Fuel Surcharge

A fuel surcharge (FSC) is a variable fee added by carriers on top of the base freight rate to compensate for the cost of fuel, which fluctuates with market prices and significantly affects transportation operating costs. Fuel typically represents 20–40% of a trucking carrier's total operating cost and an even higher proportion for air freight. Rather than repricing base rates constantly, carriers use indexed fuel surcharges that adjust automatically with published fuel price benchmarks.

How Fuel Surcharges Are Calculated

Trucking (FTL and LTL): US truckload and LTL carriers tie their fuel surcharges to the US Energy Information Administration (EIA) weekly diesel retail price, published every Monday. Carrier tariffs contain fuel surcharge tables: when the EIA diesel price falls in a specified range, a specific surcharge percentage applies. As diesel rises, the surcharge percentage increases; as it falls, the surcharge decreases.

For example, a carrier's FSC table might read:

• $3.00–3.09/gallon: 22.5% fuel surcharge
• $3.10–3.19/gallon: 23.0% fuel surcharge
• $3.70–3.79/gallon: 29.0% fuel surcharge

The surcharge is applied as a percentage of the linehaul rate (not the total invoice including accessorials).

Parcel carriers (UPS/FedEx): Apply separate fuel surcharges to ground and express services, updated weekly based on the EIA index. During 2022–2023, FedEx and UPS fuel surcharges reached 28–34% on ground services — a significant cost driver for e-commerce shippers.

Air freight (BAF): Airlines use a Bunker Adjustment Factor tied to jet fuel prices. Air cargo fuel surcharges are typically quoted per kg and vary by origin-destination pair.

Fuel Surcharge vs. Base Rate

The practical effect of fuel surcharges is that the "base rate" shown in carrier rate cards understates the true cost. A shipper negotiating a "12% discount" on base rates may be giving back much of that discount through a non-discounted fuel surcharge. Some shipper contracts explicitly apply negotiated discounts to the combined base rate + fuel surcharge to prevent this.

Managing Fuel Surcharge Exposure

• Negotiate all-in rates: Some contracts quote "fuel-inclusive" rates that provide cost predictability
• Fuel surcharge cap agreements: Negotiate a maximum FSC percentage regardless of how high diesel prices rise
• Modal optimization: Shifting freight from air to ocean when time permits dramatically reduces fuel cost exposure (ocean freight fuel cost per ton-mile is ~50× lower than air)
• Freight audit: Verify that fuel surcharges are calculated using the correct EIA index date and the applicable rate tier

During the 2022 fuel price spike, when diesel exceeded $5.50/gallon in the US, fuel surcharges on long-haul TL shipments reached 40%+ — representing $3,000+ in additional cost on a coast-to-coast load. Hedging and surcharge management became strategic priorities for high-volume shippers.