PSS (Peak Season Surcharge)

What is PSS?

PSS (Peak Season Surcharge) is a variable surcharge that carriers may apply during times of peak demand. PSS may be applied at any time of year, but tends to be more common before the fall/winter holidays and before Chinese New Year.

Carriers announce PSS as an additional fee on top of the base rate, though it may be canceled or mitigated at a lower rate. PSS functions similarly to GRI.

How does PSS affect your shipping costs?

Carriers typically announce PSS in advance for specific trade lanes and effective dates. Depending on the carrier and mode, they charge it per container or by weight. It's added to the base rate and other surcharges, so your all-in cost can rise even when the base rate holds steady.

How can you plan for PSS?

Ask your forwarder whether a quote includes PSS or lists it separately, and check the validity dates. Booking before an announced effective date may avoid it, but only if the carrier honors the original rate. Shipping outside peak weeks can also help, though capacity is often tight around the holidays and Chinese New Year.

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