What Is CAF (Currency Adjustment Factor), and How Does Currency Affect Freight Surcharges?

A freight quote rarely consists of a single number. Alongside the base rate for moving a container or a shipment from origin to destination, a carrier's rate sheet often lists a handful of separate surcharges, each one addressing a specific cost risk the base rate doesn't absorb on its own. One of the less intuitively named, but conceptually straightforward, is CAF — the Currency Adjustment Factor.

What CAF Actually Is

CAF stands for Currency Adjustment Factor, and it's a surcharge carriers apply to offset the risk that comes from exchange-rate movement between the currency a freight rate is quoted and invoiced in and the currency the carrier's actual operating costs are paid in. It's not a fee for a physical service like handling or documentation — it's a financial adjustment tied specifically to currency risk, distinct from the surcharges that address fuel cost or seasonal demand.

The basic logic is this: a carrier sets a freight rate expecting a certain level of revenue once that rate is eventually converted, directly or indirectly, into the currency it needs to cover its costs. If exchange rates move unfavorably between the time the rate was set and the time the shipment actually happens, the carrier's real revenue in its own operating currency can shrink even though the quoted rate hasn't changed. CAF is the mechanism used to adjust for that gap.

Why Currency Mismatch Happens in the First Place

International freight rates are very commonly quoted in a small number of major trading currencies, with USD being especially common on many long-haul ocean trades regardless of which two countries a shipment actually moves between. That convention exists for practical reasons — it gives carriers, shippers, and forwarders a shared reference currency across many trade lanes rather than negotiating in every local currency involved.

But a carrier's actual costs of doing business at any given port or country are overwhelmingly local: port and terminal charges, local agency staff, inland transport arrangements, and a range of other operating costs are paid in the local currency of wherever the carrier is operating. This creates a structural mismatch — revenue quoted in one currency, costs incurred in another — that exists on almost every international trade lane to some degree, and it's this mismatch that CAF is designed to address.

How CAF Is Typically Structured

CAF is typically expressed and applied as a percentage adjustment on top of the base freight rate, rather than as a flat fixed amount. In illustrative terms, a carrier might set a CAF percentage and apply it to the base ocean freight for shipments on a given trade lane, producing an additional charge that scales with the size of the base rate rather than being the same fixed sum regardless of shipment value. The specific percentage a carrier applies, and how it's calculated, is set by that carrier's own commercial and financial teams based on the currency risk they're managing — this is a structural description of how the mechanism generally works, not a stated current rate, since actual CAF percentages vary by carrier, trade lane, and time period and are not something to assume without checking a current rate sheet.

CAF is not a one-time adjustment; carriers typically review and revise it periodically — the specific frequency varies by carrier and is generally published or communicated as part of that carrier's tariff terms — to keep the surcharge aligned with how exchange rates have actually moved since the previous review, rather than letting it drift indefinitely out of step with real currency conditions.

CAF Alongside Other Common Surcharges

CAF is one of a family of surcharges that carriers use to isolate specific cost risks from the base freight rate rather than folding every possible cost fluctuation into a single number that would need constant, opaque repricing. BAF, or Bunker Adjustment Factor, plays a similar structural role for fuel cost — it's revised periodically to reflect changes in bunker fuel prices, which are a major and often volatile input cost for ocean carriers. PSS, or Peak Season Surcharge, addresses a different kind of pressure: periods when demand for vessel space is elevated relative to available capacity on a given lane.

What these surcharges share is the underlying logic of separating a specific, identifiable cost or risk factor from the base rate, so that each one can be adjusted on its own schedule as conditions change, rather than requiring the carrier to renegotiate its entire base tariff every time one input shifts. For a shipper reading a rate sheet or invoice, recognizing this pattern — a base rate plus a handful of named, separately-adjusted surcharges — makes it easier to understand why a total quoted freight cost is broken into several line items instead of one number.

Which Trade Lanes and Modes CAF Typically Appears On

CAF is most commonly associated with ocean freight, particularly on trade lanes where the quoted freight currency and the carrier's local operating currency differ significantly, but the underlying concept of a currency-related adjustment can appear in air freight pricing structures as well, under varying naming conventions depending on the carrier. Whether CAF specifically applies to a given shipment depends on the carrier, the trade lane, and that carrier's own tariff structure — it isn't universal across every carrier or every lane, and some carriers may build currency risk into their base rate adjustments rather than listing a separate CAF line item.

Because of this variation, a shipper shouldn't assume CAF automatically applies to every quote, nor assume it definitely doesn't — the only reliable way to know is to check the specific carrier's current rate sheet or ask a forwarder directly for the given trade lane and shipment.

How CAF Shows Up on a Quote or Invoice

When CAF applies, it's typically shown as its own line item on a freight quote or invoice, separate from the base ocean freight and from other surcharges like BAF or PSS. This separation exists precisely so that a shipper can see what portion of the total cost relates to currency adjustment specifically, rather than having it folded invisibly into a single freight number.

Seeing CAF broken out this way is useful context for a shipper comparing quotes or reviewing an invoice: a change in the total quoted freight between two points in time could be driven by a change in the base rate, a change in CAF, a change in BAF, or some combination, and having each surcharge itemized separately makes it possible to identify which factor actually moved rather than treating the total as one opaque figure.

What to Ask a Forwarder About CAF

Because CAF varies by carrier, lane, and review period, it's reasonable for a shipper to ask a forwarder a specific set of questions rather than assuming a consistent figure across all their shipments. Useful questions include whether CAF applies to the specific trade lane being quoted, how frequently the relevant carrier reviews and revises its CAF percentage, and whether the quoted freight rate already includes current CAF or whether it will be added separately at the time of shipment.

It's also reasonable to ask how a forwarder handles a CAF change that happens between the time a quote is given and the time a shipment actually sails — since CAF is reviewed periodically, a shipment booked well in advance could, in principle, be invoiced under a revised CAF percentage by the time it moves, and understanding a forwarder's practice on this point avoids surprises on the final invoice.

CAF on Long-Term Contracts Versus Spot Rates

The way CAF interacts with a freight rate can differ depending on whether a shipper is booking on the spot market or working under a longer-term rate agreement with a carrier or forwarder. On a spot booking, CAF typically reflects whatever the carrier's most recently published percentage is at the time of booking, so it can move from one shipment to the next without much notice. Under a longer-term contract, the way CAF is handled is usually spelled out in the contract terms themselves — some agreements fix the surcharge treatment for the contract period, while others explicitly allow CAF to float with the carrier's periodic revisions even though the base rate stays fixed.

This distinction matters for budgeting: a shipper working from a long-term contract shouldn't assume CAF is automatically locked in just because the base freight rate is, and should check the specific contract language or ask the forwarder directly how CAF is treated for the remaining contract term.