Are You Overpaying for Fuel Surcharges? What Shippers Need to Know Right Now
If you're a shipper moving cargo on east-west ocean trade lanes, there's a question worth asking urgently: are you being charged twice for the same fuel price increase? According to maritime analyst Drewry, the answer for many shippers is likely yes — and the financial consequences could be significant, even as negotiations work toward a permanent end to the Iran conflict that upended global crude oil supplies.
Understanding how fuel surcharges work, and why the current moment demands a close review of your shipping contracts, could save your business a substantial amount of money before the dust fully settles on one of the most disruptive periods in modern ocean freight history.
How the Iran Conflict Sent Fuel Costs Soaring
The escalation of the Iran conflict effectively shut down Persian Gulf shipping and placed a chokehold on global crude oil supplies almost overnight. The downstream effect on fuel costs for ocean carriers was immediate and severe. The price of benchmark diesel fuel climbed from approximately $506 per metric ton on February 27, 2026 — the day before the U.S. attacked Iran — to $961.50 per metric ton by March 19, 2026. That represents a staggering increase of roughly 90% in less than three weeks.
For carriers already operating on tight margins, this kind of fuel price shock demanded a rapid response. And the industry's response came in two forms: the introduction of emergency bunker surcharges layered on top of existing contractual mechanisms, and the gradual upward adjustment of standard Bunker Adjustment Factor rates. Both of these cost pass-throughs sound reasonable in isolation. Together, they created a serious problem for shippers.
The Double-Billing Problem: BAF and Emergency Bunker Surcharges
To understand why shippers may be paying twice, it helps to understand how fuel-related ocean freight charges are typically structured.
The Bunker Adjustment Factor, or BAF, is a standard mechanism embedded in most ocean freight contracts. It is designed to automatically adjust freight rates in response to changes in fuel prices over time. BAF rates are generally calculated on a quarterly or monthly basis using benchmark fuel price indexes, and they are meant to ensure that carriers are compensated fairly when fuel costs rise — without requiring constant renegotiation of base freight rates.
When the Iran conflict caused fuel prices to spike dramatically, carriers moved quickly. Rather than waiting for the slower, systematic BAF adjustment cycle to catch up with the new price reality, many carriers introduced emergency bunker surcharges — one-time or short-term fees applied immediately to shipments to cover the sudden increase in fuel costs.
The problem, as Drewry clearly identifies, is that these two mechanisms were often applied simultaneously and to the same underlying fuel cost increase. Carriers collected emergency bunker surcharges to cover the immediate fuel price spike, and then BAF rates were subsequently adjusted upward to reflect those same higher fuel prices in the standard quarterly recalculation. The result: shippers paid for the same fuel cost increase twice.
"Fuel-related charges more than doubled following the escalation of the Iran conflict, as carriers introduced emergency bunker surcharges while standard BAF mechanisms gradually adjusted to higher bunker prices," Drewry noted. "This created a challenging environment for shippers, who faced not only rising transportation costs but also the risk of paying twice for fuel price increases."
Why This Is Still a Problem Even as the Conflict Winds Down
One might assume that as ceasefire negotiations progress and fuel prices begin to normalize, the double-billing problem resolves itself. Unfortunately, that is not necessarily the case. Drewry warns that shippers could face a nasty postwar surprise even after hostilities formally end.
The reason is contractual inertia. Emergency surcharges may have been written into short-term amendments or addendums to freight contracts in ways that do not automatically expire when fuel prices fall. Meanwhile, BAF rates that were adjusted upward during the crisis may take multiple quarters to fully recalibrate downward, depending on how the benchmark indexes move and how contracts are structured. Shippers who do not actively audit their charges and renegotiate where appropriate may continue overpaying long after the fuel price spike itself has reversed.
What Shippers Should Do Right Now
The urgency here is real, and the steps shippers should take are concrete. Now is the time to act, not after the next quarterly invoice arrives.
- Audit your current freight invoices in detail. Line-item review every fuel-related charge you are being billed, including base freight rates, BAF adjustments, and any emergency or ad hoc bunker surcharges. If you see both BAF and emergency surcharge line items covering the same billing period, you have grounds to question whether you are being double-billed.
- Review your contractual BAF methodology. Understand exactly how your BAF is calculated — what index it references, how frequently it is updated, and what lag period applies. This will tell you whether a recently applied emergency surcharge was covering a period that BAF has now also adjusted to reflect.
- Engage your freight forwarder or logistics provider immediately. If you use a third-party logistics partner, task them with conducting a surcharge reconciliation. Experienced forwarders will know how to identify overlapping fuel cost recovery charges and negotiate credits or adjustments with carriers.
- Renegotiate proactively. Use the current moment — while postwar fuel price normalization is actively underway — as leverage to renegotiate fuel surcharge terms going forward. Push for clear contractual language that explicitly prevents emergency surcharges from being applied during periods when BAF already accounts for the same price movement.
- Benchmark against industry peers. Work with a supply chain advisor or use available market data to compare your all-in freight costs on key trade lanes against prevailing market rates. If you are significantly above market, fuel charge duplication may be a key reason why.
The Bigger Lesson for Freight Contract Management
The Iran conflict and the fuel surcharge double-billing issue it exposed is a powerful reminder that freight contract management is not a set-it-and-forget-it exercise. Ocean freight costs are complex, volatile, and heavily influenced by geopolitical events that no shipper can fully predict. What shippers can control is how rigorously they monitor, audit, and manage the charges they actually pay.
Maritime analysts like Drewry provide an important service by flagging systemic issues in the market — but it falls to individual shippers and their logistics partners to translate that intelligence into action. The shippers who come out of this period in the best financial position will be those who reviewed their contracts now, pushed back on duplicative charges, and put in place clearer contractual protections before the next crisis arrives.
Bottom Line
Fuel surcharge duplication is not a minor bookkeeping nuisance. With benchmark diesel prices having nearly doubled during the peak of the Iran conflict disruption, the dollar amounts at stake on high-volume trade lanes are substantial. Whether you are shipping FCL or LCL cargo across transpacific, Asia-Europe, or transatlantic lanes, a careful review of your BAF and emergency bunker surcharge history since late February 2026 is not optional — it is essential. The window to recover overcharges and reset your contractual terms on favorable ground is open right now. Don't wait until it closes.