ShippingCowWhat it costs to ship an oversize parcel
Shipping costs step up at set weight and size lines, because carriers add surcharges for boxes they must handle by hand. At UPS and FedEx the first line is 50 lb, USPS parcel service stops at 70 lb, and a large or oversize package bills at a minimum of 90 lb. ShippingCow is a commerce technology company that builds and runs seller-owned stores. Fulfillment for heavy parcels in the 50 to 149 lb band is provided by partner warehouses, so those boxes sit on or past those lines.
The four things you are paying for
Billable weight: the greater of actual and dimensional weight, with a 90 lb minimum once a package counts as oversize.
Zone: the distance from origin to destination, 2 through 8 across the contiguous US.
Surcharges: Additional Handling or Oversize, residential, delivery area, peak demand, and fuel.
Your contract: the discount off published rates, which varies by service and lane.
Most cost-reduction advice goes after point four. On products 50 to 149 lb, point two is usually bigger and easier to change.
Where oversize starts at each carrier
| Carrier | Oversize or large package when | Minimum billable | Hard limit per package |
|---|---|---|---|
| UPS | Over 96 in long, over 130 in length plus girth, over 17,280 cubic in, or over 110 lb actual weight (the last two since January 26, 2026) | 90 lb | 150 lb, 108 in long, 165 in length plus girth |
| FedEx | Over 96 in long or over 130 in length plus girth | 90 lb | 150 lb, 108 in long, 165 in length plus girth; beyond that it is freight |
| USPS | No oversize tier at these sizes | Not applicable | 70 lb and 130 in length plus girth |
The UPS 110 lb line
Since January 26, 2026, any UPS package over 110 lb actual weight is a Large Package, whatever its size. For a product packed at 111 to 149 lb, that means a large-package surcharge on every UPS shipment. A dense carton at 110 lb or less that stays under the size lines avoids it.
Sources
| Source | What we took from it |
|---|---|
| FedEx 2026 surcharge and fee changes | FedEx 2026 Oversize prices by zone |
| FedEx: What is an Oversize Charge? | FedEx oversize thresholds and 90 lb minimum |
| UPS 2026 Tariff and Terms of Service | UPS Large Package rules, including the 2026 cubic and 110 lb triggers |
| USPS parcel size, weight and fee standards | USPS 70 lb and 130 in limits |
Carrier list prices and rules as published for 2026, checked on Sep 25, 2026. Negotiated contracts change the prices, not the thresholds.
Questions
How does a 3PL help with these surcharges? +
A 3PL that ships heavy parcels every day understands the lines and routes each box accordingly. ShippingCow is a commerce technology company that builds and runs seller-owned stores. Fulfillment for heavy parcels in the 50 to 149 lb band is provided by partner warehouses, so these surcharges are part of that work.
Does ShippingCow ship packages over 70 and 90 lb? +
ShippingCow is a commerce technology company that builds and runs seller-owned stores. Fulfillment for heavy parcels in the 50 to 149 lb band is provided by partner warehouses, so boxes over 70 lb and 90 lb sit inside that range.
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