Freight Rate: Definition, Purpose & Real-World Examples
A freight rate is the amount a cargo owner must pay a carrier (shipping line, airline, or trucking company) to move goods from origin to destination, calculated based on weight, volume, distance, and the mode of transport used. It is one of the largest costs in import-export activity, directly affecting a product’s cost price and a business’s profit margin.
Many businesses often confuse the base freight rate with additional surcharges, and are unclear on how container shipping rates are calculated or the legal requirements for posting freight prices. The article below sets out the full definition, purpose, the factors that affect freight rates, how to calculate them, and the current legal basis related to freight rates in Vietnam.
1. What Is a Freight Rate?
A freight rate is the cost that a cargo owner or charterer must pay a carrier to move goods from the point of origin to the destination, determined based on the carrier’s rate schedule, the distance, the weight or volume of the goods, and the specific mode of transport.
A freight rate is typically split into two parts: the base freight (Ocean Freight) — the pure transport cost from origin to destination — and surcharges — additional fees on top of the base freight that cover a carrier’s specific operating costs.
Real-world example: An export shipment to the US is quoted a base freight (O/F) of $2,000 per 40-foot container, but once surcharges such as THC, BAF, and CAF are added, the actual total shipping cost the business pays can reach $2,500-$2,800.
2. The Purpose and Role of Freight Rates
A freight rate plays a decisive role in an import-export business’s price competitiveness, and serves as an important basis for calculating the profitability of each shipment.
- Part of the product’s cost price: the freight rate is a direct cost added to the cost of goods sold, affecting price competitiveness in international markets.
- A basis for negotiating Incoterms: which party bears the freight cost (buyer or seller) depends on the Incoterms rule agreed in the contract.
- Influences the choice of transport mode: businesses weigh speed against cost when choosing sea, air, or road transport.
- Reflects shipping market fluctuations: freight rates move with supply and demand and fuel prices during peak season, reflecting the state of the global logistics industry.
3. Factors That Affect Freight Rates
Freight rates are shaped by many different factors, with shipping distance, cargo weight/volume, and supply-demand fluctuations being the three most influential.
- Shipping distance: the longer the route, the higher the freight rate, due to increased fuel cost and operating time.
- Weight and volume of the goods: freight is calculated based on actual weight or converted volume (CBM), whichever figure is greater.
- Mode of transport: air freight has the highest rate but is the fastest; sea freight has the lowest rate but takes longer.
- Peak season: shipping demand spikes sharply around holidays and Tet, pushing freight rates up according to the laws of supply and demand.
- Fuel prices and exchange rates: fluctuations in oil prices and currency exchange rates directly affect surcharges such as BAF and CAF.
- Type of cargo: dangerous goods, refrigerated cargo, and oversized/overweight cargo typically carry higher rates than ordinary cargo due to special handling requirements.
4. Freight Rate Classification by Mode of Transport
Freight rates are classified by transport mode, each with its own calculation method and unit suited to its operating characteristics.
| Mode | Common Rate Unit | Characteristics |
|---|---|---|
| Sea (FCL) | USD/container (20ft, 40ft) | The lowest rate, suited to large-volume cargo, with a longer transit time |
| Sea (LCL) | USD/CBM (cubic meter) | Suited to small-volume cargo, consolidated into a shared container at a CFS warehouse |
| Air | USD/kg (based on actual or volumetric weight) | The highest rate, the fastest transit time, suited to high-value cargo |
| Road | VND/km or per trip, per ton | Flexible for domestic transport, connecting the port, warehouse, and factory |
5. Base Freight and Common Surcharges
Beyond the base freight rate (Ocean Freight), businesses typically must pay a range of additional surcharges depending on the route, cargo type, and shipping timing.
| Fee | Full Name | Meaning |
|---|---|---|
| O/F | Ocean Freight | The base freight cost from port of origin to destination |
| THC | Terminal Handling Charge | Fee for container handling at the port |
| BAF | Bunker Adjustment Factor | Surcharge for fuel price fluctuations |
| CAF | Currency Adjustment Factor | Surcharge for currency exchange rate fluctuations |
| CIC | Container Imbalance Charge | Surcharge for repositioning empty containers between regions |
| GRI | General Rate Increase | A general rate increase, usually applied during peak season |
| LSS | Low Sulphur Surcharge | Surcharge for sulphur-emission reduction under international maritime environmental rules |
6. How to Calculate Container Shipping Rates Based on CBM and Weight
For LCL and air cargo, the freight rate is calculated based on whichever is greater between the actual weight and the converted volume (CBM), following the “pay whichever is higher” principle.
Formula for calculating the CBM of a single package:
CBM = Length (m) × Width (m) × Height (m)
Converting CBM to chargeable weight (LCL sea freight):
1 CBM is typically converted to the equivalent of 1,000 kg when compared against actual weight to determine the chargeable unit.
Volumetric weight for air freight:
Volumetric Weight = Length × Width × Height (cm) / 6,000
Real-world example: An LCL shipment has a total volume of 3 CBM but an actual weight of only 900 kg. Since 3 CBM converts to the equivalent of 3,000 kg, which is greater than the actual weight of 900 kg, the carrier will charge freight based on the 3 CBM figure (the higher value) rather than the actual weight.
7. Legal Regulations on Posting Container Ocean Freight Rates
Under Decree 146/2016/ND-CP, which regulates the posting of prices and surcharges for container ocean freight services and port service prices, shipping lines operating in Vietnam are required to publicly post their freight rates and surcharges.
- Posting obligation: a shipping line must post its container freight rates and surcharges on its website or at its office, and submit its price declaration to the Vietnam Maritime Administration.
- Notice period for price changes: when adjusting a freight rate or surcharge, the shipping line must post the change at least 15 days before it takes effect.
- Posting currency: surcharges on container freight services and port service prices must be posted in Vietnamese dong.
- Penalties: under Decree 142/2017/ND-CP, which regulates administrative penalties in the maritime sector, a shipping line that fails to post its freight rates and surcharges as required can be fined VND 500,000-1,000,000; failing to fully declare the required information after being reminded by the competent authority can result in a fine of VND 1-3 million.
Note: This regulation is intended to ensure transparency in freight pricing, giving import-export businesses a basis for verification and protecting them from unreasonable surcharges or sudden price increases without prior notice from the carrier.
8. A Real-World Example of Freight Rates
A furniture exporter shipping from Vietnam to Europe receives a base freight (O/F) quote of $1,800 per 40-foot container during a normal month. However, during the year-end peak season, as shipping demand spikes, the carrier adds a GRI surcharge, pushing the total freight up to around $2,500 per container, forcing the business to recalculate its selling price or renegotiate with its import partner.
9. Common Mistakes When Calculating and Negotiating Freight Rates
The most common mistakes when working with freight rates are comparing only the base rate while ignoring surcharges, miscalculating the CBM/weight conversion, or failing to track seasonal price fluctuations.
| Common Mistake | Consequence | How to Fix It |
|---|---|---|
| Comparing only the base rate, ignoring surcharges | Actual cost turns out higher than originally budgeted, affecting profit margin | Request an “all-in” quote (including surcharges) to accurately compare between carriers |
| Miscalculating the CBM/weight conversion | Inaccurate cost estimates, leading to surprises upon receiving the actual freight invoice | Apply the correct CBM conversion formula and confirm it with the carrier before finalizing the booking |
| Not tracking seasonal price fluctuations | Caught off guard by sudden cost spikes during peak season | Monitor rate trends and book and lock in pricing early before peak season |
| Not checking the carrier’s posted price notice | Difficult to detect a carrier raising surcharges without following posting requirements | Cross-check the carrier’s publicly posted rate schedule under Decree 146/2016/ND-CP |
Real-world example: A business compared only the O/F quotes from 3 carriers without asking about accompanying surcharges, and upon receiving the final invoice found the total shipping cost was 20% higher than budgeted due to added THC, CIC, and GRI charges.
10. Frequently Asked Questions About Freight Rates (FAQ)
Does the freight rate include surcharges?
Not by default. The base freight rate (O/F) is purely the transport cost; surcharges such as THC, BAF, and CAF are calculated separately and added to the actual total cost.
Who pays the freight rate — the buyer or the seller?
It depends on the Incoterms rule agreed in the contract — for example, under FOB the buyer bears the main freight, while under CIF the seller has already included freight in the selling price.
How do LCL and FCL freight rates differ in calculation?
FCL freight is calculated per container (20ft, 40ft), while LCL freight is calculated by CBM or actual weight, whichever is greater.
Can a carrier raise its freight rate at any time it wants?
No. Under Decree 146/2016/ND-CP, a carrier must post notice of a rate or surcharge change at least 15 days before it takes effect.
Can a business file a complaint if a carrier fails to post its freight rates?
Yes. A business can report this to the Vietnam Maritime Administration if it finds a carrier not complying with the posting requirements under Decree 146/2016/ND-CP.
Why do freight rates rise sharply at year-end?
Because shipping demand spikes during peak season ahead of the holidays and Tet, causing supply to fall short of demand, prompting carriers to apply a GRI surcharge.
How is volumetric weight calculated for air freight?
Volumetric Weight = Length × Width × Height (cm) / 6,000, which is then compared against the actual weight, with the greater value used to calculate the freight charge.
What should businesses keep in mind when negotiating freight rates?
Request an all-in quote including surcharges, confirm the pricing unit clearly, and monitor the carrier’s publicly posted rate schedule to avoid unreasonable charges.
3W Logistics – Optimizing Freight Costs for Import-Export Businesses
Understanding how freight rates are calculated and the types of surcharges involved helps businesses control their logistics costs effectively. 3W Logistics works alongside import-export businesses to negotiate transparent freight rates and optimize costs for every shipment.
- Transparent, all-in quotes: provides clear quotes including the base rate and related surcharges, helping businesses budget accurately.
- Extensive carrier network: partnerships with multiple shipping lines and airlines to deliver the most competitive rates for each route.
- Consulting on the optimal transport mode: helps businesses weigh sea, air, and road transport to optimize cost and time.
Businesses needing consulting on freight rates and cost-optimized logistics solutions, please contact 3W Logistics directly for a tailored quote.
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Hello, I’m Nguyen Phuong Nhan (Ms. Nina)
I currently serve as Trade Lanes Supervisor at 3W Logistics, with more than 10 years of experience in international logistics and freight forwarding.
My primary responsibility is developing and managing global logistics partnerships, building strategic trade lanes, and working closely with overseas agents to provide reliable and competitive transportation solutions for customers.
I regularly collaborate with agents and logistics partners worldwide to explore new business opportunities, negotiate freight rates, develop trade routes, and support import-export shipments. I also work closely with our sales team to design logistics solutions tailored to specific markets and customer requirements.
My expertise includes Ocean Freight, Air Freight, Trade Lane Development, Global Agent Network Management, International Logistics Solutions, and Import-Export Support.
Through the articles I share on the 3W Logistics website, I aim to provide practical insights into the international logistics industry, global transportation trends, overseas agent cooperation, and effective logistics strategies that help businesses optimize their supply chain operations.
I believe that strong global partnerships and well-developed trade lanes are essential to delivering sustainable logistics solutions and long-term value to customers worldwide.
