The USPS instituted surcharge fees for long and awkward packages in 2022, and this year, it is proposing changes to the fee structure. Most significantly, it wants to make surcharges zone-based, so non-standard packages shipped across the country would cost more than those shipping locally or regionally.
The OMG Official Mail Guide reported the changes and uploaded the May 17th USPS proposal that describes changes under consideration. The document notes that the contents are “pre-decisional, and subject to change based on Board of Governors and Postal Regulatory Commission decisions.”
The document shows that currently both a length and a cubic volume fee may be assessed; under the proposed changes to nonstandard fees, only the greater of the fee per package would apply.