
Previously, DIM weight was only applied to parcels being shipped to Zones 5-9. Reducing your package size and making sure you have efficient packaging can prevent overpaying on shipping.ĭIM weight will also be applied to all zones for Priority Mail parcels over 1 cubic foot.

The dimensional weight (DIM weight) divisor will change from 194 to 166.Ĭhanging the divisor to a smaller number means a higher weight per cubic foot will be applied - effectively increasing costs if your shipment is under the dimensional weight. The Medium Flat Rate Box and Large Flat Rate Box will see a 5.1% and 5.5% increase, respectively. From January 27, 2019, the rate for a 1 lb Priority Mail package went from $6.70 to $7.35, while the Priority Mail Small Flat Rate box went from $7.20 to $7.90 – a 9.7% increase for both services. Priority Mail is the USPS’ core solution for shipping packages domestically, so this change will affect everyone. Priority Mail saw rates increasing between 3-10%, with smaller packages being affected the most.

As each new year comes to a close, mail providers increase their rates.
