VietQR

Introduction

VietQR uses a redirect-based payment flow. When a customer selects VietQR at checkout, they are redirected to a hosted page displaying a QR code. The customer scans the QR code using their banking app to confirm payment, then returns to your website or app upon completion. VietQR is a single-use payment method.

This guide explains the process of integrating VietQR into your app or website using Payrails.

Pre-requisites

Before you start accepting VietQR payments with Payrails, there are a few requirements you must meet:

1. Integrate with Payrails using one of our SDKs or our API
2. Configure a new integration account for VietQR via dLocal as a Payment Service Provider. If you do not have a dLocal integration already configured in your workspace, please follow the dLocal integration setup guide first.
3. Enable VietQR as a payment method in your dLocal integration configuration. In the Payrails portal, navigate to Settings → Integrations, select your dLocal integration instance, and enable the VietQR checkbox under Payment methods, then save the account.
4. Enable VietQR as a payment option in your workflow.
5. Make sure you're sending the VietQR-specific meta fields in your requests.

Ways to integrate VietQR

Payrails SDK

The simplest way to use VietQR with Payrails is to use our drop-in in your checkout flow. With this integration type, no additional work is required to accept payments with VietQR except for handling success/failure screens for your users.

For a more flexible implementation using our SDK, you can use our genericRedirectButton element. See special instructions here for your client-side implementation.

Server-to-server integration

You can integrate VietQR by completely managing your own client-side implementation, and using Payrails APIs with a server-to-server integration to process VietQR payments.

Parse VietQR from lookup response

With a server-to-server integration, you can call our lookup payment options endpoint to get available payment options. As shown in the example below, you can see vietQR returned as an option of the paymentCompositionOptions.

{
  "name": "lookup",
  "actionId": "0bb6413e-cabb-4074-99e6-9e815c69f25b",
  "executedAt": "2026-03-26T12:00:00.000000000Z",
  "data": {
    "paymentCompositionOptions": [
      {
        "integrationType": "redirect",
        "paymentMethodCode": "vietQR",
        "description": "VietQR"
      }
    ]
  },
  "links": {
    "execution": "https://api.payrails.io/merchant/workflows/payment-acceptance/executions/83c534ac-13b7-43e6-b04b-f3e8b4eb4424",
    "authorize": {
      "method": "POST",
      "href": "https://api.payrails.io/merchant/workflows/payment-acceptance/executions/83c534ac-13b7-43e6-b04b-f3e8b4eb4424/authorize"
    }
  }
}

Pass VietQR payment method in request to authorize payment with Payrails

You can then make a request to our authorize a payment endpoint with vietQR as the paymentMethodCode. See an example below:

{
  "executionId": "c0fd1c51-e709-47e5-bfd1-5d1c98f7d990",
  "amount": {
    "value": "700000",
    "currency": "VND"
  },
  "paymentComposition": [
    {
      "integrationType": "redirect",
      "paymentMethodCode": "vietQR",
      "amount": {
        "value": "700000",
        "currency": "VND"
      }
    }
  ],
  "meta": {
    "customer": {
      "name": "Nguyen Van A",
      "email": "[email protected]",
      "country": {
        "code": "VN"
      }
    }
  },
  "returnInfo": {
    "success": "https://mysuccessurl.com",
    "error": "https://myerrorurl.com"
  }
}

Note on amounts: VND uses 2 decimal places but is typically quoted as whole numbers. Amounts should be provided in the smallest currency unit.

Note: VietQR is a redirect-based, single-use payment method. After calling the authorize endpoint, the customer will be redirected to a hosted page displaying a QR code. The customer scans this with their banking app to confirm payment. Once confirmed, the customer will be redirected back to the returnInfo.success URL.

Handle the redirect response

After the customer completes the payment, they will be redirected back to your success or error URL. You should then verify the payment status by checking the workflow execution status via the Payrails API or by listening to webhook notifications.

Supported currencies

VietQR via dLocal supports the following presentment currency:

• VND — Vietnamese Dong

Supported regions / countries

Customer regions

VietQR is available to customers based in:

• Vietnam 🇻🇳

Merchant regions

Merchants enabled for Vietnam can accept VietQR payments via dLocal.

Supported workflows and services