Accepting mobile money at the till: a practical POS checklist

Customers already pay with mobile money. The shop’s problem is usually the paper trail: a till that only knows cash, plus a phone that received the ping. By close of day nobody can prove the two match. A POS should record the method on the same sale as the basket.

What “integration” means in a small shop

You do not always need a bank-grade API on day one. You do need every sale tagged as cash, card, mobile money, or transfer — and a total per method when you cash up. If a customer paid on M-Pesa, that sale must not also sit in the cash drawer count.

Set up the till

• Add mobile money (and bank transfer) as payment methods next to cash and card.
• Train cashiers to pick the method before they finish the sale — not after.
• If you use a provider such as Paystack where it is available, connect it so card and mobile-money confirmation live in one place.
• Keep a Bluetooth printer or PDF/QR receipt so the customer leaves with proof.

The close-of-day check

At close, compare: cash in the drawer vs cash sales; mobile-money total vs the provider or SIM statement; card vs the machine batch. Differences should be investigated the same day, not “next week when we have time”.

Common mistakes

• Recording mobile money as cash “because it is still money”.
• Letting customers pay on the owner’s personal number with no sale in the POS.
• No receipt, so refunds become an argument.
• Mixing till cash with mobile-money cash-outs in the same pocket.

If you operate in more than one country

Payment rails differ (M-Pesa, other wallets, EFT, cards). The POS should let you set store currency and the methods you actually offer — not assume one network everywhere.