The U.S. Postal Service, United Parcel Service and FedEx, expect a year end surge in delivery, fueled by booming online shopping during the holiday season.

The Postal Service expects to deliver 4 billion packages this year, an 8% increase over 2013, according to USA Today.

But deliveries over the holiday season could total 475 million, up 12% to 14% from last year.

UPS predicts it will handle 585 million packages in December, up 11% over 2013.  UPS says it expects Dec. 22 to be its busiest day.

FedEx expects to move more than 290 million shipments between Black Friday and Christmas Eve, an 8.8% increase in year over year peak seasonal volume.  The company predicts Dec. 15 will be its busiest day.