Why an online bookstore could undercut a local one
When Amazon launched in the 1990s, many states generally required a retailer to collect sales tax only if it had a sufficient physical connection—often called nexus—to that state. A shop with a local storefront collected tax at checkout. A mail-order seller shipping from elsewhere often did not have to collect it for customers in states where it had no such connection.
That difference could make an online book purchase feel cheaper, even when the seller’s listed price was the same. The tax was not necessarily erased: customers could owe a corresponding use tax themselves. But that obligation was difficult for states to enforce when buyers had to calculate and report small purchases on their own.
Why books fit the business model
Books were practical for a mail-order operation: they were relatively easy to pack and ship, and an online catalog could offer far more titles than a typical local shop could keep on its shelves. The tax treatment reinforced those advantages. Amazon could reach customers across state lines without immediately collecting sales tax in every destination state, giving some buyers a lower checkout total than they would face at a nearby bookstore.
The advantage was conditional, not universal. Tax rules varied, and a retailer’s obligation could change as its physical operations and connections to states grew. As online commerce expanded, states pressed for broader collection requirements, and the old distinction became a source of ongoing debate.
The lasting lesson is that the early internet did not make sales tax disappear; it made collection depend on where a seller had a physical footprint. That gap helped online prices look especially compelling while leaving states, shoppers, and brick-and-mortar competitors to contend with who would account for the tax.
