What Is a Payment Service Provider (PSP)?

A payment service provider is a company that lets your business accept and manage payments without building the underlying infrastructure yourself. Instead of arranging separate relationships with banks, card networks and local payment methods, you connect to a single PSP that handles those connections for you. The PSP provides the checkout tools, processes each transaction, and gives you a dashboard to see what is happening with your money. For most businesses, this is far simpler and faster than assembling the pieces individually. ONE Payments plays this role for Singapore businesses, letting you accept cards, wallets and PayNow, and manage everything in one place rather than across multiple disconnected tools and logins. The result is less admin and a clearer view of your money.

A good PSP covers the full journey of a payment, not just the moment of checkout. It lets you accept payments across channels — online and in person — using methods like cards, digital wallets and PayNow. It records each transaction, helps reconcile what you have earned, and supports moving money out again through payouts to your business or partners. With ONE Payments you also get multi-currency accounts, which help when you sell or pay across borders. Bringing these capabilities together means you spend less time stitching systems together and more time running your business. The aim is one provider for accepting, tracking and sending payments, rather than several tools that each solve only part of the picture.

People often use payment service provider and payment gateway interchangeably, but they are not quite the same. A payment gateway focuses on accepting online payments — securely connecting your checkout to card networks and confirming each transaction. A PSP is broader: it usually includes a gateway, but also covers accepting payments across more channels, settling funds, and sending payouts. In other words, a gateway is one important piece, while a PSP is the wider service around it. If your main need is online card acceptance, learn more about our payment gateway. If you want online, in-store and payouts together in one place, a PSP like ONE Payments will usually fit your business better as it grows.

Businesses in Singapore choose ONE Payments because it brings the essentials into one place. You can accept payments online and in store, send payouts, and hold funds across multiple currencies, all from a single account with one dashboard. Pricing is transparent — domestic card payments cost 2.7% plus USD 0.50, with no setup fee and no monthly fee — so costs stay predictable as you grow. Instead of managing several providers for different parts of your payment flow, you get an all-in-one platform that is simpler to run and easier to reconcile. See our pricing for the full picture, or talk to sales to discuss your needs and the right setup for your business.