What is Fuel Surcharge?
Fuel surcharge (FSC) is an additional charge added to freight rates to compensate carriers for fluctuating diesel fuel costs. Understanding FSC helps you ensure you're not losing money when fuel prices spike.
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O TruckingWhat is Fuel Surcharge (FSC)? Trucking Guide 2026
How Fuel Surcharge Works
Fuel surcharge adjusts your payment based on current diesel prices compared to a baseline. When fuel prices rise, your FSC increases. When they fall, it decreases. This protects both carriers and shippers from fuel price volatility. Most FSC tables reference the weekly diesel report from the U.S. Energy Information Administration.
Standard FSC Calculation
(Current Diesel - Base Price) ÷ MPG × Miles = FSC
Example Calculation:
- Current diesel: $4.25/gallon
- Base price: $1.20/gallon
- MPG assumption: 6 MPG
- Trip distance: 800 miles
Result:
- ($4.25 - $1.20) ÷ 6 = $0.508/mile
- $0.508 × 800 = $406.67 FSC
- This gets added to your line-haul
FSC Rate Table Example
Most brokers use an FSC table that assigns a per-mile rate based on diesel price ranges. Load boards like DAT also publish average FSC benchmarks to help carriers compare offers:
| Diesel Price (DOE) | FSC Per Mile |
|---|---|
| $3.50 - $3.59 | $0.38 |
| $3.60 - $3.69 | $0.40 |
| $3.70 - $3.79 | $0.42 |
| $3.80 - $3.89 | $0.44 |
| $3.90 - $3.99 | $0.46 |
| $4.00 - $4.09 | $0.48 |
| $4.10 - $4.19 | $0.50 |
| $4.20 - $4.29 | $0.52 |
| $4.30+ | $0.54+ |
Watch Out for Low FSC Tables
All-In vs Line-Haul + FSC
All-In Rate
Single price that includes everything - no separate FSC.
- + Simple, easy to compare
- + No surprises at invoice
- - Locked in if fuel rises
- - No protection from spikes
Line-Haul + FSC
Base rate plus variable fuel surcharge.
- + Protected when fuel rises
- + Better for long-term lanes
- - FSC may be inadequate
- - More complex invoicing
Calculate Your Real Fuel Cost Per Mile
Where to Find Diesel Prices
DOE Weekly Retail Price
Official government benchmark used by most FSC tables. Updated every Monday at eia.gov
Truck Stop Diesel Prices
GasBuddy, Trucker Path, and fleet fuel card apps show real-time prices. Useful for planning fuel stops and comparing to DOE average.
Fuel Surcharge Guide Collection
Fuel Surcharge Explained
Complete guide to FSC calculation methods and red flags
FSC Rates 2026
Current per-mile rate tables by diesel price
Negotiate Fuel Surcharge
5-step process to get fair FSC from brokers
All-In Rate vs FSC
When each pricing model wins
DOE Diesel Index
The government benchmark for FSC calculations
Rate Confirmation
Verify FSC is included in your rate con
Fuel Surcharge FAQ
Common questions about FSC in trucking
How is fuel surcharge calculated?
FSC is typically calculated using the DOE (Department of Energy) national diesel average. The formula varies by carrier/broker but usually: (Current diesel price - Base price) ÷ MPG × Miles = FSC. Most use 5-6 MPG as the standard. If diesel is $4.00/gal with a $1.20 base at 6 MPG on a 500-mile trip: ($4.00-$1.20) ÷ 6 × 500 = $233 FSC.
What is a good fuel surcharge rate?
A fair FSC should cover your actual increased fuel costs. As of 2026, rates typically range from $0.40-0.65 per mile depending on diesel prices. If a broker offers less than $0.35/mile when diesel is over $4.00, you're likely losing money on fuel.
Should I accept all-in rates or line-haul plus FSC?
Line-haul plus FSC protects you when fuel prices rise - your FSC increases automatically. All-in rates lock you in regardless of fuel costs. For consistent lanes, FSC-based pricing is usually better. For spot market loads, all-in can be fine if you calculate your fuel costs properly.
How often does fuel surcharge change?
Most FSC tables update weekly based on the DOE diesel price report (released every Monday). Some brokers use the previous week's average, others use current pricing. Verify which week's fuel price the broker is using in your rate confirmation.
Can I negotiate fuel surcharge?
Yes, FSC is negotiable. If a broker's FSC table uses outdated base prices or low MPG assumptions, push back. You can also negotiate the base fuel price threshold or the MPG calculation. Every penny per mile adds up over thousands of miles.
We Negotiate Fair Fuel Surcharges
Our dispatchers fight for proper FSC coverage. We don't accept low-ball fuel surcharges that eat into your profits.