Square offers integrated card readers, terminals, a point of sale app and online payment processing for US businesses. Processing is priced at a flat rate per transaction, with no monthly fee on the free plan and no lock-in contract. The free POS app, free magstripe reader and same-day onboarding remove most of the friction of getting set up, and paid plans add advanced features per location.
Square Online, its e-commerce builder, has a permanently free plan and shares a single inventory and order system with the in-person POS, so online and in-store stock, orders and product listings stay in sync. It charges no separate platform transaction fee, only Square's standard processing rate per sale, and its paid plans add features such as removing Square branding and abandoned-cart recovery. It includes native AI site-building tools.
The flat processing rate costs more than a negotiated interchange-plus deal at high volume. As a standalone site builder, Square Online is less complete than dedicated e-commerce platforms, with a smaller app ecosystem, limited multi-currency support and native processing tied to Square.
Square was founded in 2009 and is headquartered in San Francisco, USA.