Fuel is your biggest operating expense. A good fuel card can save you $0.10–$0.40 per gallon on diesel depending on your network usage, volume, and negotiating leverage. On 100,000 annual miles at 6.5 MPG, that's 15,385 gallons — and a $0.20/gallon discount is $3,077 in your pocket every year just from picking the right card. This is an honest look at the major options in 2026.
What to Look For in a Fuel Card
Before diving into specific cards, here's what actually matters for owner-operators:
- Discount per gallon: The primary value driver. Compare against retail diesel prices at the networks you actually use.
- Network coverage: A 40 cents/gallon discount only matters if there's a participating station on your route.
- Credit vs. prepaid: Credit cards let you fuel now, pay later — critical for cash flow. Prepaid cards require loading funds in advance.
- Fees: Transaction fees, monthly fees, and card fees eat into your discount. Calculate total cost of ownership, not just headline discount.
- Business credit reporting: Some cards report to business credit bureaus. For owner-operators building business credit, this is a meaningful differentiator.
- IFTA reporting: Good cards generate detailed fuel-by-state reports that make quarterly IFTA filing straightforward.
- Cash advance / ATM access: Some cards include this for on-road expenses. Fees vary widely.
WEX Fleet Card
Overview
WEX (formerly Wright Express) is one of the largest fleet card networks in North America. Strong nationwide acceptance, solid IFTA reporting tools, and a reliable back-end for business owners who need consolidated billing across multiple drivers or trucks.
Discounts
WEX doesn't advertise a universal cents-per-gallon discount because it operates through a negotiated network pricing model. Typical savings run $0.05–$0.15/gallon at major truck stops on the WEX network. Better discounts are available through WEX's partnerships with specific fuel chains and if you negotiate fleet pricing (harder for single-truck operators).
Network Coverage
Accepted at over 90% of U.S. fuel locations including Pilot Flying J, Love's, and most regional chains. One of the broadest acceptance networks available.
Fees
- No monthly fee on most programs
- Per-transaction fees vary by program: $0–$1.00/transaction depending on volume tier
- Card fee: typically waived on first card
Business Credit Reporting
WEX reports to business credit bureaus (Dun & Bradstreet, Experian Business). If you're building your business credit profile, WEX transactions contribute to your business credit history. This is one of WEX's underappreciated benefits for owner-operators establishing business credit.
Bottom Line
Best for owner-operators who want broad network coverage and business credit reporting. Discounts are modest but consistent. IFTA reporting is solid.
Comdata Fleet Card
Overview
Comdata has been trucking's go-to fuel card for decades. Deep integration with the Pilot Flying J network (largest truck stop chain in the U.S.) is the core differentiator. If a significant portion of your fueling happens at Pilot or Flying J locations, Comdata deserves serious consideration.
Discounts
Comdata's strongest discounts come through its partnership with Pilot Flying J's Pro Rewards program. Owner-operators can save $0.06–$0.14/gallon at Pilot/Flying J and smaller amounts at other network locations. The headline number depends heavily on monthly fuel volume — higher volume unlocks better discount tiers.
Network Coverage
Accepted at 7,000+ locations including Pilot Flying J (which alone has 750+ locations). Coverage is strong on major interstates and corridors. Weaker in rural areas and off-highway stops.
Fees
- Monthly fee: $0–$15 depending on program tier
- Transaction fee: $0.00–$0.50/transaction
- Cash advance fee: typically 3–5% of advance amount
Business Credit Reporting
Comdata reports to Dun & Bradstreet. Useful for building business credit history.
Bottom Line
Best for drivers who run major interstate corridors with frequent Pilot/Flying J access. The Pilot Pro Rewards stacking can deliver meaningful per-gallon savings at scale. Less compelling if your routes favor independent truck stops or regional chains.
TCS Fuel Card (Transport Clearance Services)
Overview
TCS is specifically designed for owner-operators and small carriers. Their selling point is discounts specifically negotiated for truckers, not general fleet vehicles. Strong penetration in the independent truck stop segment that other cards neglect.
Discounts
TCS advertises discounts averaging $0.10–$0.24/gallon at their network locations. The variance is significant — some stops deliver strong savings while others are minimal. Actual savings depend heavily on your specific routes and which TCS network stops are on them.
Network Coverage
7,000+ locations including some major chains but emphasizing independent and regional stops. This is TCS's differentiator — reaching locations that WEX/Comdata don't negotiate special pricing with. For owner-operators who avoid major chains, TCS can unlock savings others miss.
Fees
- No monthly fee
- Per-transaction fee: $0.00–$0.25 depending on location
- Annual card fee: ~$45
Business Credit Reporting
TCS does not consistently report to major business credit bureaus. If building business credit is a priority, this is a limitation.
Bottom Line
Best for owner-operators who use independent truck stops on their regular routes. Strong per-gallon discounts where the network applies, but coverage gaps on some corridors. Run your route through TCS's locator before committing.
RTS Financial Fuel Card
Overview
RTS (Resolve Transportation Solutions) combines a fuel card with factoring services, making it a compelling bundle for owner-operators who use factoring for cash flow. The fuel card benefits are integrated into the factoring relationship.
Discounts
RTS advertises up to $0.44/gallon savings through their negotiated pricing. This headline number applies at specific high-discount network locations. Typical real-world savings for most users run $0.08–$0.20/gallon depending on route and location mix.
Network Coverage
5,000+ locations including major chains and regional stops. Solid but not the broadest available.
Fees
- No monthly fee for fuel card standalone
- Transaction fees vary by location
- Factoring fees apply if using that service (1.5%–5% of invoice value)
Business Credit Reporting
RTS reports to Dun & Bradstreet and Experian Business. Good for business credit building.
Bottom Line
Best for owner-operators who also need invoice factoring. The combined fuel card + factoring bundle from a single vendor simplifies back-office operations. Standalone fuel card is competitive but not clearly best-in-class compared to WEX or Comdata at major stops.
Mudflap
Overview
Mudflap is the newest entrant and the most different from traditional fuel cards. It's an app-based discount platform rather than a traditional card — you book discounted fuel at participating stops through the app, then pay with whatever method you choose. No credit check, no monthly fees, no application process.
Discounts
Mudflap's real-time discounts average $0.10–$0.40/gallon below retail, with the app showing current discounts at stops on your route. The model is transparent — you see the actual discounted price before committing to a stop. Discounts vary by location and time, which is both a strength (you can optimize) and a limitation (you can't predict).
Network Coverage
4,000+ stops and growing rapidly. Coverage is uneven — excellent in major corridors, thin in rural areas. The app shows you real-time availability, so you always know what's accessible.
Fees
- No monthly fee
- No transaction fee
- No application fee
- No credit check
Business Credit Reporting
Mudflap does not report to business credit bureaus. It's a discount platform, not a credit product.
Bottom Line
Best for owner-operators who want immediate savings with zero setup friction. No credit check and no fees make it accessible to new authorities or drivers with imperfect credit. The app-based model requires a smartphone and internet connection at the pump, which is a minor constraint. Doesn't build business credit.
Side-by-Side Comparison
| Card | Typical Discount | Monthly Fee | Business Credit | Network Size |
|---|---|---|---|---|
| WEX | $0.05–$0.15/gal | $0 | Yes (D&B, Experian) | 90%+ of U.S. locations |
| Comdata | $0.06–$0.14/gal | $0–$15 | Yes (D&B) | 7,000+ locations |
| TCS | $0.10–$0.24/gal | $0 | No | 7,000+ locations |
| RTS Financial | $0.08–$0.20/gal | $0 | Yes (D&B, Experian) | 5,000+ locations |
| Mudflap | $0.10–$0.40/gal | $0 | No | 4,000+ locations |
Which Card Should You Use?
There's no single winner — the right card depends on your specific situation:
- Building business credit? → WEX or RTS Financial. Both report to D&B and Experian. Combined with a business credit card that reports, you're building a credit profile that unlocks better financing for your next truck.
- Predominantly Pilot/Flying J routes? → Comdata. The Pilot Pro stacking makes it the strongest discount option for heavy users of that network.
- Independent/regional stops on your regular routes? → TCS. Run your route through their locator first to verify coverage.
- New authority with no credit history? → Mudflap. No credit check, instant setup, meaningful discounts. Upgrade later once you've built credit and volume.
- Want to optimize in real time? → Mudflap or TCS. Both give you visibility into per-location pricing so you can make fuel stop decisions based on actual savings.
Many experienced owner-operators carry two cards — a Mudflap account for opportunistic high-discount stops, and a WEX or Comdata card as the reliable daily driver with business credit reporting. The small annual cost of maintaining two options often pays for itself in better fueling flexibility.
Fuel Cards That Build Business Credit
If you're an owner-operator working to establish or improve your business credit profile, the cards that report to business bureaus are worth prioritizing even if the discount per gallon isn't the absolute best. A strong Dun & Bradstreet and Experian Business profile unlocks better truck loan rates, lower insurance premiums (some carriers check business credit), and better broker terms. RoadVault's business credit builder tracks your credit accounts, payment history, and score trajectory in one place — so you can see how your fuel card payments are contributing to your overall credit picture. See how business credit works.