Parcel accessorial guides

How to Read the Accessorial Lines on a UPS or FedEx Invoice

A field guide to the surcharge lines on a parcel invoice: what each name means, what triggered it, whether fuel was added on top, and what to check before you dispute it.

Updated Nov. 9, 2026

Dimensional Weight in 2026: Divisors, Rounding and Minimums

How UPS and FedEx compute dimensional weight in 2026: the 139 divisor, rounding each side, and when Additional Handling and Large Package minimums override it.

Updated Nov. 9, 2026

Additional Handling Decision Tree: Check Any Carton in Six Questions

A six-question decision tree for UPS and FedEx Additional Handling, Large Package / Oversize and over-limit charges, in the order the carriers’ rules apply.

Updated Nov. 9, 2026

Fuel Surcharge vs. Diesel Price: Why the Percentage Moves

The diesel index is not the parcel fuel surcharge. How carrier table changes raise the surcharge at the same fuel price, and how to read moves in percentage points.

Updated Nov. 9, 2026

Audit Your DAS Exposure Before the 2027 ZIP List Changes

Measure how many packages pay DAS today and how the Dec. 21, 2026 UPS and Jan. 4, 2027 FedEx ZIP list changes could move them, step by step.

Updated Nov. 9, 2026

Accessorial Contract Checklist: 14 Questions for a Parcel Agreement

A neutral checklist of accessorial terms in a UPS or FedEx agreement: tier and zone coverage, minimums, demand, fuel, effective dates and list changes.

Updated Nov. 9, 2026

Research reports

Data-driven analysis and the Cost Index.

Glossary

Definitions of billing terms.

Fee library

Every accessorial explained.