Bank of Ayudhya

As Thailand's digital economy develops, the structure of its payment market has become increasingly mature. Online bank transfer remains one of the most trusted online payment methods for local consumers. In 2024, they dominated online transactions with a 44% share. This trend highlights Thai consumers' strong trust in the banking system, presenting significant opportunities for commercial banks' digital transformation.

As a key player in Thailand's financial system, Bank of Ayudhya (BAY), founded in 1945, has grown into the country's fifth-largest commercial bank, serving 9.5 million users and operating 601 branches. Its online bank transfer service is deeply woven into the daily lives of Thai consumers. From e-commerce shopping and utility bill payments to mobile top-ups, education fees, and flight and hotel bookings, BAY's customers can seamlessly complete transactions through online banking. This wide-reaching scenario coverage makes BAY an essential bridge between traditional payment habits and modern e-commerce payment needs, helping to propel the digitalisation of Thailand's payment industry.

In Thailand, a large number of consumers still prefer cash or bank transfers for payments. Bank of Ayudhya's online transfer service is tailor-made for this segment, allowing them to pay through a familiar bank interface or ATM without having to adopt new mobile payment tools. Additionally, the service supports a high transaction limit of up to THB 2,000,000, accommodating everything from everyday purchases to large-value spending. This offers a flexible and convenient payment solution for consumers at all spending levels.

For merchants seeking to expand into the Thai market, adopting Bank of Ayudhya's online transfer enables them to tap into the country's vast banking population and seamlessly integrate into the local payment ecosystem. These users, spread across all regions of Thailand, including many second- and third-tier cities, possess stable purchasing power and high brand loyalty. As Thailand's digital payment landscape continues to improve, Bank of Ayudhya's online bank transfer, with its broad user base and extensive scenario coverage, will become a reliable choice for merchants seeking deeper market penetration and wider payment coverage in Thailand.

Properties

The following table lists the product properties supported by Bank of Ayudhya for different payment types:

User experience

Note: The following payment flows on different terminals are for reference only. For supported merchants' terminal types, consult Antom Technical Support.

The following screenshots show the journey of paying with Bank of Ayudhya through app in different scenarios.

Online banking

1. The buyer selects BAY to pay.

2. The buyer completes the payment on the BAY page.

3. The buyer is redirected to the merchant's result page.

Bank transfers
 
1. The buyer selects BAY to pay.

2. The buyer is redirected to the payment code page.

3. The buyer opens the bank app manually.

4. The buyer selects the order bill to pay on the bank page.

5. The buyer searches the bill code on the bank page.

6. The buyer enters the bank account and payment code.

7. The buyer confirms the order information.

8. The bank page displays the payment result.

9. The buyer is redirected back to the merchant's result page.

FAQ

1. Does the Thai government provide policy support for online bank payments?

In recent years, the Thai government has actively promoted the National e-Payment Master Plan, encouraging citizens to use digital services from regulated financial institutions. As Thailand's fifth-largest commercial bank, BAY's online bank transfer services fully comply with regulatory requirements and are supported by national payment infrastructure, such as PromptPay. This creates a stable and policy-backed payment environment for merchants.

2. In which regions of Thailand are BAY online banking users mainly located?

Beyond a solid user base in major cities like Bangkok, BAY's network of 601 branches extends deep into second- and third-tier cities, as well as rural areas. This enables merchants that integrate BAY online banking to access users nationwide, especially in regions where e-commerce penetration remains relatively low but consumer growth potential is substantial.

3. What unique value does integrating BAY online banking bring to merchants seeking to expand into Thailand?

With 9.5 million customers, Bank of Ayudhya serves users characterised by stable purchasing power and strong credit profiles. Integrating BAY online banking allows merchants to access this premium customer segment while benefiting from the inherent trust and credibility of bank-based payment channels. For merchants offering high-value items or premium services, BAY's high single-transaction limit of up to THB 2,000,000 makes it an ideal payment solution.

4. How complex is it to integrate BAY online banking via Antom?

Antom has already completed core system integration with BAY, so merchants don't need to handle separate technical integration with the bank. We provide standardised API interfaces and a management console, enabling merchants to go live within 1 to 2 weeks. For teams with limited technical resources, Antom offers a hosted checkout solution, further lowering the integration barrier and allowing merchants to focus on business operations rather than technical details.

Scale your business in the Thai market now with Bank of Ayudhya's extensive user base and bank-grade security standards. Contact Antom today to integrate with ease.