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Use M-Pesa B2B when you need to pay a business through an M-Pesa PayBill or Till number. This is typically used for supplier payments, bills, and business-to-business settlement.

Transaction fields

Pay a PayBill

Pay a Till number

For Till payments, set account_type to TillNumber and omit account_reference.

Validate before sending

Use POST /api/v1/send-money/validate-accounts/ to confirm the PayBill or Till account before initiating a payout.