Demystifying Surcharges: BAF, CAF & Other Fees (and How to Minimize Them)

Freight quotes often look simpler than they really are. What appears to be one ocean-freight number is usually a stack of charges: fuel-linked lines, terminal handling, documentation, seasonal add-ons, and penalties that only show up if execution slips. Hapag-Lloyd’s tariff framework explicitly separates bunker-related charges, security-related charges, origin and destination terminal handling charges, and peak season surcharge, and also notes that other charges and contingency charges may apply. Maersk’s rate-sheet guidance adds that surcharges not listed as inclusive are floating per tariff and can change during the validity of the rate.

That is why the cheapest-looking base rate is not always the cheapest shipment. Some fees are structural and hard to eliminate. Others are avoidable if you plan properly. And a true all-in price is different from a base rate plus add-ons: Maersk’s glossary defines “all in” and “all inclusive” as a price that includes all charges associated with the shipment.

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Why This Matters More Than Ever

Surcharges are not static. Recent carrier advisories show how quickly they can move when conditions change. In Maersk’s 13 March 2026 Middle East operational update, the carrier said a temporary Emergency Bunker Surcharge would apply globally from 25 March 2026, be monitored every 14 days, and be adjusted up or down based on fuel availability, cost, and mix. That is a good reminder that surcharge risk is not theoretical; it can change inside the same budgeting cycle.

For importers and exporters, the practical question is not “Why are there surcharges?” The better question is “Which of these are fixed, which are floating, and which ones can I actually control?” That is where margin protection starts.

What BAF, CAF, and Other Fees Actually Mean

BAF: the fuel-linked surcharge

Maersk defines BAF, or Bunker Adjustment Factor, as an adjustment applied to offset fluctuations in bunker costs. Its surcharge-definition page adds that BAF accounts for fluctuations in global bunker costs for 0.5% sulphur fuel. That reference to 0.5% sulphur matters because IMO’s global sulphur cap, in force since 1 January 2020, reduced the sulphur limit in ships’ fuel oil from 3.50% to 0.50% outside designated emission control areas. In plain terms, fuel costs and fuel-compliance costs still sit inside freight economics, even when the quote labels differ by carrier.

You also need to know that fuel charges do not always appear under the same name. Hapag-Lloyd’s trade-surcharge framework uses Marine Fuel Recovery (MFR) and also references an IMO 2020 Transition Charge, while Maersk separately defines Emergency Bunker Surcharge for extraordinary situations that standard BAF does not cover. So when a shipper says “BAF,” the actual invoice line may be BAF, MFR, ITC, or a temporary emergency fuel-related surcharge.

CAF: the currency-linked adjustment

Maersk defines CAF as Currency Adjustment Factor, used to adjust ocean freight due to currency fluctuations, and describes it as a compensatory cost-sharing measure that removes the carrier’s currency risk on applicable trade lanes. Hapag-Lloyd’s customer notices show CAF being applied separately on certain regional scopes, including Middle East, Indian Subcontinent, and Africa trades. That means CAF is not just a theoretical term from old shipping glossaries; it can still appear as an active rate component depending on carrier and lane.

THC, OHC, and DHC: terminal handling

Terminal handling is one of the most common “I thought this was included” surprises. Maersk’s glossary defines Terminal Handling Service-Origin (OHC) as the cost of handling a container at the origin port or terminal, and Terminal Handling Service-Destination (DHC) as the equivalent at destination. Hapag-Lloyd’s tariff pages also show origin and destination terminal handling as separate charge categories. So if two quotes have the same ocean base but different OHC or DHC treatment, they are not truly comparable.

PSS, contingency, and congestion charges

Peak Season Surcharge is exactly what it sounds like: a demand-driven add-on when capacity tightens. Maersk’s peak-season guidance says that when carriers operate at full capacity, PSS and higher freight rates become standard, and it recommends booking early to secure space and save costs. Hapag-Lloyd’s tariff pages likewise list PSS among regular surcharge categories and warn that contingency charges may also apply. Maersk’s surcharge definitions go further by spelling out congestion fees, emergency contingency surcharge, and emergency risk surcharge for situations involving bottlenecks, delays, equipment shortages, hazardous regions, or other disruption.

Documentation and admin fees

These are usually smaller than ocean freight, but they are still real money, especially at shipment frequency. Maersk’s surcharge definitions say Documentation Fee Origin covers creation and processing of standard transport documents such as the bill of lading, while Documentation Fee Destination covers standard destination transport documents such as the delivery order. The same page also lists EDI fees for electronic submissions made by the carrier to ports, customs, or government entities on the customer’s behalf. These are not always dramatic charges, but they multiply fast when bookings are frequent or document amendments keep happening.

Demurrage and detention

This is where avoidable cost usually becomes expensive cost. Maersk defines demurrage as the fee when the customer holds carrier equipment in the terminal longer than the agreed free time, and detention as the charge when the consignee holds the container outside the port, terminal, or depot beyond the allotted free time. The same glossary defines free time as the period allowed before demurrage or detention applies. On its India imports page, Maersk says customers can view the number of free days and the last free date online to plan container pickup or return.

One useful nuance: if you are moving cargo on U.S. trades, invoice discipline matters more than before. The U.S. Federal Maritime Commission’s final rule says that if a detention or demurrage invoice fails to include required information, the billed party has no obligation to pay that charge. That does not apply globally, but it is an important reminder that surcharge review should include invoice review, not just operational review.

Carbon and newer regulatory fees

A growing part of “other fees” is environmental compliance. Maersk’s surcharge definitions include carbon-emission export and import charges to recover carbon fees the carrier must pay to authorities. Hapag-Lloyd’s trade-surcharge page separately lists Emission Allowance Surcharge (ETS) and says those amounts are direction-specific, regularly reviewed, and invoiced as a separate surcharge on the bill of lading. This is one reason why surcharge literacy today has to go beyond the older BAF/CAF vocabulary.

Which Fees You Can Really Minimize

Not all surcharges should be treated the same.

The first bucket is structural but manageable: fuel-related charges, terminal handling, security charges, and many regulatory or environmental charges. These are often hard to erase completely, but you can still reduce the damage by comparing carriers properly, asking which items are inclusive versus floating, choosing the right sailing week, and using more predictable pricing structures where available. Maersk’s rate-sheet guidance is especially clear that floating surcharges can change during rate validity unless shown as inclusive.

The second bucket is operationally avoidable: demurrage, detention, some document-related fees, and change-driven costs such as inland-destination changes. These are usually not market fate. They are process costs. Late customs work, late pickups, wrong shipping instructions, and weak empty-return planning are what turn them into invoice lines.

The third bucket is optional or elective: additional free time, controlled-atmosphere fees, certain tracking-device fees, Ship Green fees, and some premium-service add-ons. Hapag-Lloyd’s trade-surcharge page lists all of these as distinct fee categories. These are not automatically “bad”; sometimes buying additional free time in advance is smarter than paying unpredictable detention later. The point is that they should be conscious choices, not surprises.

How to Minimize Surcharges in Practice

Start by asking for a full charge breakup, not just a freight headline. You want base ocean freight, every surcharge, local charges, D&D exposure, and any amendment or cancellation conditions. Maersk’s rate-sheet guidance says to check the effective date, expiry date, applicable commodity, exact geographical scope, inclusive surcharges, and charges that are floating per tariff. If you skip that step, you are not comparing quotes; you are comparing incomplete summaries.

Next, ask a direct question: which lines are fixed, and which are floating? That matters more than many shippers realize. A contract or quoted rate can still sit beside floating surcharges, and current advisories show that emergency charges can move quickly when conditions worsen.

Then, book earlier when peak pressure is building. Maersk’s peak-season guidance says PSS and higher freight rates become standard during tight-capacity periods, and explicitly recommends securing space in advance to save costs and guarantee availability. Waiting until cargo-ready often means paying the market’s worst behavior.

Also, freeze your documents earlier than you think you need to. Documentation fees themselves may be small, but shipment changes create rework, delays, and downstream penalties. Clean shipping instructions, correct consignee data, accurate weights, and stable cargo descriptions reduce both direct document charges and indirect delay costs.

Finally, treat free time like inventory, not like a courtesy. Pre-clear customs where possible, align truck planning before arrival, know the last free date, and track empty return obligations. Carriers already give you the reference points; the savings come from using them.

Importer Checklist Before You Approve the Quote

• Ask for the quote in three buckets: base freight, local charges/surcharges, and penalty-risk items like D&D.

• Mark each surcharge as inclusive, floating, or avoidable through execution.

• Confirm whether fuel is showing up as BAF, MFR, ITC, EBS, or another carrier label.

• Check if CAF is applicable on that specific trade and whether exchange-rate risk is already embedded elsewhere.

• Ask whether OHC and DHC are separate from the ocean rate.

• Book early if the lane is approaching peak or disruption-driven tightness.

• Lock shipping instructions and consignee details before cut-off to avoid avoidable document rework.

• Track free days and last free date before the vessel even arrives.

• If the shipment is on a U.S. trade, validate D&D invoice contents before paying.

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Mistakes to Avoid

Comparing only the base rate
This is the most common mistake. Hapag-Lloyd and Maersk both make clear that bunker, terminal, security, peak, and contingency lines can sit outside the ocean base.

Assuming every surcharge is unavoidable
Fuel and terminal charges may be harder to remove, but D&D, some document fees, and many change-related costs are often execution failures, not market inevitabilities.

Treating free time casually
Free time is a measurable cost window. If you are not planning against it, you are planning to pay for it.

Booking late into peak season
When demand rises, PSS and higher freight rates become normal. Late booking weakens both price and control.

Ignoring floating-rate language
A rate can look fixed and still carry floating surcharges. Maersk’s own rate-sheet guidance says non-inclusive surcharges can change during rate validity.

Final Takeaway

Surcharges stop feeling mysterious once you separate them into the right buckets. BAF and other fuel lines are about energy cost and compliance. CAF is about currency risk. OHC, DHC, security, and carbon lines are structural commercial charges. Documentation and change fees are process costs. Demurrage and detention are often preventable penalties. And contingency surcharges appear fastest when markets turn volatile.

That is why the best way to minimize surcharges is not to fight every line item blindly. It is to get a full quote breakup, identify what is inclusive versus floating, book early when markets tighten, lock documents early, protect free time, and use tools that give you real visibility into rates, schedules, and shipment execution. For Cogoport customers, that is where the platform becomes more than a booking tool; it becomes a cost-control tool.

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References

1. Maersk, “Glossary of shipping terms.” Used for definitions of BAF, CAF, all-in/all-inclusive pricing, OHC/DHC, demurrage, detention, and free time.

2. Maersk, “Surcharge Definition.” Used for BAF as 0.5% sulphur fuel-related, documentation fees, EDI fee, carbon charges, congestion fee, EBS, ECS, and ERS.

3. Maersk, “How to find rate sheet details?” Used for inclusive vs floating surcharges, rate applicability, effective and expiry dates, and charge review.

4. Maersk, “India Imports.” Used for the free-days and last-free-date calculator reference on demurrage and detention planning.

5. Maersk, “Middle East Operational Update 10,” 13 March 2026. Used for the live example of temporary Emergency Bunker Surcharge and how quickly surcharge levels can change.

6. Maersk, “5 peak logistics periods to prepare for in 2026.” Used for peak season surcharge pressure and the recommendation to book early.

7. IMO, “IMO 2020 – cleaner shipping for cleaner air.” Used for the 0.50% global sulphur cap from 1 January 2020.

8. Hapag-Lloyd, “Find Ocean Tariff Rates and Surcharges.” Used for the standard surcharge categories commonly shown outside the base ocean rate.

9. Hapag-Lloyd, “Find Trade Surcharges – Overview and Info.” Used for MFR/ITC, ETS, additional freetime, Ship Green, controlled atmosphere, dangerous-goods surcharge, and the note that fees may be separate invoice components.

10. Hapag-Lloyd, “Currency Adjustment Factor (CAF) – From/to Middle East, Indian Subcontinent and Africa.” Used for an example of CAF as a trade-specific surcharge.