PSS – Peak Season Surcharge
PSS (Peak Season Surcharge) is a key term encountered by everyone engaged in international freight transport in shipping containers. In this glossary article, you will find the most comprehensive information for the market – from definition through current examples, trends, real impacts on the supply chain to specific strategies on how to deal with this surcharge.
What is Peak Season Surcharge (PSS)? Definition and Function
Peak Season Surcharge (PSS) is a temporary peak season surcharge applied by shipping companies (shipowners, freight forwarders) during periods when demand for transport capacity significantly exceeds supply – typically during major seasons, such as pre-Christmas months, shopping holidays, or for example before Chinese New Year. This surcharge is added to the basic shipping rate and serves to:
- Compensate for increased operating costs (higher labor costs, fuel, container repositioning)
- Manage demand – higher prices motivate customers to plan shipments more efficiently
- Maintain service quality and capacity – companies can deploy additional vessels, hire more staff, invest in equipment
Why Does PSS Arise?
PSS is a response to market imbalance – when there is a shortage of containers, vessels or space in ports, shippers must regulate demand and simultaneously cover higher costs. Implementing PSS is common practice among all major global players (for example Maersk, CMA CGM, MSC, Hapag-Lloyd).
Key Reasons for PSS Implementation
PSS is not an arbitrary fee – its emergence has deep economic reasons:
- Balancing supply and demand: during peak periods, vessels and containers are overloaded, PSS helps prioritize urgent shipments
- Higher operating costs:
- Labor: higher costs for overtime and hiring temporary workers at ports
- Container repositioning: need to relocate empty containers (for example from Europe back to Asia)
- Port congestion: longer waiting times for vessels, increased handling costs
- Fuel: vessels often sail faster to complete more rotations – higher fuel consumption
- Maintaining services: PSS revenues enable capacity increases (vessel leasing, container leasing)
- Capacity management and eliminating “rolling”: reduces the risk that containers will have to wait for the next vessel due to overcapacity
When is PSS Applied? Main Seasons and Current Trends
Typical PSS Periods
- August – November: main season for shipments from Asia to Europe and North America (preparation for Christmas, Black Friday, Cyber Monday)
- January – February: before Chinese New Year – factories in Asia close for weeks, companies worldwide try to meet final shipments
- Ad-hoc: during extraordinary events (pandemic, strikes, demand fluctuations for agricultural products, new product launches)
Current PSS Examples in Europe (2023–2024)
According to announcements from leading shipowners:
- CMA CGM – PSS on Asia → Northern Europe route (effective from 29.12.2025):
- 250 USD per TEU (20-foot container)
- Applies to all cargo types: dry, refrigerated (reefer), non-standard, even paid empty containers
- Applies to all contracts with validity exceeding 30 days
- Maersk and others – similar rates during peak season, sometimes up to 350–500 USD/TEU depending on current market situation
- Trends: in recent years significant fluctuations due to pandemic, geopolitics (e.g. Suez Canal blockade), inflation and global economic volatility
Which Types of Transport and Containers Does PSS Apply To?
PSS can be charged according to various criteria:
| Type of Transport | How PSS is Charged | Note |
|---|---|---|
| FCL (Full Container Load) | Flat rate per container (e.g. 250 USD/TEU) | Most common case for standard container transport |
| LCL (Less than Container Load) | By weight (USD/t) or volume (USD/m³) | For consolidated shipments – the higher of both values applies (W/M) |
| Reefer containers | Higher PSS (e.g. 350–500 USD/TEU) | Reason: limited capacity, higher operating and cooling costs |
| Non-standard cargo (OOG, flat rack etc.) | Individual rates, often higher | Always necessary to verify with specific carrier |
| Empty containers | PSS can be charged for so-called “paying empties” | Specific to certain markets during imbalance periods |
PSS applies to all major shipping routes (Asia – Europe, Asia – USA, intra-European and overseas lines), sometimes even to inland transport (rail, truck, river transport).
PSS vs. GRI (General Rate Increase): Clear Comparison
| Parameter | PSS (Peak Season Surcharge) | GRI (General Rate Increase) |
|---|---|---|
| Purpose | Temporary surcharge during peak season | Permanent/semi-permanent adjustment of base rate |
| Validity Period | Typically several weeks – months | Can be valid for months or years |
| Cause | Seasonal fluctuations, peaks, holidays | Long-term cost changes, inflation, fuel |
| Predictability | Usually announced in advance (15–30 days) | Often less predictable, effective from beginning of month |
| Occurrence | During main seasons (e.g. summer/autumn, before CNY) | Anytime depending on market situation |
Both fees can be added together. A single invoice can have both GRI and PSS simultaneously!
PSS Calculation in Practice
FCL (Full Container)
- Most often flat rate per container (e.g. 250 USD/TEU, 500 USD/FEU)
- Example: You send 4x 40-foot containers with electronics from Shanghai to Hamburg, PSS is 500 USD/FEU → you pay 2,000 USD extra
LCL (Consolidated Shipment)
- By volume or weight (typically 40–60 USD/CBM or 60–100 USD/ton)
- Example: A pallet with volume 2.5 m³, weight 800 kg, PSS 50 USD/CBM → 2.5 × 50 = 125 USD (because weight is lower than volume equivalent)
Special Cases
- Reefer containers: PSS rates up to 30–50% higher than dry containers
- Non-standard cargo (OOG, flat rack): individual calculation, can be significantly higher
Impact of PSS on Supply Chain and Corporate Logistics
Direct Impacts
- Increased shipping costs – surcharge goes directly into pricing and margins
- More complex budgeting – PSS is usually announced with short notice, companies must be flexible
- Delays and congestion – despite paying PSS, faster deliveries are not guaranteed (congested ports, container “rolling”)
- Pressure on cash flow – sudden expenses can complicate financing especially for smaller companies
Indirect Impacts
- Port and inland transport congestion – trucks, rail, warehouses are at capacity limits during peak season
- Long waiting times for unloading/loading – sometimes several additional days, which can affect supply
- Changes in production and order planning – companies must shift orders outside peak season to reduce costs
Strategy: How to Minimize PSS Impact
Practical Recommendations
- Plan ahead – order and ship goods outside peak season if possible (e.g. send Christmas shipments already in summer)
- Consolidate shipments – combine multiple smaller shipments into one larger one, optimize container utilization
- Work with a freight forwarder – your forwarder has insight into current trends and can recommend a suitable route, port or carrier
- Use long-term contracts – larger customers can negotiate a cap on PSS, or its exclusion
- Be flexible – consider alternative routes, ports or transport types (e.g. combination rail/sea)
- Factor PSS into contracts and calculations – always verify whether PSS is included in the quote, or will be charged separately
Frequently Asked Questions (FAQ)
Is PSS mandatory for everyone?
Yes, during peak season it applies to all shipments on a given route, regardless of customer size or cargo type.
Can PSS affect inland transport?
Yes, during major congestion, a similar surcharge can appear on rail or truck transport.
Who sets the PSS amount?
Each carrier (shipowner) individually, often based on current market situation and expected demand.
Does PSS affect transport time?
Indirectly yes – it is a signal that the system is under pressure, and therefore there is higher risk of delays.
Can PSS be predicted?
Yes, major seasons are usually known in advance, but carriers announce specific amounts and validity periods 2–4 weeks in advance.
Case Study: PSS in Practice
Company XY from the Czech Republic ordered three 40-foot containers with electronics from China to Hamburg in September 2024. Standard shipping costs were 2,500 USD/FEU. Due to peak season, a PSS of 400 USD/FEU was introduced. The total surcharge was therefore 1,200 USD (3 × 400 USD). The company had to adjust its budget, but thanks to timely communication with the freight forwarder, it managed to process the shipment without major delays.
Why is Understanding PSS Key?
Peak Season Surcharge (PSS) is not just a surcharge, but also an indicator of market and logistics conditions. Those who understand its principles can plan better, minimize costs and increase the resilience of their supply chain. It always applies: information, flexibility and quality partners are the key to success in global container shipping.
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