Now, states have essentially been given the green light to pass laws requiring out-of-state sellers to collect the state's sales tax from customers and send it to the state. More than a dozen states have already adopted such laws even ahead of the court's decision, confident in the decision's direction, said state tax policy expert Joseph Crosby.
This move, however helpful it is for states to regain (up to now) lost revenue, will likely be a slow death strangle for small online businesses. These smaller businesses with an online only presence usually skirted tax fees on their products, bringing lower prices to consumers - allowing for actual competition with bigger chains that are better able to leverage economics of scale. Now, these find themselves in a position of having to charge sales tax on every product they sell, irrespective of inside their home state or not. Now, everyone is playing on an even tax field, since big corporations (like Amazon, which has a physical presence in every state and thus already collected tax) and small businesses alike compete on the same field. But this does mean that the smaller upstarts will have more troubling times ahead, and online services like Kickstarter might find themselves taken aback immensely. Not to say anything about shoppers, who now will have no way to resort to lower prices due to no tax being applied to their products.
Source : TechPowerUp