3 weeks ago
How to Integrate Lipa na MPesa (STK) to Zidi POS
M-Pesa integration has transformed how businesses handle digital payments in Kenya and across Africa. With millions of active users, M-Pesa is the go-to mobile money service for everything from online shopping to utility payments. For businesses, understanding how to integrate the M-Pesa API (Daraja API) into a website, mobile app, or POS system is now essential. Customers demand fast, secure, and reliable mobile money payments, and M-Pesa Daraja API integration makes that possible.
What is M-Pesa Integration?
M-Pesa integration is the process of linking your POS, mobile app, or website to Safaricom’s M-Pesa system via the Daraja API. This connection enables you to:
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Receive customer payments (C2B – Customer to Business) directly into your Till or Paybill account
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Send money to customers or suppliers (B2C – Business to Customer)
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Transfer funds between business accounts (B2B – Business to Business)
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Confirm and track transactions in real time without relying on SMS messages
Why Integrate M-Pesa into Your Business?
Businesses see clear advantages when they integrate M-Pesa API into websites, apps, or POS systems:
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Seamless checkout – Customers complete payments without leaving your platform.
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Instant confirmation – Real-time payment updates reduce delays.
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Error reduction – Automated updates replace manual message entry.
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Improved customer experience – A faster, smoother way to pay.
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Security – Transactions go through Safaricom’s secure servers.
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Reconciliation – Easy accounting with automatic records.
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Scalability – Works for SMEs, enterprises, and retail chains alike.
Types of M-Pesa API Transactions
Safaricom’s Daraja API supports several transaction models:
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C2B (Customer to Business): Customers send money to your Paybill/Till, and your system is notified instantly.
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B2C (Business to Customer): Businesses send money to customer wallets (e.g., refunds, payroll).
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B2B (Business to Business): Transfers between business accounts for suppliers and partners.
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STK Push (Lipa na M-Pesa Online): Customers approve payments via a prompt on their phone.
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Transaction Status & Reversals: Verify pending payments and handle refunds automatically.
Step-by-Step: How to Integrate M-Pesa
- Acquire a Paybill or Till Number
Apply for a Paybill or Till Number from Safaricom. This is your business account for receiving payments. -
Register on the Safaricom Developer Portal
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Visit the Daraja Developer Portal.
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Create an account and generate Consumer Key & Consumer Secret.
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Start with the Sandbox environment (testing mode).
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Configure Your Platform
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Set up secure API endpoints for payment confirmations.
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Configure your Paybill/Till details.
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Implement STK Push for smooth checkout.
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Ensure your system can handle callback URLs for notifications.
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Test in the Sandbox
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Run simulated transactions.
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Confirm real-time updates, receipts, and reversal handling.
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Request Go-Live Credentials
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Apply for production credentials.
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Submit required business documents (registration certificate, KRA PIN, etc.).
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Go Live
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Replace test credentials with live ones.
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Begin accepting real M-Pesa payments.
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M-Pesa Integration Across Platforms
- Websites
- Ideal for e-commerce, service providers, and online marketplaces.
- Customers checkout with M-Pesa via STK Push or Paybill.
- Instant confirmations improve customer trust.
- Mobile Apps
- Perfect for ride-hailing, food delivery, betting, and subscription apps.
- Deep integration allows customers to pay without leaving the app.
- Works seamlessly with in-app wallets and loyalty programs.
- POS Systems
- Retail stores, supermarkets, and restaurants benefit from real-time payment updates.
- Instead of checking SMS, the cashier sees payment confirmation on the POS instantly.
- Reduces fraud and speeds up checkout lines.
Best Practices for Seamless M-Pesa Integration
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Test extensively in the Sandbox before going live.
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Keep API credentials and passkeys secure.
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Train staff on payment flow and refund handling.
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Ensure stable internet for uninterrupted callbacks.
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Reconcile daily with M-Pesa statements.
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Work with an experienced developer or integration partner.
Why M-Pesa Integration Matters for Your Business
M-Pesa integration for websites, mobile apps, and POS systems offers businesses a powerful edge: secure, automated, and customer-friendly payments. By following the steps from acquiring a Paybill/Till, registering on the Daraja portal, testing in the Sandbox, and going live businesses can fully unlock the potential of mobile money. In today’s digital-first world, offering M-Pesa API integration is just as important as the products and services you sell. With it, your business is ready to serve customers faster, more securely, and more efficiently.