Choosing a card machine: countertop, portable or mobile?
The right card machine depends on one question: where does the customer pay? At a fixed counter, at their table, at their door, or wherever your van happens to be parked? Answer that and the terminal type mostly chooses itself. The harder decisions — connectivity, settlement, integration and how you acquire the device — are where businesses actually go wrong.
The four types of card machine
- Countertop terminals plug into power and connect by ethernet or Wi-Fi. They are the workhorse for shops, salons and takeaway counters: fast, reliable, always where you left them. If every payment happens at one till point, this is usually the answer.
- Portable terminals connect to a base station or Wi-Fi and roam within your premises. This is the pay-at-table standard for restaurants, pubs and cafés — the card never leaves the customer's sight, tips are handled at the point of payment, and tables settle faster on busy nights.
- Mobile terminals use a 4G/5G SIM and work anywhere with signal. Delivery drivers, trades on site, market traders, mobile hairdressers — if you take payment away from your premises, you need one of these. Check whether the SIM and data are included in the rental and who pays for coverage you cannot get.
- Pocket card readers pair with a phone app over Bluetooth and typically charge a fixed percentage per transaction with no monthly contract. Superb for new, low-volume or seasonal businesses — but as card turnover grows, the flat per-transaction pricing usually ends up costing more than a contracted terminal. Many businesses start on a reader and outgrow it without noticing.
Connectivity: the boring detail that ruins Saturdays
A card machine is only as good as its connection. Think about what happens on your busiest day: ethernet is the most stable for a fixed counter; Wi-Fi is fine if your router is business-grade and not shared with the customer hotspot; 4G terminals need actual signal inside your building, not just outside it. Ask for a terminal with a fallback — Wi-Fi with 4G backup — if losing card payments for an hour would genuinely hurt. If your premises are in a signal blackspot, test before you commit.
Features worth checking for your trade
- Contactless is now the default expectation. Most UK banks currently keep the contactless limit at £100 per tap, though since March 2026 the FCA lets providers set their own limits; above your card's limit, customers insert and use their PIN. Any modern terminal handles both, plus Apple Pay and Google Pay.
- Tipping and gratuity prompts — hospitality should check how tips are captured and reported; it affects both staff and bookkeeping.
- EPOS integration — if the terminal talks to your till system, the amount passes across automatically and mis-keyed charges disappear. If you run a till or ordering system already, ask which terminals integrate before choosing the acquirer, not after.
- Virtual terminal / payment links — if you take orders by phone (takeaways, trade counters, deposits), you need a way to take card-not-present payments. Note these are charged at higher rates than in-person payments because the fraud risk is higher.
- Settlement time — how quickly the money reaches your bank account. Next-business-day is common; faster settlement is sometimes available. For a cashflow-tight business this can matter more than a small rate difference.
- Receipts and reporting — email/SMS receipts, end-of-day reports, and an online dashboard your bookkeeper can pull statements from.
Rent, buy or lease — read this twice
Most contracted terminals are rented monthly from the acquirer, which is clean: switch provider, hand the terminal back. Pocket readers are usually bought outright for a modest one-off cost. The arrangement to treat with real caution is the long-term lease through a separate finance company — historically the source of more complaints than any other part of this industry. The lease is a separate contract from your card processing: cancel the processing and the lease payments continue, sometimes for years. Before signing anything, ask directly: "Is this device rented from you, or leased through another company? What is the total cost over the full term, and what happens if I switch acquirer?"
Matching machine to business, quickly
- Takeaway or café counter: countertop terminal, ideally EPOS-integrated, with a virtual terminal for phone orders.
- Restaurant or pub: portable pay-at-table terminals with tipping prompts; count how many you need for a full Friday service.
- Retail: countertop at the till; add a pocket reader if you also sell at fairs or pop-ups.
- Trades and mobile services: a 4G mobile terminal or a pocket reader plus payment links for invoicing.
- Just starting out: a pay-as-you-go reader — then review the numbers once card takings become steady.
Get the terminal and the rate right together
The machine and the processing contract come as a package, and the cheapest rate on the wrong terminal is a false economy. SwitcherMate Ltd's UK-based payments specialists match the terminal to how you actually trade and compare providers on true effective cost — free to your business, paid by commission from the provider you choose, disclosed openly. Fill in the quote form on our homepage and a specialist will call you back the same working day where possible.
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