Fuel is typically the second-largest operating cost for a UK fleet, sitting behind only labour. Choosing the wrong card means paying more per litre, getting weaker reporting data, or finding that your drivers can’t fill up where they actually operate. This guide sets out the criteria that matter in a fuel card comparison, the questions to ask before you commit, and the practical differences between card types that most comparisons skip over.
Table of Contents
What Is a Fuel Card and How Does It Work?
A fuel card is a dedicated payment card for vehicle fuel and, in some cases, vehicle-related costs such as AdBlue and oil. Drivers use the card at a participating forecourt in place of a company credit card or cash. The transaction is recorded against the card’s account and invoiced to the business, typically weekly.
The core difference between a fuel card and a corporate credit card is data. A fuel card transaction captures the vehicle registration, mileage (where the driver enters it at the pump), fuel grade, volume, and site location. A credit card captures only the total spend and merchant name. That difference matters the moment you need to audit fuel use per vehicle, identify a spike in consumption, or produce records for an HMRC mileage audit.
Most providers issue a consolidated weekly VAT invoice, which removes the need to collect individual pump receipts. Under HMRC VAT Notice 700/64, this replaces individual receipts for the purpose of reclaiming VAT on business fuel.
The Six Criteria That Matter in Any Fuel Card Comparison
Most fuel card comparisons lead with headline pence-per-litre savings. That figure is useful but not sufficient on its own. A card saving 3p per litre on a network your drivers rarely use will cost more in detours than it saves at the pump. Work through these six areas before making a decision.
1. Network Coverage
This is the single most important factor and the one most often underweighted. Before comparing any other feature, map your drivers’ regular routes and check whether the card’s network has stations within a reasonable range of those corridors.
Open networks accept the card at forecourts across multiple brands, including motorway services, supermarkets, and independent sites. Closed networks restrict acceptance to a single brand’s forecourts and often offer better per-litre rates in return. For mixed fleets covering urban and rural routes, an open network is usually preferable. The practical test: list the ten forecourts your drivers use most often and check each against the card’s acceptance list before signing anything.
2. Pricing Structure
Fuel card pricing works on one of two models: a fixed weekly price set in advance regardless of pump prices, or a discount off the pump price at the point of sale. Fixed weekly prices give cost predictability; pump-price discounts track market volatility directly.
You also need to account for the full fee structure:
| Fee type | What to look for |
|---|---|
| Card issue fee | Often waived for larger fleets; check per-card or per-account basis |
| Transaction fee | Charged per fill; can erode per-litre savings on small or frequent top-ups |
| Monthly account fee | Flat charge regardless of volume; significant for small fleets |
| Minimum spend | Some providers require a monthly minimum to access discounts |
Work out total annual cost at your expected volume, not just the per-litre headline. A card charging 2p per litre less but adding a £5 transaction fee on every fill erodes quickly on a fleet that fills daily.
3. Reporting and Data Quality
Every card produces a basic transaction record: date, site, volume, cost. The question is what else the system captures. Better platforms record vehicle registration and driver ID at the point of sale, so you can report fuel cost per vehicle and per driver, not just per account. Some flag anomalies automatically: a fill volume exceeding the assigned vehicle’s tank capacity, or a transaction outside working hours. These surface exceptions without manual analysis.
If your fleet software captures telematics data, check whether the card platform integrates with it; matching transactions against vehicle tracking GPS position data is one of the most effective ways to identify card misuse. Our free fuel tracking template is a useful starting point if you’re not yet capturing fuel consumption per vehicle.
4. Security Controls
Fuel card fraud is a real risk, particularly where cards are shared rather than assigned individually. The controls that matter are driver PIN requirements, per-transaction spend limits, vehicle-type restrictions, and geographic flags for transactions outside a defined area. Real-time alerts when a transaction occurs or is blocked let you act before the weekly invoice rather than after. Pairing fuel card controls with vehicle cameras adds a further layer of evidence if a transaction is disputed.
5. Integration with Fleet Management Software
A card producing a standalone PDF invoice adds less value than one feeding directly into your fleet platform. Good integrations push transaction data into your system where it matches against vehicle records and mileage logs. For HMRC compliance, having card data apply the correct Advisory Fuel Rate per vehicle automatically removes manual calculation. For HGV fleets under DVSA oversight, cross-referencing fuel data with tachograph records in the same platform adds compliance value a standalone account can’t replicate. Pocket Box fleet management software is built to do exactly this, pulling fuel card data alongside compliance records in one place. For a broader view of how GPS data integrates with fleet operations, see our article on GPS telematics solutions.
6. Customer Support
A card declined at a motorway services at 22:00 needs a support line that answers. Check whether the provider offers 24-hour support, how disputed transactions are resolved, and how quickly replacements arrive. For smaller fleets, a clear online portal for managing cards and running reports is usually sufficient. For larger fleets, a dedicated account manager who can flag when your volume qualifies for better terms makes a real operational difference.
Types of Fuel Card: Network, Supermarket, and Branded
Understanding the three broad categories of fuel card helps narrow the comparison before you get into individual provider detail.
Network Cards
Network cards are accepted at a wide range of forecourts across multiple brands, including motorway services, independent forecourts, and some supermarket sites. Drivers aren’t restricted to a single brand and can fill up at whatever participating site is convenient. Network cards are generally the right starting point for fleets with diverse routes or drivers who travel nationally. The trade-off is that per-litre pricing is sometimes less aggressive than on closed-network branded cards.
Supermarket Cards
Supermarket forecourts tend to offer some of the cheapest pump prices in the UK, making these arrangements attractive on headline pence-per-litre figures. The limitation is network concentration: supermarket sites are clustered near retail parks and urban areas and are sparse on motorway corridors and rural routes. For urban delivery fleets this is a realistic option; for mixed-route or long-haul fleets the network gaps make it impractical as a primary card.
Branded Cards
Branded cards are tied to a single fuel supplier’s network. Drivers can only fill up at that brand’s forecourts, but typically access per-litre pricing that reflects the volume deal between the card provider and the fuel brand. These work well for fleets on predictable motorway-heavy routes, since most UK motorway service areas carry at least one of the major brands. For more varied or rural routes, a branded card creates a real operational constraint. Rebates and loyalty mechanisms on top of the per-litre price are usually volume-tiered; treat published rates with caution if your fleet doesn’t consistently hit the minimum monthly spend.
Fuel Card Comparison Table: Features, Costs, and Card Types
The table below compares the four main fuel card categories available to UK fleets. Individual provider terms vary; use this as a framework for structuring your own quotes rather than a live pricing reference.
| Feature | Network card | Supermarket card | Branded card | Multi-product fleet card |
|---|---|---|---|---|
| Typical acceptance points | 3,000 to 9,000+ sites across multiple brands | 500 to 1,500 supermarket forecourts | 1,000 to 2,500 branded sites | 2,000 to 8,000 sites; varies by provider |
| Pricing model | Fixed weekly price or pump discount | Pump price (supermarket rate) | Fixed weekly price or pump discount | Fixed weekly price; volume rebates available |
| Typical per-litre saving | 2p to 5p vs average pump price | 1p to 3p (saving reflects low base supermarket price) | 3p to 6p at in-network sites | 2p to 5p; higher at volume thresholds |
| Transaction fee | £0.25 to £0.75 per fill | Nil to £0.30 per fill | Nil to £0.50 per fill | £0.20 to £0.60 per fill |
| Monthly account fee | £5 to £20 | Nil to £10 | Nil to £15 | £10 to £30 |
| Driver PIN and spend limits | Yes, standard | Yes on most | Yes, standard | Yes, standard |
| Reporting depth | Transaction-level with driver/vehicle ID on most | Basic on most | Transaction-level on most | Most advanced; often includes anomaly alerting |
| VAT invoice | Weekly consolidated | Weekly consolidated | Weekly consolidated | Weekly or daily consolidated |
| EV charging access | Some providers | Rare | Some providers | Growing; most advanced offering |
| Best suited to | Mixed-route or national fleets | Urban, short-range operations | Predictable motorway-heavy routes | Larger fleets wanting consolidated cost management |
The per-litre saving column is the figure most fleet managers focus on first, but it’s the least reliable for comparison. Published savings are quoted against average pump prices at a point in time; what matters is the saving relative to where your drivers actually fill up. A branded card offering 6p off at its own sites delivers nothing if those sites aren’t on your routes.
The transaction fee row is the one most commonly underestimated. At £0.50 per fill, a fleet completing 200 transactions per month pays £1,200 per year in transaction fees alone. At 3p per litre saving and an average 55-litre fill, you need roughly 73 fills just to cover that cost. Always calculate break-even transaction volume before accepting a quote.
How to Calculate Whether a Fuel Card Saves You Money
A fuel card comparison only becomes useful when you calculate the net saving at your actual fleet volume. Here is a worked example.
Fleet profile: 15 vehicles. Average monthly fuel spend: £8,500. Average fill: 55 litres. Average fills per month: 155 transactions.
Network card with 3p per litre discount:
- Monthly fuel volume: 155 × 55 litres = 8,525 litres
- Gross monthly saving: 8,525 × £0.03 = £255.75
- Transaction fee: £0.40 × 155 = £62.00
- Monthly account fee: £12.00
- Net monthly saving: £255.75 − £62.00 − £12.00 = £181.75
- Annual net saving: approximately £2,181
That saving is real but modest at this fleet size. The greater value is in reporting data and the time saved on manual receipt processing. Fuel data also surfaces driver behaviour patterns worth investigating: a vehicle consistently above its type average for consumption often points to harsh acceleration or excessive idling. See how monitor fleet speeding connects to fuel cost in practice.
Now run the same numbers with a higher transaction fee, or a card saving 5p per litre but requiring a 2-mile detour per fill. The headline figure shifts significantly. Always calculate at your actual volume and route pattern before accepting a quote.
For HGV fleets the arithmetic changes substantially. A 50-vehicle fleet filling 400-litre tanks twice a week consumes roughly 160,000 litres per month. At 3p per litre, that’s £4,800 per month before fees. At that scale a small difference in per-litre rate has a five-figure annual impact.
Fuel Cards and HMRC Compliance
Fuel card data has a direct role in three areas of HMRC compliance.
VAT reclaim. Under HMRC VAT Notice 700/64, a fuel card’s consolidated weekly invoice qualifies as a valid VAT document provided it includes the supplier’s VAT registration number, the date of supply, the quantity of fuel, and the total VAT charged. This replaces individual pump receipts and simplifies your VAT return. For the fuel to be fully reclaimable, it must be used for business purposes. Private use creates a partial restriction or benefit-in-kind liability.
Benefit in kind. Where a company provides fuel for private use in a company car, that’s a taxable benefit. HMRC’s fuel benefit charge is calculated using a fixed multiplier applied to the vehicle’s CO2 emissions band. Fuel cards that allow business-only restriction by driver PIN or vehicle type can eliminate this liability entirely if configured correctly.
Advisory Fuel Rates. HMRC publishes HMRC Advisory Fuel Rates quarterly, setting approved reimbursement rates per mile for company cars by engine size and fuel type. If your drivers are reimbursed for business mileage via a company fuel card, the card data needs to map accurately to the correct AFR for each vehicle. Fleet management software that integrates fuel card data with vehicle records handles this automatically. Our fleet compliance guide covers the broader compliance obligations fleet managers carry in the UK, and the fleet audit checklist is useful for verifying your fuel records are audit-ready.
Fuel Cards for Specialist Fleet Types
The right card for a courier van fleet is not necessarily the right card for a hire-and-reward taxi operator or a coach operator. A few sector-specific points are worth noting.
HGV and coach fleets. High-volume fills require cards with tank-size limits set appropriately for commercial vehicles. A card calibrated for car-sized transactions will flag a 400-litre fill as anomalous, generating unnecessary administration. For operators running vehicles under EC Regulation 561/2006 or GB domestic tachograph rules, fuel card transaction times and locations provide independent corroboration of driver location, which has direct value during DVSA scrutiny. For a full breakdown of the hours rules that govern these operators, see our guide to HGV driving hours. Running monthly fleet safety audits alongside your fuel card review gives a more complete picture of compliance exposure.
Mixed fuel fleets. If your fleet includes diesel, petrol, and LPG vehicles, check whether a single card covers all fuel types across your network. Some providers issue a single card with product restrictions per vehicle assignment: a petrol restriction on a car-assigned card prevents a diesel fill regardless of what the site stocks. That level of control is worth asking for explicitly.
Electric vehicle charging. Several providers now include EV charge network access. Coverage varies significantly and changes frequently. Before treating EV charging as a like-for-like feature in your comparison, verify which specific networks the card covers and whether the pricing is competitive against direct network membership. For fleets part-way through an EV transition, a card covering both liquid fuel and EV charging on one invoice simplifies administration during the changeover. Analysing driver shift patterns through telematics helps identify which vehicles are realistic EV candidates based on daily mileage.
Refrigerated transport. Vehicles with refrigeration units consume fuel to run the cooling system independently of the main engine. Some fleet managers assign separate cards or cost codes to reefer fuel to keep operational costs clean. If the reefer unit runs on a separate tank, which is common on trailer-based systems, it may need a separate card assignment. Confirm this before assuming one card per vehicle covers all fuel that vehicle consumes.
Six Questions to Ask Before You Sign a Fuel Card Agreement
Before committing to any provider, get clear answers to these questions in writing.
1. What is the minimum contract length and what are the exit terms? Some providers lock fleets in for 12 or 24 months with penalties for early exit. Others operate on a rolling monthly basis. Know what you’re committing to before you sign, particularly if your fleet size is likely to change.
2. How is the weekly price set? For fixed weekly price cards, ask how the rate is calculated and whether the provider publishes the methodology. Some link transparently to wholesale prices; others set rates at their own discretion. For pump-discount cards, confirm whether the discount applies to the actual pump price or a reference price.
3. What happens if a card is lost or stolen? Confirm the cancellation process, replacement lead time, and whether there is liability protection on fraudulent transactions made before you report the loss. For fleets with drivers spread nationally, instant cancellation via an online portal matters more than a phone line that opens at 09:00.
4. How is the card linked to drivers or vehicles? A vehicle-assigned card creates ambiguity when multiple drivers use the same vehicle. A driver-assigned card used across vehicles loses per-vehicle cost data unless the driver enters the registration at the pump. Understand the assignment model and confirm how it affects your reporting before ordering cards. Keeping driver records current through driver licence checking makes driver-assigned card management significantly cleaner.
5. What reporting do I get, and in what format? Ask to see a sample report before signing. Does it show vehicle registration, driver ID, mileage, and fuel grade at transaction level? Can you export to a format your fleet software accepts? If the reporting doesn’t capture what you need, no per-litre saving compensates for that gap.
6. Does the card integrate with my fleet software? If you’re running telematics or a fleet management platform, ask whether there’s a direct integration or published API. A CSV export requiring manual import each week is a workaround, not an integration.
Conclusion
A fuel card comparison that leads only with pence-per-litre figures misses most of the decision. Network coverage, reporting quality, fee structure, security controls, and integration with your fleet software all affect the real value of a card at your fleet’s scale and route profile.
Work through the six criteria in this guide before you request quotes. Calculate total cost of ownership at your actual volume. Ask the six questions before you sign. Make sure the card you choose gives you data you can actually use, not just a cheaper way to pay for fuel.
Pocket Box fleet management software integrates fuel card transaction data with driver hours records, vehicle inspection history, and compliance documentation, so you’re not assembling evidence from multiple systems when a roadside check or compliance audit requires it. Download our fleet optimisation guide for a broader look at reducing fleet running costs, or contact the Pocket Box team to find out how the software works for your fleet size and type.
FAQs
What is the difference between a fuel card and a fleet card?
The terms are often used interchangeably, but a fuel card is typically restricted to fuel and directly fuel-related purchases such as AdBlue. A fleet card can cover broader vehicle costs including maintenance, tyres, and tolls. For most UK fleets, a fuel card is the right starting point. Fleet cards that cover wider costs can create complexity in VAT reclaim where different cost types carry different VAT treatment, and the reporting can be harder to segment cleanly.
Are fuel cards worth it for small fleets?
For a fleet of fewer than five vehicles, the economics of a fuel card depend heavily on the fee structure. A card with a monthly account fee of £15 and a £0.50 transaction fee per fill needs to deliver meaningful per-litre savings to break even. At low volume, the fees can exceed the discount.
That said, the admin saving from consolidated VAT invoicing has value even for small fleets, particularly if the alternative is manually collecting and processing receipts. For fleets of five or more vehicles, the combination of per-litre savings and reduced admin time almost always justifies using a fuel card over a corporate credit card.
Can fuel cards be restricted to specific fuel types?
Yes, most providers allow you to configure which fuel types a card can be used to purchase. This is a meaningful fraud control for mixed fleets: a card assigned to a petrol car should not be able to fill a diesel van. Confirm with your provider that product restrictions apply at the point of sale rather than just flagging mismatches in reporting after the transaction has been processed.
How does fuel card VAT reclaim work?
Fuel card providers issue a consolidated VAT invoice weekly covering all transactions on your account. Under HMRC VAT Notice 700/64, this qualifies as a valid VAT document provided it includes the supplier’s VAT number, the date, the quantity, and total VAT charged. You submit it as part of your normal VAT return rather than collecting individual pump receipts. For the fuel to be fully reclaimable it must be used for business purposes; private use creates a partial restriction or benefit-in-kind liability depending on how your fleet is structured.
What should I do if a fuel card transaction looks fraudulent?
Contact your provider’s fraud or security team immediately. Most providers have a dedicated line for this and can cancel the card and freeze the account within minutes. Do not wait for the weekly invoice before raising it: the sooner the card is stopped, the lower the financial exposure. Keep a record of the transaction details you’re querying, including date, site, volume, and any PIN entry records if your provider captures that data.
Do fuel cards work for electric vehicle charging?
Some fuel card providers have added EV charging to their product. Acceptance at public charge points varies significantly by provider and network. Before treating EV charging as a like-for-like replacement for fuel card coverage, check which specific networks are covered and what the pricing structure looks like. Direct membership of a charge network is often more cost-effective for fleets with large numbers of EVs; a fuel card with bolt-on charging access makes more sense for mixed fleets where EV drivers represent a minority.
How long does it take to get a fuel card?
Standard card issue takes three to seven working days once the account application is approved. Account approval typically requires a credit check and takes two to five working days. Allow two weeks from application to first use as a safe planning assumption, and confirm the lead time with your provider if you need cards for a specific date.
