What changed in 2026
For years, surcharges were triggered by linear measurements — longest side, second-longest side, length plus girth — and weight. In January 2026 both carriers added a cubic-volume test: length × width × height. A box can now be perfectly fine on every linear measure and still get hit because its total volume crosses the line. Lightweight but bulky items are the most exposed.
The 2026 cubic-volume thresholds
| Trigger | Threshold (2026) | Approx. fee |
|---|---|---|
| Additional Handling — Dimension | Volume > 10,368 cu in or longest side > 48", 2nd > 30", L+girth > 105" | ~$33–41 |
| Additional Handling — Weight | Actual weight > 50 lbs (US) | ~$46.50 |
| Oversize / Large Package | Volume > 17,280 cu in or weight > 110 lbs or length > 96", L+girth > 130" | ~$115 |
| Non-corrugated packaging | Not fully encased in cardboard | AHS applies |
Oversize also forces a minimum billable weight (around 90 lbs), so the real cost jump is bigger than the surcharge alone. Fees shown are approximate 2026 FedEx US amounts; UPS publishes comparable figures, and far zones run higher.
How to drop below a threshold
Dimensions are rounded up to the next whole inch before the math, so a box measured at 24.1 inches counts as 25. Trimming real inches off a box can move you under a cubic threshold entirely. Splitting one oversize box into two additional-handling boxes can also lower the size fee — but it adds a second base rate, so run both scenarios before deciding. And audit your invoices: misapplied surcharges are refundable within about 15 days.
Why no total shipping price?
Your total rate depends on your negotiated contract discount, origin/destination zones, and fuel — which differ for every shipper, so any "total" would be a guess. Surcharge triggers, though, are based on standard rules that apply to everyone regardless of discount. This tool tells you exactly which surcharges your box trips and the approximate standard amount, which is the part you can actually act on by changing the box.