Payment Processing Fees in Singapore: What You Actually Pay

A single "processing fee" usually bundles several different costs together, which is why comparing providers can feel confusing. For a card payment, the fee typically includes interchange (set by the card networks and passed through to every provider), a scheme fee (charged by Visa, Mastercard and others), and the provider's own margin for running the platform, handling authorisation and settling funds to you.

On top of that, two more costs often apply depending on the transaction. If a customer pays in a different currency, an FX conversion fee is added when the money is converted. And when you move funds out — to a supplier, a partner or your own account in another currency — a transfer fee may apply. The headline percentage you see advertised rarely tells the whole story, so it pays to understand each layer before you compare quotes. A genuinely cost-effective provider makes all of these components easy to see up front rather than hiding them in the fine print.

Most Singapore businesses earn the bulk of their revenue through card payments, so this is where fees matter most. With one.ooo, domestic card payments cost 2.7% plus USD 0.50 per transaction. International cards — where the customer's card was issued outside Singapore — add 0.7% on top, so a cross-border sale is charged at 3.4% plus USD 0.50. There is no setup fee and no monthly fee, which means you only pay when you actually get paid.

That structure is deliberately simple: one rate for domestic cards, a clear add-on for international, and nothing to pay while you are quiet. It covers the major card brands your customers expect — Visa, Mastercard, American Express, JCB and UnionPay — plus Apple Pay and Google Pay for fast mobile checkout. For local shoppers, PayNow lets people pay straight from their banking app. Because every method runs through the same platform, you get one clear view of what each sale costs instead of reconciling several providers. You can see the full breakdown on the one.ooo pricing page.

Cards are only part of the picture, especially for businesses that buy, sell or hold money across borders. When a payment involves converting between currencies, one.ooo applies an FX conversion fee of 1.00% above the interbank rate. Because it is quoted against the interbank reference rate rather than a marked-up internal rate, it is straightforward to check what you are paying.

Moving money out has its own clear pricing. A local outgoing transfer costs USD 2.00. International SWIFT payments are also supported — an outgoing SWIFT transfer is a flat USD 28.00 — though for most Singapore businesses the day-to-day focus is on local rails where they are available. You can also hold and manage funds across 13 currencies in a multi-currency business account, which helps if you regularly receive in one currency and pay out in another. Keeping acceptance, FX and payouts on one platform means fewer surprise line items and a single place to see the true cost of each transaction.

One of the biggest hidden costs is not any single fee — it is fragmentation. Many growing businesses end up with a card gateway from one provider, a separate account for foreign currency, a different tool for payouts and yet another system for in-store sales. Each piece has its own fee schedule, its own login and its own report, and the gaps between them are where money quietly leaks.

Fragmented setups make it hard to answer a simple question: what did it actually cost us to get paid this month? Reconciling several statements takes time, errors creep in, and you rarely get a clean view of your blended rate. Bringing online, in-store, FX and payouts onto one all-in-one platform removes that overhead. You see every channel in a single dashboard, your reporting lines up, and the cost of each transaction is visible rather than scattered. For most SMEs, simplifying the stack is where the real savings show up — well before you renegotiate any individual rate.

Predictable pricing matters as much as a low rate, because a fee you cannot forecast is hard to plan around. A few habits help. First, favour providers with no setup or monthly fees, so your costs scale with revenue instead of running whether you sell or not. Second, look for per-transaction pricing you can model — a clear percentage plus a fixed amount is easy to project against your average order value.

Third, check how international cards, FX and transfers are charged before you commit, since these are where unexpected costs usually appear. Fourth, if you process meaningful volume, ask about custom rates — with one.ooo, higher-volume businesses can qualify for volume discounts, so it is worth a conversation as you scale. Finally, keep your channels together where you can: a single platform for online, in-store and cross-border payments gives you one predictable fee structure instead of several moving targets. If you want help modelling your costs, you can talk to the one.ooo team about a plan that matches your monthly volume.

Regulated payment services are provided by Airwallex (Singapore) Pte. Ltd., a MAS-licensed Major Payment Institution under the Payment Services Act 2019. ONE Payments acts as a technology provider and merchant service facilitator.

ONE Payments Pte. Ltd. (UEN 202324291R) is registered in Singapore and operates as a technology and merchant services platform. The integration, dashboard, reporting and pricing capabilities described on this page are provided by ONE Payments. Payment processing, fund holding and settlement of regulated payment activities are carried out by the licensed regulated partner named above. Information on this page is provided for general guidance only and does not constitute financial, legal or regulatory advice. Fees quoted are current at the time of writing — please confirm the latest pricing and the services available for your specific business when onboarding. For details about your setup, contact the ONE Payments team.