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Updated September 2026
A peak season surcharge (PSS) is a temporary fee that carriers add on top of base rates and fuel surcharges during high-demand shipping windows, usually from late September to mid-January in the United States. It is charged per package, per container or per kilo depending on the mode, and it is removed when the window ends.
This guide covers what the surcharge is, how it differs from other rate increases, the 2026 UPS, FedEx and USPS schedules, how ocean and air surcharges work, what happens in truckload (where there is no surcharge line but there is a seasonal spot premium), and a five-step method for budgeting all of it.
A peak season surcharge is an extra charge carriers apply during the weeks when demand runs ahead of capacity. In the US that window runs from the last week of September through the middle of January, driven by holiday retail volume. The surcharge is temporary by definition: it has a start date and an end date, and it disappears when the window closes.
Carriers charge it because peak volume costs them more to move. Parcel networks add seasonal labor, trailers and sort capacity. Ocean carriers see container demand spike on specific trade lanes. Truckload carriers see more freight than trucks in specific regions. The surcharge is how that cost is passed to shippers without permanently changing base rates.
The name varies by mode. UPS and FedEx call theirs a demand surcharge and list it on the invoice as a separate line. Ocean carriers call it a peak season surcharge and announce it per trade lane. Air carriers quote it per kilo. Whatever the label, it sits on top of the base rate and on top of the fuel surcharge.
A PSS is one of three charges that can move a freight bill in the same quarter, and shippers who confuse them budget badly. The differences:
All of these stack. A parcel moving in December carries base rate plus fuel surcharge plus demand surcharge plus any accessorial fees. A budget that only tracks the base rate misses most of what changes in the fourth quarter.
Both major parcel carriers start their 2026 demand surcharges in the last week of September, apply their highest fees from late November to late December, and end the program in mid-January 2027. The per-package figures below are the published rates for a standard account. Shippers above the carriers' weekly volume thresholds pay higher tiers, so check your own agreement.
UPS 2026 demand surcharges
FedEx 2026 demand surcharges
FedEx residential works differently, and this is the part most budgets get wrong. The FedEx Demand Residential Delivery Charge is not a flat per-package fee. It adjusts every week, and it applies only to customers shipping more than 20,000 residential and Ground Economy packages in a calculation week. The amount is set by a peaking factor: your volume in that week divided by your weekly average for 1 to 28 June 2026, expressed as a percentage. There is a two-week lag between the week measured and the week charged, so a November volume spike shows up on a December invoice. If you ship below that threshold, this charge does not apply to you at all.
USPS 2026 peak pricing
The carrier pages with the complete tables are the FedEx demand surcharges page and the UPS shipping costs and rates page. Both carriers publish updates during the season, so re-check them in October.
Ocean carriers announce a PSS per trade lane in a customer advisory, priced per container (a 20-foot or 40-foot box), with an effective date and often no fixed end date. It stays in place until the lane cools off, and it can be raised mid-season with another notice. In 2026 Maersk published a PSS notice for North Europe to the US (August) and Hapag-Lloyd for Asia to North Europe and the Mediterranean (May), and the other major lines issued similar advisories on their busiest lanes.
Air freight surcharges are quoted per kilo and move faster than ocean, sometimes week to week during November and December.
Four things to check on every ocean or air PSS notice:
Usually not as a line item. In truckload, peak demand shows up in two other places: a higher spot rate on the lanes where demand outruns capacity, and more tender rejections on contract lanes. When the spot rate on a lane rises above the contract rate, carriers have an incentive to reject the contract tender and take the spot load, so the shipper's freight cascades to backup carriers and then to the spot market at the seasonal premium.
That premium is real in 2026. Uber Freight expects truckload spot rates to run 20 to 25 percent above prior-year levels through the rest of 2026, and C.H. Robinson has forecast 23 percent over last year, both reported by Transport Topics in June 2026. Truckstop and FTR reported that broker-posted spot rates rose for all equipment types in the week ending 4 September 2026, the first time since May.
Contract shippers avoid the worst of the premium by acting before November rather than after:
Most peak surcharges land in one quarter, so a twelve-month average hides them. Budget them as their own line, by week, using the carriers' published dates.
A worked example. Say a shipper moves 6,000 UPS Ground Residential packages a week and volumes are flat year on year. Using the 2026 UPS schedule and rounding to whole weeks: four weeks at $0.50 (25 October to 21 November) is $12,000; five weeks at $0.75 (22 November to 26 December) is $22,500; three weeks at $0.50 (27 December to 16 January) is $9,000. The Ground Residential demand surcharge alone is about $43,500 for the season, before Additional Handling, Large Package and any volume-tier increase. Run the same arithmetic for every service you use and add the truckload spot premium from step 4.
A peak season shipping surcharge is a temporary fee carriers add during high-demand periods, usually from late September to mid-January in the US. It is charged on top of the base rate and fuel surcharge and removed when the season ends. UPS and FedEx call it a demand surcharge.
UPS demand surcharges run from 27 September 2026 to 16 January 2027. Residential charges start 25 October at $0.50 per Ground Residential package, rise to $0.75 from 22 November to 26 December, and return to $0.50 until 16 January. Air residential packages carry $1.35, rising to $2.50 in the peak window. Additional Handling and Large Package fees rise to $11.90 and $117.50 in the peak window.
It is dynamic rather than a flat fee. It applies only to customers shipping more than 20,000 residential and Ground Economy packages in a calculation week, and the amount is set by a peaking factor comparing that week's volume with the customer's weekly average for June 2026. A two-week lag separates the week measured from the week charged.
In ocean freight, a PSS is a per-container fee that a carrier adds on a specific trade lane when demand exceeds vessel space. It is announced in a customer advisory with an effective date, often without an end date, and it can be raised with a further notice. Whether it applies to your contract rate depends on your contract terms.
For parcel, the 2026 UPS demand surcharges add $0.50 to $0.75 per residential ground package depending on the week, with much larger fees for oversize and additional-handling packages, and FedEx applies a dynamic residential charge above 20,000 packages a week. For truckload, Uber Freight expects spot rates to run 20 to 25 percent above 2025 levels through the rest of 2026, and C.H. Robinson forecasts 23 percent, as reported by Transport Topics in June 2026.
Not usually as a separate line. Truckload peak costs appear as higher spot rates and as tender rejections on contract lanes that are priced below the market. Shippers manage them by benchmarking lanes, rebidding the ones that have drifted, and tendering earlier with realistic pickup windows.
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