Peak Season Surcharge (PSS) Definition

Peak Season Surcharge (PSS) is an additional charge carrier companies impose during peak seasons. Peak season is a period of high demand, typically during holidays or busy seasons.

The PSS is a variable surcharge added to the base freight rate to cover the carrier’s increased costs during the peak season. Shippers must pay the PSS in addition to the regular shipping rate. The peak season surcharge definition may vary among carrier companies and may be called peak surcharge or other similar terms.