In international transportation and import-export operations, businesses often encounter various surcharges in addition to the basic freight rate. One of the most common charges is FSC (Fuel Surcharge).

So, what exactly is FSC, how is it calculated, and what should businesses know to effectively control logistics costs? Let's explore the details with SongWin Logistics in the article below.

What Is FSC?

FSC stands for Fuel Surcharge, a supplementary charge imposed by air, sea, or road carriers in addition to the basic freight rate to offset fuel costs when global fuel prices fluctuate significantly.

Within the logistics industry's cost structure, fuel expenses typically account for 20% to over 40% of total transportation costs. When oil prices rise sharply, carriers cannot continuously adjust freight rates. Therefore, FSC serves as a flexible mechanism to balance operating costs and maintain stable transportation services.

Key Characteristics of FSC in Logistics

1. Fluctuates Based on Market Fuel Prices

Unlike base freight rates, FSC changes regularly depending on:

• Global Brent crude oil prices

• Jet fuel prices

• Marine bunker fuel prices

• Individual carrier adjustment policies

Depending on the carrier, FSC may be updated weekly, monthly, or quarterly.

2. Applied Across Most Transportation Modes

Air Freight

FSC is one of the most significant surcharges in air cargo transportation. It is typically calculated based on the chargeable weight of the shipment.

Some airlines may also list this surcharge as MYC or Fuel Charge in their quotations.

Ocean Freight

In sea freight, fuel surcharges are commonly known as:

• BAF (Bunker Adjustment Factor)

• Bunker Surcharge

These charges are usually applied per container or based on cargo volume.

Road Transportation

Trucking companies often calculate FSC as a percentage of the trucking rate to compensate for fuel costs associated with domestic transportation.

3. Helps Share Risk Among Stakeholders

FSC enables carriers to mitigate the impact of fuel price volatility while maintaining service quality and supply chain stability.

For import-export businesses, understanding FSC allows for more accurate logistics cost forecasting and budgeting.

Common FSC Calculation Methods

Each carrier may have its own calculation formula. However, in practice, FSC is generally calculated using one of the following methods.

Method 1: Percentage of Freight Charges

This method is commonly used for:

• International express services

• Road transportation

• Domestic logistics services

Formula:

FSC = Base Freight Rate × FSC Percentage (%)

Example:

• Freight charge: VND 5,000,000

• FSC rate: 12%

Calculation:

FSC = 5,000,000 × 12% = VND 600,000

Total transportation cost:

5,000,000 + 600,000 = VND 5,600,000

Method 2: Based on Chargeable Weight

This method is widely used in international air freight.

Formula:

FSC = Chargeable Weight × FSC Rate per Kilogram

Example:

• Chargeable weight: 1,000 kg

• FSC rate: USD 0.45/kg

Calculation:

FSC = 1,000 × 0.45 = USD 450

Businesses should note that FSC rates may vary depending on airline routes and market conditions.

Is FSC Required for Customs Declaration?

Yes.

According to customs valuation regulations for imported goods, transportation costs and surcharges incurred before the goods arrive at the first port of entry in Vietnam are generally included in the customs value used for duty calculation.

Therefore:

• FSC incurred before cargo arrives at the import seaport or airport must be added to transportation costs.

• The surcharge should be fully declared in customs documentation.

• Failure to declare FSC accurately may result in incorrect customs valuation and potential clearance risks.

Businesses should coordinate closely with their freight forwarder or customs broker to ensure accurate declarations.

If you are unsure how to declare FSC on customs documents or need advice regarding import customs valuation, SongWin Logistics is ready to provide professional guidance and compliance support.

How to Optimize FSC Costs

Given the continuous fluctuations in fuel prices, businesses can implement several strategies to better manage logistics expenses.

Request Transparent Quotations

When receiving quotations from carriers or freight forwarders, clarify:

• Whether FSC is included in the quoted rate

• Whether the quotation is an all-inclusive rate or only the base freight charge

• Additional surcharges such as SSC, Security Fee, and Handling Fee

A detailed cost breakdown helps prevent unexpected expenses.

Negotiate FSC Terms in Long-Term Contracts

For recurring or long-term transportation agreements, businesses should:

• Clearly define FSC adjustment mechanisms

• Establish fuel price fluctuation thresholds

• Agree on surcharge update frequency

This approach helps minimize financial risks and facilitates more accurate budgeting.

Monitor Fuel Price Trends

Regularly tracking:

• Global Brent crude oil prices

• Aviation fuel prices

• FSC announcements from carriers

can help businesses select optimal shipping periods and reduce overall logistics costs.

If your company needs the latest FSC updates for specific trade lanes or wants to develop a cost-efficient logistics strategy, SongWin Logistics is always available to provide tailored support and consultation.

Why Choose SongWin Logistics?

As a professional international logistics and transportation service provider, SongWin Logistics is committed to:

• Transparent quotations with detailed surcharge breakdowns

• Cost optimization solutions for transportation and logistics

• Accurate customs declaration support

• Access to diversified global transportation networks via sea, air, and road freight

• Comprehensive support in supply chain management and optimization

Our team of experienced logistics specialists is always ready to assist with inquiries regarding FSC, international freight rates, customs procedures, and logistics surcharges associated with import-export operations.

Conclusion

FSC is one of the most important and variable surcharges in the logistics industry. Understanding its nature, calculation methods, and application mechanisms enables businesses to forecast budgets more accurately, select suitable transportation solutions, and minimize unexpected logistics expenses.

If your company requires consultation on international freight rates, logistics surcharges, FSC calculations, or efficient import-export solutions, contact SongWin Logistics today for professional guidance, transparent quotations, and prompt support from our experienced team.

SONGWIN INTERNATIONAL LOGISTICS VIETNAM CO., LTD

📍 Address: 344 Nguyen Trong Tuyen Street, Tan Son Hoa Ward, Ho Chi Minh City, Vietnam

📞 24/7 Hotline: +84 83 681 3969 | +84 373 262 105

📧 Email: Sales2@songwinlog.com

SongWin Logistics – Reputation Builds the Brand, Professionalism Creates Success.