eBay is reminding sellers of new shipping rates that will soon go into effect for FedEx and UPS. This will obviously affect eBay sellers as well as sellers on sites across the Internet.

The new UPS rates go into effect today, while the FedEx changes will go into effect in a week on January 5.

UPS announced its changes back in June, saying that in the United States, dimensional weight will be utilized to calculate the billable weight of a shipment on all UPS Ground services and UPS Standard to Canada packages. This was already applied to UPS air services (domestic and international), UPS Standard to Mexico ground services, and UPS Ground packages and UPS Standard to Canada for packages measuring 3 cubic feet in size or larger. More details here.

“UPS has been researching the potential expansion of dimensional-weight pricing for a number of years because it enables us to more appropriately align rates with costs which are influenced by both the size and weight of packages,” said Alan Gershenhorn, UPS executive vice president and chief commercial officer.

For FedEx, Express rates will increase as will FedEx Ground, FedEx Home Delivery, FedEx SmartPost, and FedEx Freight rates. FedEx Retail and One Rate pricing will also change. More details on these changes here.

eBay notes that its shipping calculator, eBay labels, and PayPal labels will all be updated to reflect the changes, and that sellers should make sure the shipping costs in their listings also reflect the new rates.

“In order for eBay customers to obtain accurate estimates on shipping rates, it’s important that sellers include not only correct shipping weights but also correct package dimensions when listing items or purchasing a label,” the company says.

eBay recently announced the addition to printable labels from its mobile apps.

Image via eBay