The Supreme Court ruled Thursday that states can compel retailers to collect sales taxes even if they don't have a physical presence in the state. The 5-4 decision overturns a 1992 Supreme Court precedent that effectively barred states from collecting such taxes, and could leave consumers paying more for online purchases as cash-strapped states tap a rich vein of new revenue. In making their decision, the justices ruled that South Dakota can collect sales taxes from online retailers like Wayfair, which was sued by the state. In doing so, the court reversed a 1992 ruling that allowed states to levy taxes only on those businesses with a brick-and-mortar location within the state. The court said that law effectively incentivized businesses to "avoid physical presence" in states and led to "a judicially created tax shelter." Ultimately, the justices deemed the current law outdated.  Read More.