A peak season surcharge (PSS) is a temporary, additional fee that carriers — ocean lines, parcel carriers, and sometimes truckload providers — add on top of base rates when shipping demand surges and capacity tightens. It is a way for carriers to manage limited space and recover the higher cost of moving freight during the busiest weeks of the year.
If your landed cost suddenly jumps in late summer or before the holidays even though your base rate didn’t change, a PSS is usually the reason.
When do peak season surcharges apply?
In ocean freight, PSS commonly appears from roughly June through October, driven by pre-holiday inventory builds and the trans-Pacific peak. In parcel and last-mile shipping, the major carriers apply peak surcharges from around October through January, covering Black Friday, Cyber Monday, and the holiday rush. Exact windows and amounts are announced by each carrier and can change year to year.
Why carriers charge a PSS
During peak periods, vessel space, containers, chassis, drivers, and sortation capacity all become scarce. A PSS lets carriers ration capacity, prioritize committed volume, and offset overtime, extra equipment, and added handling. Ocean carriers may also use General Rate Increases (GRIs) alongside a PSS during the same period.
Types of peak-related surcharges
Beyond a flat PSS, you may see a Peak Season Surcharge per container or per package, additional handling and oversize surcharges that rise during peak, and residential delivery surcharges for last-mile volume. Reading each carrier’s surcharge schedule is essential to forecasting true peak costs.
How to reduce peak season surcharge impact
Plan inventory early so you import ahead of the ocean peak. Lock in committed capacity and contracts before windows open. Diversify carriers and modes, shift bulky orders to LTL or consolidated freight, and use an asset-based partner that controls its own trucks and chassis so you are less exposed to spot-market spikes. Accurate forecasting and pre-booking are the most reliable ways to blunt PSS.
Frequently asked questions
Is a peak season surcharge negotiable?
Carrier-published PSS amounts are often fixed, but committed-volume shippers and those using asset-based 3PLs can sometimes secure caps, waivers, or better capacity terms during peak.
How long does a PSS last?
It is temporary and tied to the carrier’s announced peak window — typically several weeks to a few months — then it is removed or reset.
Does PSS apply to drayage?
Port drayage itself is usually billed separately, but tight peak capacity can raise drayage and chassis costs. Owning trucks and a chassis pool helps insulate against those swings.
Beat peak with asset-based capacity
Go Freight runs 100+ owned trucks and its own chassis pool out of Miami, so your freight keeps moving when capacity gets tight. Get a quote or call (786) 445-0150.