June 23rd Rate Change Announcement
On June 23, 2019 there will be a USPS® price change for Priority Mail® and Priority Express Mail®. If you send larger packages you might be seeing an increase in your costs to send them. The reason for the change is that the post office is using pricing that considers not only the weight and distance (zone) a package travels but also the parcel size, called DIM or dimensional rating for volumetric rating. This means that your packaging matters because the larger box takes up more space on the postal trucks and planes, so it costs them more to ship and they are passing those costs on to you.
What is DIM rating and how is it calculated?
- For the USPS® DIM rating only applies to packages that are greater than one cubic foot (12″ x 12″ x 12″ or have a total volume greater than 1,728 cubic inches)
- DIM is calculated by measuring the box and multiplying the L x W x H. Take that sum (if greater than 1,728) and divide by 166.
- Once you have done the calculation, you compare the DIM weight to the actual weight and use the greater weight.
You have a box that is 16” x 16” x 10” that weighs 12 pounds.
DIM Weight (16 x 16 x 10)/166 = (2,560/166) = 15.42 pounds. Round up to 16 pounds.
You will now pay the DIM rate of 16 pounds, not the actual weight of 12 pounds.
Note: if the box calculation is not a total of 1,728 cubic inches (one cubic foot), then DIM does not apply with USPS®. DIM rating applies to all sizes with FedEx and UPS, which makes shipping smaller boxes easier and potentially more cost effective using the post office.
- When buying boxes for your mailing operations, look for boxes that have a volume of less than one cubic foot.
- When using boxes that are greater than one cubic foot, pack it tightly and minimize the extra space because you may have to pay extra for the empty space.
- Compare USPS® Flat Rate boxes with zone based. It may be less expensive and you get free packaging from the post office.
- Consider shipping software like MailOne™ for PostBase™ or FP Parcel Shipping. These products guide you through the shipping process and give shippers discounted Commercial rates, as much as a 40% discount off of Priority Mail®. What’s more, they create a shipping label with tracking and provide free Insurance up to $100.
For more information, visit our rate change page.