Most Beneficial Cargo Owners (BCOs) believe they have contractually managed their fuel surcharge exposure.
During ocean freight tenders, procurement teams spend considerable time negotiating the bunker index used in their Bunker Adjustment Factor (BAF) formula. Because the index is transparent, independently published, and accepted by both parties, it creates the impression that fuel surcharge risk has been addressed.
In reality, only one part of that risk has been managed. The bunker price.
The second component, the carrier's trade factor, is typically accepted with little or no independent validation, even though it largely determines the fuel surcharge ultimately paid by the shipper.
As a result, many procurement teams unknowingly leave a significant portion of their fuel surcharge exposure unmanaged.
Key Takeaways
- A BAF calculation has two components: the bunker price and the carrier's trade factor, yet most procurement teams actively validate only one of them.
- Trade Factor Risk arises when a carrier's trade factor cannot be independently assessed, leaving part of the fuel surcharge commercially unmanaged.
- Changes in vessel deployment, routing, and utilization can make contractual trade factors diverge from actual operating conditions over time.
- Independent benchmarking of both the bunker price and the trade factor provides a stronger foundation for transparent BAF negotiations and contract governance.
BAF Is Not a Price. It Is a Two-Component Calculation
A BAF charge is determined by two variables.
BAF per TEU = Bunker Price (USD/tonne) × Trade Factor (tonnes of fuel per TEU)*
The bunker price is the visible component. It is tracked through published indices, referenced in contracts, and monitored throughout the life of the agreement. When fuel prices fluctuate, both carriers and shippers can observe the same market data.
The trade factor is the less visible component. It is the carrier-specific multiplier that converts the bunker price into a per-container surcharge. It reflects assumptions about vessel deployment, fuel consumption, sailing distance, TEU utilization, and operating speed. These assumptions are established by the carrier and are rarely disclosed in sufficient detail for customers to evaluate.
Consequently, most negotiation efforts focus on the bunker index, while the trade factor is typically accepted as part of the carrier's standard methodology.
*This two-component structure is reflected in the published BAF methodologies of major ocean carriers, including CMA CGM, Hapag-Lloyd, and Maersk.
The Same Bunker Price. Two Very Different Fuel Surcharges.
This distinction has direct commercial consequences.
Two carriers may reference exactly the same bunker index however the trade factor in each of the volume contracts is different (see table below). The difference is not driven by fuel prices. It is driven by the assumptions embedded in each carrier's trade factor. Therefore, the Trade Factor risk remains unmanaged.
|
Carrier |
Bunker Index |
Trade Factor |
Resulting BAF |
|
Carrier A |
USD740 |
0.6 |
USD 444 / TEU |
|
Carrier B |
USD740 |
0.7 |
USD 518 / TEU |
The bunker price is identical. The trade factor explains the difference.
Introducing Trade Factor Risk
For years, BCOs have actively managed bunker price risk. The trade factor has received far less attention.
This creates a distinct commercial exposure.
Trade Factor Risk is the risk of relying on a carrier-defined trade factor without an independent way to determine whether it reasonably reflects the actual cost of transporting a container on a specific service.
Unlike bunker price risk, which is transparent and shared between both parties, Trade Factor Risk is asymmetric. The carrier defines the methodology, applies it to every shipment, and retains most of the information needed to evaluate whether it remains representative of actual operations.
The shipper carries the financial exposure without an equivalent means of verification.
The challenge becomes even greater over the life of a contract. Vessel deployment may change. Routes may be rerouted. Average utilization may increase or decrease. Operational conditions evolve, while the contractual trade factor often remains unchanged.
As a result, the fuel surcharge may gradually diverge from the actual cost of operating the service without either party formally reassessing the underlying assumptions.
What Trade Factor Risk Means for Ocean Tenders
Managing Trade Factor Risk begins by asking better questions during procurement.
Instead of focusing exclusively on the bunker index, procurement teams should also ask:
- Does the trade factor reflect the actual fuel consumption of the vessels deployed on this service?
- Does it align with the routing and sailing distance of the trade lane?
- Does it account for vessel utilization on the contracted service?
- Does it remain representative if the service changes during the contract?
These questions cannot be answered through a bunker index alone. They require an objective benchmark built from actual voyage execution data.
Simply asking these questions changes the procurement conversation. It signals that both variables within the BAF calculation will be evaluated rather than accepting one of them as a commercial black box.
For a deeper look at how the seven operational variables behind BAF interact, and why carriers cannot be compared on surcharge levels without a common reference, read: Bunker Adjustment Factor (BAF) Explained: What Fuel Surcharges Really Mean for Shippers.
For practical guidance on bringing an independent benchmark into carrier negotiations and tender design, read: How to Use BAF Benchmarking in Carrier Negotiations.
From Benchmarking to Contractual Governance
Identifying Trade Factor Risk is only the first step.
The more important question is how procurement teams should manage it.
Today, most ocean contracts independently reference the bunker price while relying entirely on a carrier-defined trade factor. That creates an imbalance within the BAF calculation.
A more transparent contractual approach is to establish independent references for both variables:
- an independent bunker price index for fuel prices
- an independent Trade Factor Benchmark for the operational component of the surcharge
This enables carriers and shippers to evaluate the complete BAF calculation using common, evidence-based references rather than relying exclusively on proprietary methodologies.
VesselBot's Fuel Surcharge Benchmarking Indices were developed to support this approach. Built from execution-grade voyage data, they benchmark trade factors using actual vessel deployment, routing, fuel consumption, sailing distance, and utilization across trade lanes. Procurement teams can use this information to evaluate carrier methodologies during tenders, strengthen negotiations, and monitor whether contractual assumptions continue to reflect operational reality throughout the agreement.
Rather than simply benchmarking fuel surcharges, this approach introduces greater transparency and stronger contractual governance.
Conclusion
The industry's focus on bunker price transparency has been both necessary and valuable. But transparency in fuel prices alone does not create transparency in fuel surcharges.
As long as ocean contracts independently govern one variable of the BAF calculation while leaving the other entirely carrier-defined, a significant portion of commercial exposure remains unmanaged.
The next evolution of fuel surcharge governance is to bring the same level of transparency to the trade factor.
Just as bunker indices have become standard contractual references for fuel prices, independent Trade Factor Benchmarks should become standard references for the operational component of BAF. Together, these two benchmarks create a transparent, evidence-based methodology that enables carriers and shippers to negotiate on a common factual foundation.
The future of fuel surcharge governance is not independently managing the bunker price. It is independently governing both components of the BAF calculation.
Q&A
What is a trade factor in BAF calculation?
The trade factor is the carrier-specific multiplier that converts a bunker price per tonne into a per-container BAF charge. It encapsulates vessel type, fuel consumption, voyage distance, TEU utilization, and operational speed assumptions for the trade lane. Because it is carrier-defined and not independently disclosed, shippers cannot verify from the invoice alone whether it accurately reflects the actual cost of the service.
What is Trade Factor Risk?
Trade Factor Risk is the commercial exposure that arises when a BCO's contractual BAF is governed by a carrier-defined trade factor that may not accurately reflect the actual operational cost of transporting a container on the service. Unlike bunker price risk, which both parties can observe through market indices, Trade Factor Risk is asymmetric: the carrier controls the information needed to assess it, and the shipper carries the exposure without the means to measure it independently.
Why do two carriers on the same trade lane charge different BAF amounts when referencing the same bunker index?
Different carriers apply different trade factors. Because trade factors are carrier-specific and not disclosed, two carriers referencing an identical bunker index can produce materially different BAF charges on the same trade lane in the same period. Without an independent reference, the shipper has no basis for determining whether that difference is operationally justified.
How can an execution-based benchmark address Trade Factor Risk?
An execution-based benchmark, built from AIS vessel tracking data, vessel-specific fuel consumption models, actual routing and distance data, and port-specific bunker prices, constructs an independent estimate of what the trade factor should reasonably be for a specific carrier on a specific service. This gives procurement teams a factual basis for evaluating whether the carrier's trade factor is commercially aligned with actual voyage operations.
SOURCES
- CMA CGM – New BAF Formula
- Hapag -Lloyd Marine Fuel Recovery mechanism
- MAERSK Update on Bunker Adjustment Factor (BAF) & Environmental Fuel Fee (EFF)
About the author: Constantine Komodromos is the Founder and CEO of VesselBot, the company that built execution-grade, shipment-level freight emissions intelligence for global shippers across ocean, air, and land transport. With a background spanning over 20 years in finance and business advisory, he has provided strategic direction and financial management across challenging and volatile environments, with a proven track record of increasing profitability, reducing operating expenses, and managing risk. That foundation shaped a different lens on how global organizations approach logistics data and emissions measurement. Over ten years of leading VesselBot, working directly with Fortune 500 manufacturers and global shippers across Europe and North America, he has developed a clear view of where logistics data fails large organizations and what it takes to fix it. His work focuses on replacing industry averages and carrier-reported estimates with actual voyage execution data, so that Scope 3 transportation emissions become an operational KPI evaluated at the moment of planning and execution. He was named to the TIME100 Most Influential Climate Leaders list. VesselBot holds the #1 ranking in the latest Drewry's Emissions Measurement Providers Comparison Guide and was recognized as a Gartner Cool Vendor in Supply Chain Management Technology. His work has been applied by global manufacturing and shipping companies seeking to align emissions reporting with operational decision-making. He holds the designations of Fellow of the Association of Chartered Certified Accountants (FCCA) and Certified Member of the Institute of Internal Auditors (CMIIA).