Fuel Surcharge Explained
How fuel surcharges work, how they're calculated, and how to make sure you're getting paid what you're owed. FSC appears on 93% of loads.
93%
of loads include FSC
$0.30-$0.50
typical FSC per mile
Weekly
DOE update frequency
15-25%
of total revenue (avg)
O Trucking Editorial Team
Trucking Industry Experts
Fact-Checked by O Trucking Dispatch Team
5+ years verifying FSC on 500+ loads monthly
This article was written by the O Trucking editorial team with 9+ years of combined trucking industry experience. Learn more about us.
O TruckingFuel Surcharge Explained: 2026 Trucking FSC Calculator & Rates
Fuel Surcharge Basics
What is a fuel surcharge?
A variable fee added to freight rates to offset fluctuating diesel prices. It adjusts weekly based on the DOE diesel index.
How often does it change?
Most FSC tables update weekly, following the U.S. Energy Information Administration (EIA) diesel price report released every Monday.
Who pays the fuel surcharge?
Shippers pay FSC to carriers through brokers. It's supposed to pass through to offset your actual fuel costs.
Is FSC taxable income?
Yes, FSC is part of your gross revenue and is taxable. However, you can deduct actual fuel expenses.
FSC Calculation Methods
Per-Mile FSC
Most common. A cents-per-mile amount based on current diesel prices.
Pros:
- Easy to calculate
- Transparent
- Industry standard
Cons:
- Doesn't account for MPG differences
- Based on averages
Percentage of Line Haul
FSC calculated as percentage of base freight rate.
Pros:
- Scales with load value
- Simple math
Cons:
- Doesn't reflect actual fuel costs
- Can be manipulated
Flat Rate FSC
Fixed fuel surcharge regardless of diesel prices.
Pros:
- Predictable
- Easy budgeting
Cons:
- Doesn't adjust to market
- Risk if diesel spikes
Sample FSC Table (6.5 MPG Base)
| DOE Diesel Price Range | FSC Per Mile |
|---|---|
| $3.00 - $3.09 | $0.28 |
| $3.10 - $3.19 | $0.30 |
| $3.20 - $3.29 | $0.32 |
| $3.30 - $3.39 | $0.34 |
| $3.40 - $3.49 | $0.36 |
| $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 |
Based on standard 6.5 MPG and $1.20/gal base diesel. Your actual FSC may vary. See complete 2026 FSC rate table →
Quick FSC Calculator
Example: 500 mile load at $3.65/gal diesel
This should be shown separately on your rate confirmation.
How Dispatchers Handle FSC
As a dispatch service that books loads daily, we see fuel surcharge issues firsthand. Here's what we've learned about FSC from dispatching thousands of loads:
We check FSC before booking
Before confirming any load, we verify that the fuel surcharge matches the current DOE diesel price. If a broker's FSC is more than $0.04/mile below the standard rate, we either negotiate up or walk away from the load.
FSC must be a separate line item
We require FSC shown separately on every rate confirmation. This protects our carriers when diesel prices change mid-contract and makes invoicing transparent.
Equipment matters for FSC
Standard FSC tables assume 6.5 MPG (dry van). Reefer carriers burn extra diesel for the refrigeration unit, so we negotiate reefer fuel premiums. Flatbed carriers face aerodynamic penalties. We account for equipment-specific fuel costs. See our 2026 rates guide for equipment-specific FSC data.
Need help with FSC negotiation? See our complete FSC negotiation guide.
FSC Red Flags to Watch For
FSC not shown separately on rate confirmation
Risk: May not be getting actual FSC - could be buried in lower line haul
Action: Always request FSC shown as separate line item
FSC locked for multi-week period
Risk: If diesel rises, you absorb the increase
Action: Negotiate weekly FSC adjustments on longer contracts
Base rate seems too high with no FSC
Risk: They may have lowered FSC to 0 and raised line haul - you lose when diesel drops
Action: Ask for the FSC schedule being used
Percentage FSC on low-rate loads
Risk: 20% of $1.50/mi = $0.30 FSC, which may be below actual cost
Action: Prefer per-mile FSC on low-rate freight
Try Our Free Fuel Cost Calculator
Estimate fuel costs for any trip based on distance and MPG
Open Fuel Cost CalculatorWe Verify FSC on Every Load
Our dispatch team ensures proper fuel surcharge is included on every rate confirmation. No buried FSC, no surprises — you get what you're owed.