Not too long ago, I wrote about "the problem with online sales tax" here on this blog. There's a long-reaching history with states wanting to get reveunes from sales to their residents when the merchant isn't in that state. It started long before the internet (think mail order catalogues), but e-commerce has certainly aggravated the situation. It always comes down to nexus- whether a merchant has a physical presense in a jurisdiction. And so, over the past few years, the states have been trying various ways to redefine nexus, and the term "physical presense" as well. In its latest effort, California has taken an approach similar to one recently taken by New York: Redefining "physical presense" to include merchants who have affiliates there. Amazon is not happy, and calls the law unconstitutional, because they say they don't have a physical presense there (the company is headquartered in Seattle, Washington, and maintains its servers elsewhere, as well.) But quite obviously people in California are buying stuff from Amazon. If these were the only factors, it would be pretty clear that the consumers would be responsible for self-reporting use tax (good luck there). But the issue comes down to affiliates of Amazon... not major suppliers or big name companies you may have heard of, but often blogs and personal and business websites that include links to Amazon account. If it were an eBay situation and the affiliate/person selling their own product is located in California, there's a case to be made that sales taxes should be collected. But Amazon sells its own products- and its affilliate program is simply made up of mostly small websites/blogs/etc that include links to the products for sale on Amazon, and for which they receive what amounts to a commission if a sale results from that click-through. So, should Amazon be responsible for collecting and reporting sales taxes in California because somebody in California has a link to Amazon on their blog and they get some form of revenue for clicks or purchases that went through their website? Amazon certainly doesn't think so, and is threatening to "terminate its affiliate program" in the state. The overall issue is both more, and less, complicated than this example, but it exemplifies the problem that both states and retailers, big and small, will continue to face until there is a clarified national solution to the taxability of online sales. And a single, ecommerce-focused definition of nexus. Will this happen anytime soon? Although states are increasingly promoting their autonomy under states rights arguments, I think the most efficient way to resolve this would be for a national program. While the Streamlined Sales Tax does offer this in a way, it is voluntary and can't be enforced across state lines very easily. I think it will eventually take the consent of the states and their federal representatives to agree to a national solution. Not all states would see full revenue recognition, but I think all of them would end up bringing in more than they currently do. Of course, this solution wouldn't make Amazon or the other large online retailers happy, either. Oh- and a reminder: Our annual review of sales and use tax compliance systems will be in the upcoming August issue of CPA Practice Advisor.