A Peak Season Surcharge, or PSS, is an extra freight charge applied during periods of high shipping demand when carrier capacity, equipment, labour, or port space is under pressure. It is common in ocean freight, air cargo, parcel shipping, and peak retail seasons before holidays. Carriers use PSS to manage congestion, recover higher operating costs, and balance limited space. For shippers, the surcharge increases landed cost and should be planned into seasonal logistics budgets. In ocean freight, PSS is typically an additional per-container fee imposed by carriers from July through October before the holiday season.
PSS (Peak Season Surcharge)
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