Freight Surcharge Decoder — Peak Season Surcharge (PSS)

Peak Season Surcharge (PSS) can add $200–$1,000 per container during high-demand periods. It's one of the most common surcharges on Asia export routes and often surprises shippers who haven't budgeted for it. This guide explains what triggers PSS, how to anticipate it, and strategies to avoid overpaying.

What Triggers PSS?

Peak Season Surcharge (PSS) is a temporary surcharge imposed when carrier capacity cannot keep pace with demand. It's most common on Asia export routes before:

• Chinese New Year (January–February) — factories rush to ship pre-holiday orders
• Back-to-School season (July–August) — retailers stock up on fall merchandise
• Q4 Holiday Season (September–December) — Christmas, Black Friday, and e-commerce peak
• Post-disruption recovery periods — port congestion, labor strikes, or blank sailings create artificial peaks

What Doesn't Trigger PSS

• Stable, off-peak demand periods
• Routes with excess carrier capacity
• Contracts with pre-negotiated PSS exemptions

Current PSS Levels by Route (Q2 2026)

Trade Lane	PSS Range (per 40ft)	Peak vs Off-Peak
Asia → North Europe	$300 – $800	3–5x off-peak
Asia → Mediterranean	$200 – $600	2–4x off-peak
Asia → US West Coast	$150 – $500	2–3x off-peak
Asia → US East Coast	$250 – $700	2–4x off-peak
Asia → South America	$400 – $1,200	3–6x off-peak

PSS vs GRI: What's the Difference?

While GRI (General Rate Increase) is a permanent base rate hike announced 30 days in advance, PSS is a temporary demand-driven surcharge that can be implemented with as little as 5 days' notice. Both add to your total freight cost, but GRI sticks around while PSS should theoretically disappear when demand normalizes.

When PSS vs GRI Matters Most

If you're signing a long-term contract, GRI matters more — it will persist through your contract period. If you're booking spot shipments, PSS is the variable to watch and plan around.

How to Avoid Overpaying on PSS

• Book 6–8 weeks ahead — early bookings are often exempt from PSS
• Shift to slower transit — some carriers offer lower PSS on non-priority vessels
• Use a freight forwarder with carrier commitments — NVOCC blocks of space often avoid PSS
• Monitor demand indices — Drewry's World Container Index and Freightos Baltic Index signal when peaks are approaching
• Consider alternative ports — secondary ports may have lower or no PSS during peak periods

When PSS Doesn't Go Away

During the 2021–2023 shipping crisis, PSS became a de facto permanent surcharge on several routes. If you notice PSS persisting beyond the typical 4–8 week peak window, it's worth challenging with your forwarder — carriers may be reluctant to formally remove it unless shippers push back.