Tax-News.com: Amazon Collects Sales Tax In Four More US States

With Amazon agreeing to begin the collection of sales taxes on January 1 in four
more US states – Iowa, Louisiana, Nebraska, and Utah – the online
retailer is informing its customers that taxes are now charged on items shipped
to 32 states.
Source: IRS Tax News – Tax-News.com: Amazon Collects Sales Tax In Four More US States