In Kenya, cash-on-delivery and manual Till number transfers are rapidly giving way to seamless, automated checkout. When a customer browses your online shop at 11:00 PM, they expect to enter their Safaricom phone number, enter their M-Pesa PIN on their phone, and receive an instant order confirmation.
If your online store forces customers to open their SIM toolkit, manually type a Paybill number, copy an account number, and paste a 10-character confirmation SMS back into WhatsApp, you are losing up to 40% of completed checkouts.
Here is how automated M-Pesa integration works for Kenyan websites and what is required to set it up.
1. What Is M-Pesa STK Push?
STK (SIM Toolkit) Push (technically called Lipa na M-Pesa Online) is Safaricom's automated prompt service.
When a shopper reaches your website checkout:
- They select M-Pesa as their payment method.
- They enter their phone number (e.g.
0712 345 678). - Within 3 seconds, a popup prompt appears automatically on their mobile phone screen:
"Do you want to pay KES 2,500 to [Your Business Name] Account [Order #1042]? Enter M-Pesa PIN:"
- Once the customer enters their PIN, Safaricom's Daraja API notifies your website in real time.
- The order status automatically switches from Pending to Paid, stock is deducted, and receipts are sent to both the buyer and seller via SMS or email.
Zero manual verification required.
2. The Two Ways to Integrate M-Pesa
Option A: Direct Safaricom Daraja API Integration
With this approach, your website connects directly to Safaricom's official developer portal (Daraja).
- Requirements: A registered business name, Safaricom Lipa na M-Pesa Till Number (Buy Goods) or Paybill Number, Certificate of Incorporation/Registration, and KRA PIN certificate.
- Benefits: Funds settle directly into your bank or Safaricom merchant account with standard Safaricom tariffs.
- Best For: Established businesses with high daily transaction volumes.
Option B: Payment Aggregators (Paystack, Pesapal, Flutterwave)
Aggregators offer pre-built M-Pesa and card processing modules.
- Requirements: Lighter onboarding requirements; some accept sole proprietorships or registered business certificates.
- Benefits: Handles both M-Pesa and Visa/Mastercard credit cards in a single unified checkout.
- Best For: Fast launches, boutique stores, and businesses wanting both local mobile money and international cards.
3. What Does M-Pesa Integration Cost?
At Cradle Software, automated M-Pesa STK Push is built directly into our Commerce Package (from KES 75,000).
Here is the cost breakdown:
- Development & STK Push Setup: One-time integration fee included in your online store build.
- Safaricom Daraja API Access: Safaricom does not charge an upfront API fee for developer credentials.
- Transaction Fees: Standard merchant processing fees (typically 1.5% to 3% depending on whether you use direct Safaricom Till or an aggregator) deducted automatically per transaction.
4. Key Security & Compliance Requirements
When taking payments on a Kenyan website, customer trust is paramount:
- SSL Encryption (HTTPS): Mandatory. Payment tokens and checkout details must never pass over unencrypted HTTP.
- Instant Webhook Validation: Your website backend must cryptographically verify callbacks from Safaricom before marking orders as paid.
- Data Protection Act 2019: Customer phone numbers and addresses must be stored securely and never shared with unauthorized third parties.
5. Ready to Automate Your Online Sales?
Stop losing customers to clumsy manual Paybill copy-pasting.
At Cradle Software, we build fast, beautiful online stores with automated Safaricom M-Pesa checkout, stock management tools, and automated WhatsApp notifications.
- Learn more about our Online Store Commerce Package.
- Check full inclusions on our Pricing Page.
- Book a project consultation or chat with our engineering team on WhatsApp (+254 710 870 887).