Consumers are spending more online during the holiday season. Therefore, it is important to understand how purchase behaviors are changing. Shoppers are leveraging the internet to better plan for holiday purchases and are using mobile phones to take advantage of last-minute deals at their convenience. This forecast details online retail spending during the holiday season (i.e., November and December) and is a derivation of the annual US online retail forecast. This includes online holiday historical sales from 2008 to the 2016 forecast. It also includes key drivers and trends behind the forecast numbers.