---
title: "Mobile POS"
url: "https://mahouse.world/glossary/mobile-pos"
type: "glossary term"
topic: "Point of sale"
author: "Ihor Vlasov"
reviewed: "2026-09-20"
published: "2026-08-10"
---

# Mobile POS

Mobile POS is card acceptance on a phone or tablet — originally a small reader plugged in or paired by Bluetooth, now increasingly the phone's own NFC — combined with a payment-facilitator model that onboards the merchant in minutes at a flat rate. Square's 2010 reader made it a category; iZettle, SumUp and their peers spread it across Europe; and it is how tens of millions of small merchants first accepted cards.

**Also known as:** mPOS, Mobile point of sale, Card reader for phones

## Key facts

- **Used at:** market stalls, tradespeople, cafés, pop-ups, taxis, small retail, events — any merchant too small or too mobile for a traditional terminal and a merchant account
- **Binding:** the schemes' rules for mobile acceptance devices (certified readers, PIN entry on the device or on the reader depending on the region, contactless limits), PCI requirements on the reader and app (the P2PE-style encryption in the reader keeps the phone out of scope), and the facilitator's own terms
- **Typical economics:** a reader sold at or below cost (€20–80), a flat blended rate of 1.5–2.75% with no monthly fee, instant onboarding as a sub-merchant of the provider's facilitator account, next-day or instant payouts; the provider earns the spread on small merchants' volume and sells software, capital and banking on top
- **Typical evolution:** reader-plus-phone → integrated terminals with software → tap-to-pay on the phone itself (no reader) → a small-business platform of which payments are one part; the readers' makers became banks and lenders (Square's Cash App and loans, SumUp's accounts)
- **Parties:** the mPOS provider (a facilitator and software company), the merchant, the reader manufacturer, the schemes, and the acquirer and sponsor bank behind the facilitator

## How mobile POS works in practice

A market trader orders a reader online for €29 and installs the app. The app onboards her as a sub-merchant of the provider's facilitator account in five minutes — identity, bank details, a category. The next morning a customer taps a card on the reader; the reader encrypts the card data and sends it to the phone, the app sends it to the provider, the provider's acquirer authorises, and the trader's app shows "approved". She pays 1.75%; the money is in her bank account the next day, or instantly for a fee. She never met an acquirer, signed a merchant agreement she read, or bought a terminal on a four-year lease.

The category's economics were the facilitator model's: thousands of tiny merchants, each unprofitable to underwrite individually, onboarded by rule under one master account; a flat rate that hides the interchange arithmetic and earns a fat margin on domestic debit; and a platform that, once the merchant's sales run through it, can sell her invoicing, a business account, a loan against her card receipts and payroll. The hardware was the door; the software and the finance were the house. The current step removes the hardware: tap-to-pay on the phone itself, certified by the schemes, makes the reader optional.

For payments M&A the mPOS companies were the deals of the 2010s — iZettle, Zettle's rivals, the regional players — and their successors are small-business platforms valued as software.

## Example

An mPOS provider has 900,000 active merchants averaging €2,000 of monthly card volume — €21.6bn a year — at a blended 1.7%: €367m of gross revenue, €150m net after interchange and scheme fees. Its readers cost it €35 each against a €29 price; onboarding costs €4 per merchant by automation; churn is 30% a year, mostly merchants who stop trading. Software subscriptions add €40m, a business account and card add €25m of interchange and interest, and merchant cash advances against card receipts add €30m of margin on €400m advanced. A strategic buyer values it at €3bn: not the readers, but 900,000 small businesses whose money flows through a platform that can sell them everything.

## Common mistakes

- Pricing mPOS on the reader's hardware economics rather than the platform's.
- Onboarding by rule without the velocity and category checks that catch the fraudsters who also like five-minute onboarding.
- Readers certified for one region sold in another.
- Assuming the small-merchant blended margin is durable as merchants grow and learn interchange-plus.
- Buyers valuing the merchant count without the churn that a small-merchant base carries.

## Related terms

- [Point of Sale](https://mahouse.world/glossary/point-of-sale.md)
- [Tap to Pay](https://mahouse.world/glossary/tap-to-pay.md)
- [Payment Facilitator](https://mahouse.world/glossary/payment-facilitator.md)
- [Contactless Payment](https://mahouse.world/glossary/contactless-payment.md)
- [EMV](https://mahouse.world/glossary/emv.md)
- [Take Rate](https://mahouse.world/glossary/take-rate.md)

— Ihor Vlasov, M&A FinTech Expert. Last reviewed 2026-09-20. https://mahouse.world/authors/ihor-vlasov