How to Accept KHQR Payments in Cambodia

KHQR is built on the EMVCo QR Code Specification for Payment Systems, the same international standard used by PromptPay in Thailand, PayNow in Singapore, and DuitNow in Malaysia. The EMVCo standard defines a structured data format encoded within a QR code that includes merchant identifier, acquirer information, transaction currency, amount (for dynamic QR), and a CRC checksum for data integrity. The NBC adopted EMVCo to ensure international interoperability from day one. This means KHQR codes are technically compatible with any EMVCo-compliant payment app, which is what enables cross-border QR acceptance with Thailand, Malaysia, and other corridor partners. The standard supports both merchant-presented QR (the merchant displays a code) and consumer-presented QR (the customer displays a code for the merchant to scan).

To accept KHQR payments, a business must register through a participating bank or licensed payment service provider (PSP). The registration process involves submitting business registration documents, a valid tax identification number, bank account details for settlement, and the business owner's identity verification (increasingly through CamDigiKey). Once approved, the acquiring bank issues a unique Merchant ID and generates the KHQR code. For physical locations, this is typically a printed static QR code displayed at the point of sale. For e-commerce, the merchant receives API credentials to generate dynamic QR codes per transaction. Registration typically takes three to five business days, though some banks offer expedited same-day onboarding for existing customers.

For brick-and-mortar businesses, KHQR integration ranges from zero-tech to fully automated. The simplest approach is a printed static QR code displayed at the checkout counter. The customer scans it, enters the payment amount, and confirms. The merchant receives a push notification from their bank app confirming receipt. For higher-volume operations, dynamic QR integration with the POS system is recommended. The POS generates a transaction-specific QR code that includes the exact amount, eliminating manual entry errors. When the customer pays, the Bakong callback confirms the transaction and the POS automatically marks it as paid. CamFinTech implements both approaches and recommends dynamic QR for any business processing more than 50 transactions per day.

For online businesses, KHQR integration requires generating dynamic QR codes on the checkout page and listening for payment confirmation via webhook callbacks. The merchant's acquiring bank provides API endpoints for QR generation and payment status queries. Several banks offer SDKs in common programming languages including JavaScript, Python, PHP, and Java. The typical integration flow is: the checkout page calls the bank's API to generate a KHQR code with the order amount, displays it to the customer, and listens for a webhook callback confirming payment. CamFinTech provides platform-specific integration guides and pre-built plugins for WooCommerce, Shopify, and custom e-commerce platforms.

KHQR transactions settle instantly on the Bakong ledger, and acquiring banks provide reconciliation data through their merchant portals and APIs. Each transaction record includes a unique Bakong transaction ID, timestamp, payer institution, amount, currency, and settlement status. For businesses with multiple outlets or high transaction volumes, automated reconciliation is essential. CamFinTech builds reconciliation pipelines that match KHQR settlement records against the merchant's internal sales records, flagging discrepancies and generating daily reports. The Bakong transaction ID serves as the universal reference for dispute resolution. Most acquiring banks provide transaction data via CSV export, API query, or SFTP push on a daily basis.

One of KHQR's most compelling advantages is its cost structure. The NBC has worked with acquiring banks to keep merchant discount rates (MDR) between 0% and 0.5%, dramatically lower than international card network fees. Some banks waive fees entirely for micro-merchants to accelerate adoption. The low fee structure reflects the NBC's policy objective of driving digital payment adoption across Cambodia's economy. For merchants, the savings compared to card acceptance are substantial, particularly for businesses with high transaction volumes or low margins.

KHQR's cross-border corridors with Thailand's PromptPay, Malaysia's DuitNow, and China's Alipay mean that tourists from these countries can pay at any KHQR merchant using their home country banking apps. The tourist scans the same KHQR code that domestic customers use. The Bakong system identifies the foreign payment source, routes it through the bilateral corridor, performs currency conversion, and settles in the merchant's local currency. For tourism-dependent businesses in Siem Reap, Phnom Penh, and Sihanoukville, this capability eliminates the need for separate Alipay or WeChat Pay merchant registrations. A single KHQR code handles both domestic and tourist payments. CamFinTech advises hospitality and retail businesses on optimizing their KHQR setup for multi-corridor acceptance.

CamFinTech provides end-to-end KHQR integration services tailored to your business type and scale. For small merchants, we facilitate rapid registration through our banking partners and provide staff training on payment acceptance. For medium and large enterprises, we design custom integration architectures covering POS systems, e-commerce platforms, and back-office reconciliation. Our technical team handles API integration, webhook configuration, error handling, and testing against the Bakong sandbox environment. We also provide ongoing monitoring and support to ensure your KHQR acceptance runs smoothly as the NBC introduces new features and cross-border corridors. Whether you are a single-location restaurant or a multi-branch retail chain, CamFinTech ensures you capture the full value of Cambodia's QR payment revolution.