Costco and Affirm Just Made It Easier to Buy Big

Costco just made it easier for members to make major purchases without having to pay in full upfront. The bulk retail giant announced a new partnership with Affirm, the pay-over-time fintech company, offering a flexible monthly payment option for online shoppers.

Starting this week, Costco.com customers can use Affirm at checkout for purchases over $500. The plans—ranging up to $17,500—come with clear terms and no hidden or late fees. Unlike traditional credit cards, Affirm provides real-time...