
A fuel surcharge is a fee billed to shipping clients to offset the additional cost of fuel that arises due to fuel price fluctuations. Fuel surcharges are calculated using the fuel baseline price, average miles per gallon, and average price of diesel fuel at the time of shipment. The fuel surcharge amount is charged on a mileage basis, reflecting the extra cost of the fuel used for the specific trip. Carriers typically increase their fuel surcharge by one penny for every 6-cent increase in diesel price above their established baseline. For example, if the fuel baseline price is $2.75, the average miles per gallon is 6, and the average diesel price at the time of shipment is $3.50, the fuel surcharge would be $0.13 per mile.
| Characteristics | Values |
|---|---|
| Definition | A fuel surcharge is a separate, additional fee added above the current contract rate when the cost of fuel exceeds a defined level. |
| Who it applies to | Small carriers with direct shipper freight contracts must incorporate a fuel surcharge. |
| Who it does not apply to | Small business owner-operators and motor carriers do not need government approval or to file an application with DOT to implement a fuel surcharge. |
| Calculation factors | Fuel baseline price, average miles per gallon (fuel consumption), and average price of diesel fuel at the time of shipment. |
| Calculation methods | Percentage-based, ratio-based, or a simple formula: (updated fuel price - original fuel price) / miles per gallon x distance traveled. |
| Calculation tools | EIA website, altLINE fuel surcharge calculator. |
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What You'll Learn

Calculating the fuel baseline price
Fuel surcharges are fees billed to shipping clients to offset the additional cost of fuel that arises due to fuel price fluctuations. Fuel prices can be impacted by several factors, including political and manufacturing reasons, natural disasters, and the global oil price.
The fuel baseline price is a crucial component of calculating the fuel surcharge. This value refers to the diesel price per gallon used when estimating costs and setting rates. It is typically the average cost of fuel at the time the rates were determined.
To calculate the fuel baseline price, you need to consider the cost of diesel fuel at the time the shipment was booked. This information can be obtained from the US Energy Information Administration (EIA), which provides up-to-date data on fuel prices broken down by fuel type and location. The EIA updates its fuel prices every Monday, allowing businesses to review the current base fuel price as well as historical average weekly prices.
When calculating the fuel baseline price, you can either use the current fuel price at the time of booking or quote a standard base rate. If a client schedules a delivery in advance, the cost of diesel fuel on that day can be used in the pricing quote. This ensures that the fuel surcharge reflects the most accurate and current fuel prices, helping businesses manage volatile fuel costs effectively.
By establishing a fuel baseline price, businesses can then calculate the fuel surcharge per mile, taking into account factors such as fuel mileage (MPG) and the average price of diesel fuel at the time of shipment. This allows for a dynamic approach to pricing, ensuring that the surcharges are in line with the fluctuating nature of fuel costs.
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Average miles per gallon
For diesel-powered trucks or big rigs, the average fuel consumption is approximately 6 mpg. This figure can vary depending on various factors, including the size and weight of the vehicle, engine specifications, driving conditions, and load being carried. It's important to note that mpg can differ significantly between different types of vehicles and engines.
When calculating fuel surcharges, knowing the average miles per gallon is essential. This value represents the fuel efficiency of the vehicle or fleet for which the surcharge is being calculated. By dividing the total miles travelled by the number of gallons of fuel consumed, you can determine the average mpg. This figure provides a baseline to assess the fuel efficiency and, subsequently, the fuel costs associated with operating the vehicle.
Fuel surcharges are typically calculated when the cost of fuel exceeds a defined level. By taking into account the average miles per gallon, along with the fuel baseline price and the current average diesel price, businesses can determine the appropriate surcharge to offset the increased fuel costs. This surcharge is usually charged per mile and added as a separate fee to the base rates, reflecting the extra fuel costs incurred during a specific trip.
Fuel surcharge calculators, such as those offered by OOIDA and altLINE, streamline the process of calculating surcharges by taking into account factors like baseline fuel price and average miles per gallon. These tools help businesses and owner-operators in the trucking industry effectively manage their fuel costs and ensure they are compensated for fluctuations in diesel prices.
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Average diesel price at the time of shipment
The average diesel price at the time of shipment is a crucial factor in calculating diesel fuel surcharge fees. Fuel surcharges are additional fees billed to shipping clients to offset the rising fuel costs due to price fluctuations. With fuel costs reaching record highs, it's essential for businesses to implement fuel surcharges to manage the increased financial strain.
The United States Energy Information Administration (EIA) is a valuable resource for determining the average diesel price. The EIA updates its fuel prices every Monday, providing detailed information on fuel types and locations. This includes both gasoline and diesel prices, broken down by region, state, or city. By referring to the EIA data, businesses can establish a fuel price baseline, which serves as a reference point for calculating surcharges.
The fuel base price, or the amount quoted to the shipping client at the time of booking, is a critical component of the calculation. Businesses have the flexibility to use either the current fuel price or a standard base rate. If a delivery is scheduled in advance, the cost of diesel fuel on that day can be used in the pricing quote. This ensures that clients are aware of the potential surcharge and can plan their expenses accordingly.
Additionally, the average diesel price at the time of shipment is essential for carriers who adjust their fuel surcharge based on price increases above their established baseline. For instance, a carrier with a fuel price baseline of $2.50 may decide to implement a surcharge when diesel prices surpass this level. If the price rises to $2.56 per gallon, a fuel surcharge of $0.01 per mile might be applied. This approach allows carriers to pass on the additional fuel costs to their customers in a structured manner.
In summary, the average diesel price at the time of shipment plays a pivotal role in calculating diesel fuel surcharge fees. By leveraging resources like the EIA, businesses can establish a fuel price baseline and determine the fuel base price quoted to clients. This information empowers businesses to make informed decisions about implementing fuel surcharges, ultimately helping them manage the financial challenges posed by volatile fuel prices.
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Percentage-based systems
A fuel surcharge is a separate, additional fee added when the cost of fuel exceeds a defined level. This fee is charged to offset the additional cost of fuel that arises due to fuel price fluctuations.
One way to calculate a diesel fuel surcharge is through a percentage-based system. This system calculates the surcharge as a fixed percentage related to a one-cent increase in the cost of a gallon of fuel. For example, if a company sets a fuel surcharge of 10% for every cent increase in the cost of a gallon of fuel, and the price per gallon rises from $3.00 to $3.03, the total increase in price would be 30% (10% X 3). This would result in a fuel surcharge of $0.30 per gallon.
The percentage-based system can also be applied to calculate the fuel surcharge per mile. To do this, the original fuel price is subtracted from the updated fuel price to determine the change in cost per gallon. This value is then divided by the truck's miles per gallon to calculate the fuel cost per mile. Finally, the cost per mile is multiplied by the distance travelled, resulting in the fuel surcharge for the trip.
It is important to note that the fuel surcharge will be independent of the base rates and will be shown separately on the freight bill. The surcharge amount is charged on a mileage basis, reflecting the extra cost of fuel used for the specific trip. Additionally, the fuel surcharge rates are updated monthly by shipping companies to ensure that customers are charged accurate and up-to-date prices per gallon.
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Ratio-based systems
When calculating a diesel fuel surcharge, it is important to note that there is no standardised method. Each company has its own approach, and fuel surcharges are not regulated by any laws. One common method is the ratio-based system.
The ratio-based system calculates the fuel surcharge as a ratio of the increase in fuel price to the base fuel price. For example, if the base fuel price is $3.00 and the price increases to $3.03, the fuel surcharge rate would be 30% (calculated as 10% multiplied by 3, where 10% is the rate of increase for every cent). The rate of increase for every cent (10% in this case) is determined by the company.
Another way to calculate a ratio-based fuel surcharge is to divide the increase in fuel costs by the truck's miles per gallon to get a fuel cost per mile. This cost per mile is then multiplied by the distance travelled. For example, if the fuel costs have increased by $0.50 and the truck gets 6 miles per gallon, the fuel cost per mile is $0.083 ($0.50 divided by 6). If the distance travelled is 100 miles, the fuel surcharge is $8.30 (calculated as $0.083 multiplied by 100).
The fuel surcharge is usually calculated independently of base rates and is shown as a separate entry on the freight bill. The surcharge is charged on a per-mile basis, reflecting the extra cost of fuel for that specific trip.
It is important to note that fuel surcharge costs can be negotiated by both the driver and the shipper, and they are reviewed and updated regularly to ensure accuracy and reflect up-to-date prices.
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Frequently asked questions
A fuel surcharge is a fee billed to shipping clients to offset the additional cost of fuel that arises due to fuel price fluctuations.
Fuel surcharge rates are updated monthly by shipping companies to ensure customers are charged accurate and up-to-date prices per gallon.
You need three numbers to calculate a diesel fuel surcharge: the fuel baseline price, average miles per gallon (fuel consumption), and average price of diesel fuel at the time of shipment.
The fuel baseline price is the cost of diesel fuel at the time the shipment was booked. You can find this information on the EIA website.
First, subtract the original fuel price from the updated price. Then, divide that number by the truck's miles per gallon to create a fuel cost per mile. Finally, multiply the cost per mile by the distance travelled.











































