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Online Payment Systems

A Payment Gateway is the intermediary between the customer, merchant, and bank, making online payments secure and trustworthy.

🔄 Online Payment Steps

🛒CustomerClick "Pay"🌐Web/AppMerchantSend data toPayment Gateway💳PaymentGatewayOmise / Stripe2C2P / SCB / KBankEncrypt + VerifyForward to bank🏦BankVerify balanceApprove/DeclineTransfer funds✅ Payment Result (Approved / Declined)
Customer → Merchant
Merchant → Gateway
Gateway → Bank
Payment Result (return)

🇹🇭 Payment Systems in Thailand

📲

PromptPay

Transfer money via phone number / ID card. No transaction fee.

💰 Fee: Free (Bank) / ~0.5-1% (via API)
✅ Best for: Small businesses, peer-to-peer transfers
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Omise (Opn)

Leading Thai Payment Gateway supporting cards, PromptPay, TrueMoney

💰 Fee: 3.65% + 15 THB/transaction (credit card)
✅ Best for: E-commerce, mobile apps, B2B
🔐

2C2P

Enterprise-grade Payment Gateway used by large organizations and banks

💰 Fee: By agreement (Enterprise)
✅ Best for: Large enterprises, high volume
💚

TrueMoney Wallet

Digital wallet popular in the AIS/True ecosystem with a wide user base

💰 Fee: ~1.5-2% per transaction
✅ Best for: Mobile apps, online shops
🏦

KBank / SCB API

Direct bank API integrated with K PLUS and SCB Easy banking apps

💰 Fee: Per bank package
✅ Best for: Businesses requiring direct bank integration
⚡

Stripe

Global Payment Gateway, ideal for international customers and subscriptions

💰 Fee: 2.9% + $0.30/transaction (USD)
✅ Best for: SaaS, international businesses

🛡️ Payment Security Standards

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PCI DSS

Payment Card Industry Data Security Standard

International standard for merchants accepting credit cards. Must not store card data themselves.

🔒

SSL/TLS

Secure Sockets Layer / Transport Layer Security

Encrypts data between the customer and the server, preventing eavesdropping.

📱

3D Secure

Three-Domain Secure (Verified by Visa / Mastercard SecureCode)

Additional identity verification via OTP SMS before the card is charged.

🎫

Tokenization

Card Tokenization

Replaces the card number with a random token so actual card data is never stored in the system.

💡 How to Choose a Payment Gateway?

❓ Thai customers only?
→ Use Omise + PromptPay
❓ International customers too?
→ Use Stripe or 2C2P
❓ Mobile app?
→ Omise or KBank API
❓ Small online store?
→ PromptPay is enough
❓ Monthly subscription?
→ Stripe is the best
❓ Large enterprise?
→ 2C2P or direct bank

Need a payment system for your business? 💳

We integrate Payment Gateways securely and make them easy to use.

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