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M-Pesa Integration for Chamas — Stop Chasing Screenshots

How M-Pesa STK push and C2B integration transform chama payment collection from chaos to automation.

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Every chama treasurer knows the drill. It's the 5th of the month. You've sent the "reminder" on the WhatsApp group. Members start sending screenshots. Some are from today. Some are from last month. Some are cropped suspiciously. And now you need to match 20 screenshots to 20 expected payments.

There's a better way.

How M-Pesa STK Push Works

STK Push (Sim Toolkit Push) is the technology behind "Lipa na M-Pesa" prompts. Instead of the member initiating the payment, the system sends a payment request directly to their phone:

  1. Member clicks "Pay" in the app
  2. A prompt appears on their phone: "Pay KES 1,000 to Chama Name"
  3. Member enters their M-Pesa PIN
  4. Payment is confirmed instantly
  5. Transaction is automatically recorded in the system

No screenshots. No manual confirmation. No disputes.

C2B (Customer to Business) Auto-Matching

For chamas with a Paybill number, C2B integration takes it further. When a member sends money to your Paybill:

  1. Safaricom sends a real-time notification to your system
  2. The system matches the payment to the member (using phone number or account reference)
  3. The contribution is automatically recorded and confirmed
  4. If the system can't match it, it goes to a "pending" queue for manual review

This means payments arrive and get recorded even if the member doesn't log into the app.

What About Till Numbers?

Till numbers (Buy Goods) work differently from Paybill numbers and have limited integration options. For chamas that want full automation, a Paybill number is recommended. MyChama supports both STK Push (works with any shortcode) and C2B callbacks (requires Paybill).

The Real Benefit: Trust

When payments are confirmed automatically by M-Pesa — not by the treasurer's manual entry — nobody can question whether a payment was made. The receipt comes from Safaricom, not from a person. This removes the treasurer from the hot seat and puts the data in charge.

Getting Set Up

You'll need:

  • A Safaricom Business account (Paybill or Till)
  • API credentials from the Safaricom Developer Portal
  • About 15 minutes to configure in MyChama settings

The Free plan includes manual payment recording. STK Push is available from the Starter plan, and C2B auto-matching from Professional.

Automate your collections →