Sri Lanka's Trusted Payment Gateway

OnePay Unified Checkout.
Built to Be Sri Lanka's
Most Trusted Payment Page.

OnePay Checkout is a single, customisable payment page that accepts cards and local mobile wallets, carries your brand, and gives every customer a reason to trust the "Pay" button they are about to tap.

Customisable, branded checkout Cards + mobile wallets, one page 3D Secure on every transaction

The Checkout Page Is Where Trust Is Won or Lost

A customer has already decided to buy. They have picked the product, agreed to the price, and clicked through to pay. This is the moment a sale either closes or quietly disappears.

Most of the time, what makes a customer hesitate at that final step is not the price. It is the page itself. A checkout that looks unfamiliar, carries no branding, or feels like it was bolted on from somewhere else makes people pause. And a pause at checkout is often the same thing as a lost sale.

This is exactly the problem OnePay Checkout was built to solve. One unified payment page, fully customisable to your brand, built to feel like a natural part of your business rather than a foreign detour.

One Checkout Page. Every Way Your Customer Wants to Pay.

OnePay Checkout is a hosted payment page that brings every payment method your customer might use into a single, clean screen. It shows your brand name, the exact amount due, and a clear reference number, so there is never any confusion about what is being paid for.

Every Card. Every Local Wallet. One Page.

Your customers should never have to think about which payment method will work. OnePay Checkout brings the full range of accepted methods into view, all at once, on the same screen.

Debit and Credit Cards

Local Mobile Wallets

Supported Currencies

OnePay supports 10 currencies, so customers paying from outside Sri Lanka can complete their purchase in a currency they recognise. Settlement to your bank account is always made in LKR, converted at the applicable exchange rate at the time of the transaction.

LKR

Sri Lankan Rupee

USD

US Dollar

GBP

British Pound

EUR

Euro

AUD

Aus Dollar

JPY

Japanese Yen

INR

Indian Rupee

CHF

Swiss Franc

CAD

Canadian Dollar

SGD

Singapore Dollar

Built on Four Years of Processing Real Payments

OnePay was launched in 2021 by Spemai Pvt Ltd, a technology company backed by a Japanese corporate investor since 2019. In the years since, it has grown into one of Sri Lanka's most widely used payment infrastructures.

• LKR 10B+ In payment volume processed
• 4,500+ Active merchants onboarded
• ISO 27001 Information security certified

OnePay was Sri Lanka's first payment gateway to achieve ISO 27001 certification, the global standard for information security management. For a business owner, that is not a technical footnote. It means the checkout your customers are typing their card details into has been independently audited against an internationally recognised security standard.

From Cart to Confirmed Payment, in One Smooth Page

Three Ways to Use OnePay Unified Checkout

OnePay Checkout is not locked to a single setup. Choose the path that matches how technical your team is and how quickly you want to launch.

1. Hosted Checkout, No Code Required: Generate a payment link from your OnePay dashboard and share it anywhere. The customer taps the link and lands directly on your branded OnePay Checkout page.

2. Embedded Checkout for Your Website: Using OnePay JS, developers can embed the checkout experience directly into an existing website or app.

3. Full API Integration:For businesses with custom platforms, OnePay's REST API and SDKs allow complete control over the payment flow.

// Example: creating a payment link via the OnePay API
POST https://api.onepay.lk/v1/payment-links
{
  "amount": 25000.00,
  "currency": "LKR",
  "reference": "ORD-2024-00847",
  "description": "Order payment",
  "app_id": "your_app_id"
}

What Makes a Payment Gateway Actually Convenient

Frequently Asked Questions