KCB paybill number
The official paybill number is 522522 . See below for steps by steps instructions on how to make payments via M-pesa
How to send money from Mpesa to KCB (Paybill)
Open Safaricom SIM Toolkit (ATK) from your phone
Go to Mpesa
Select Lipa na Mpesa
Select PayBill option
Enter 522522 as the Business Number.
Enter your account number : the KCB account number you want to deposit money to.
Enter the amount 1300
Enter your M-pesa PIN to confirm the purchase
Click Send and wait for a confirmation from M-pesa and KCB
KCB has two major paybill numbers. One is for depositing money from Mpesa to your KCB account, and the other is used by businesses to accept payments from customers using the Lipa na KCB service.