuel you provide. Under the lease value rule (a yearly value based on the vehicle's fair market value), you add fuel to wages separately, generally at the amount charged to you.

One exception matters to contractors. Some work trucks and vans count as qualified nonpersonal use vehicles, built so personal use is unlikely. All of an employee's use of those is a working condition benefit: something the employee could have deducted as a business expense if they had paid for it, so it stays tax-free. The conditions are specific, such as company markings and permanent equipment on a pickup, so check them first.

Fleet card mistakes that cost money

The most common one is a shared driver ID. If the whole crew types in the foreman's number, the data says the foreman bought everything. Give each driver their own ID and turn it off the day they leave.

Next come junk odometer entries: a zero, a round number, the same reading three fills running. Spot-check a few against the dashboard during your monthly credit card reconciliation, along with miles per gallon by truck. And decide where cards live. GSA tells agencies not to leave cards in vehicles, while Valdosta State requires them to stay in the truck. Either way, a card with the PIN on a sticky note is an open tab.

Managing fleet card spend day to day

A fleet card's portal shows fuel by truck. A tire on a crew lead's company card or a repair paid from the bank account lands somewhere else.

Clyr does not issue fleet cards or any other card. It connects to the Amex, Visa and Mastercard cards and bank accounts you already have, across 16,000+ institutions, so that tire and that repair land in one place. After a swipe on a connected card, the person holding it gets a text and replies with a receipt photo.

Coding rules that match on vendor, amount or card fill in the GL account (the general ledger category, such as Repairs), the job and the cost code. A custom field can carry the truck number for reporting by vehicle.

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