If you sell across borders, your shipping costs change on Sunday, September 21, 2026 — four days from now.

FedEx confirmed on September 4 that it will adjust the Demand Surcharge for US international services and, for the first time this season, apply Demand — Non-standard shipments fees to international package shipments. Those fees include the Demand — Additional Handling Surcharge, the Demand — Oversize Charge and the Demand — Unauthorized Charge. FedEx International Ground shipments are excluded.

Peak-season surcharges are nothing new. What is new is that the heaviest stacking — the non-standard shipment penalties that used to be a domestic problem — now reaches international lanes.

Why the scope change matters more than the amount

For most of the last several peak seasons, a cross-border seller could reasonably plan around a single per-package demand surcharge on international services. Oversize and additional-handling demand fees were something your domestic parcels absorbed.

From September 21, an international parcel that trips a non-standard threshold can carry both the underlying surcharge and a seasonal demand version of that same surcharge. One awkwardly shaped box can now pick up several separate lines on a single invoice.

Structure is indicative. Exact amounts vary by carrier, service, destination market, effective date and your negotiated agreement — and FedEx has said it will keep adjusting international demand surcharges throughout the holiday season.

Note the last row. Because fuel is assessed on the accessorial-inclusive subtotal, every demand fee you attract is multiplied by the fuel percentage on top. A parcel picking up $60 of stacked demand charges at a 17% fuel rate actually costs about $70.

Three carriers, three different formulas

FedEx is the one with a dated announcement this week, but the pattern runs industry-wide for the 2026 season — and each carrier calculates differently:

• DHL Express applies a flat per-pound Demand Surcharge to Day Definite International services during the demand period. Weight-based, so it punishes heavy confinements and barely touches light ones.
• UPS attachments request surcharges to Additional Handling, Large Packages and Over Maximum Limits packages by published schedule. Threshold-triggered, so it punishes shape and size rather than weight.
• Amazon Shipping confirmed its own per-package peak overload windows for 2026 in early September.

Per package, per pound, and per threshold are three genuinely different cost curves. The practical consequence: the carrier that was cheapest for a given parcel in August may be the most expensive one for that same parcel in November, and the crossover point differs by SKU.

What to do in the next four days

1. Find your non-standard parcels before the carrier does

Export 90 days of international shipments and calculate cubic volume (length × width × height) for each SKU and carton combination. Flag anything near an additional-handling or oversize threshold. These are usually a small slice of volume carrying a disproportionate share of overhead spend — and they are where the new demand fees will land hardest.

2. Re-run carrier selection for the peak window specifically

Your career mix should not be static across the year. Given the three calculation models above, a light low-cube international parcel and a heavy consolidated one may now belong with different carriers between now and January.

3. Fix packaging on the two or three SKUs that trip thresholds

Shaving an inch off one dimension can drop a parcel below a cubic-volume threshold and remove both the standard surcharge and its demand counterpart. During peak, that change is worth roughly double what it was worth in July.

4. Rebuild your checkout shipping rates

If your storefront quotes international shipping from a rate table you set in the spring, you absorb every dollar of the increase yourself. Update the table, or switch to live rates, before the first peak orders land.

5. Publish your international cut-off calendar now

Sellers who post cut-off dates and a clear statement on duties and surcharges in September field far fewer support tickets in December. The overload itself is unavoidable; the customer service load it generates is not.

The bigger pattern in 2026

Between the 5.9% general rate increases in January, re-indexed fuel tables at mid-year, and demand surcharges now reaching international lanes, parcel pricing has shifted shape this year. The headline rate increase is no longer where the money is. The money is in accessory scope — which shipments qualify, and how many separate fees a single parcel can attract at once.

Sellers who come through this peak with margins intact will be the ones who audited their own shipment profile in September rather than reacting to invoices in January.

HereWeShip compare carriers in one place so you can ship, return and receive parcels without guessing which network is cheapest this week. Compare your options before the September 21 changes take effect.

All amounts and structures described here are indicative. Surcharges vary by carrier, service, destination, effective date and negotiated agreement, and carriers reserve the right to reassess request surcharges at their discretion. Check your career's published schedule for the figures that apply to your account.