Supreme Court Ruling Means Some Online Purchases Will Cost More

Some online sales are about to start costing more.

The U.S. Supreme Court ruled Thursday that states can require retailers to collect and remit sales taxes on out-of-state purchases. The 5-to-4 decision reversed decades-old decisions that protected out-of-state vendors from sales tax obligations unless the vendor had a physical presence in the state.

Those earlier decisions, one half a century ago, the other a quarter-century ago, date back to a time when mail-order sales were relatively small and online sales were all but nonexistent. As the justices acknowledged Thursday, however, the court back then “could not have envisioned” a world in which e-commerce sales have revolutionized the dynamics of the national economy.