UPS Daily Rates vs Retail Rates — 139 vs 166 Divisor

Daily vs Retail, in one sentence

Daily Rates are the negotiated contract rates for shippers with an active UPS agreement; Retail Rates are the counter rates paid without one. Whether a specific shipper qualifies for Daily Rates is a contract question — no calculator can answer it — but the divisor difference changes the math for every package above a few pounds of DIM weight, whichever rate table applies to you.

Why the divisor matters

The divisor is the cubic inches UPS treats as one pound of space. A smaller divisor (139) converts more volume into billed weight than a larger one (166). Everything else — dimensions rounded up to the next whole inch, DIM weight rounded up to the next whole pound — is identical between the two tables.

Take a 24 × 18 × 12 in box, volume 5,184 in³:

• Daily Rates: 5,184 ÷ 139 = 37.3 → 38 lb of DIM weight
• Retail Rates: 5,184 ÷ 166 = 31.2 → 32 lb of DIM weight

The same box, 6 lb apart. The divisor difference does not mean Retail is cheaper overall — Retail carries higher base rates — but it does mean DIM weight is roughly 19% higher on the Daily table for the same volume.

Surcharges and limits are the same on both tables

Both rate types share the same Additional Handling triggers (longest side over 48 in, second-longest over 30 in, actual weight over 50 lb, domestic cubic size over 10,368 in³) and the same maximums (150 lb, 108 in longest side, 165 in length + girth). Packages over the maximums are not accepted; if one is found in the UPS system it incurs an Over Maximum Limits charge.

One more divisor trap: rounding

UPS rounds each dimension up to the next whole inch — the official page previously said "nearest," and UPS does not publish when the change took effect. Combined with the divisor gap, a box measured at 24.1 × 18.1 × 12.1 in is billed as 25 × 19 × 13 in = 6,175 in³. At Daily rates that is 6,175 ÷ 139 = 44.4 → 45 lb; at Retail rates 6,175 ÷ 166 = 37.2 → 38 lb. Without the rounding step the same measurements would be 5,278 in³: 38 lb at Daily, 32 lb at Retail — so rounding alone adds 6–7 lb on either table, on top of the divisor gap.

Which number appears on your invoice

The rate table your shipment priced under is shown on the invoice; if you ship under a UPS agreement and your packages price at 139, you are on the Daily table. Checking both columns on a DimCheck calculator is still useful: if a package is near a surcharge threshold, the two tables can land it on different sides of the line.

Next steps

• Calculate UPS DIM weight for both Daily (139) and Retail (166)
• See the UPS rules table with official sources
• Read about dimension rounding across carriers
• Browse all shipping guides