Do I Need an EPOS System or Just a Card Reader?

If all you need is to take payments, a card reader is enough. You need an EPOS system when your till has to do more: track stock, control who can do what, run tables or manage more than one site.

What is an EPOS system?

EPOS stands for electronic point of sale. It is the software and hardware you use to ring up a sale.

A typical set-up has a touchscreen, a card machine, a receipt printer and sometimes a cash drawer. The software behind it records every sale as it happens. That data becomes your stock levels, your daily takings and your sales reports.

Many systems are cloud-based. That means your sales data is stored online, so you can check it from a phone or laptop away from the till. Think of it as a digital till that also keeps a record of what you sell.

What does a card reader do?

A card reader takes the payment. The customer taps, inserts or swipes; the payment is approved, and the money is on its way to your account.

That is the core job. Some devices now add a product list, split payments, cash logging and live reports. That pushes a card machine closer to a basic till, but most stop short of full stock control and multi-site management.

For a full breakdown of device types and how they connect, read our guide to what a card machine is and how it works. To see ways of taking a payment without a machine at all, read how to take card payments.

When a card reader is enough

A card reader is likely to be enough if:

• You sell a small range of products or services.

• You do not need to count stock item by item.

• One or two people take payments.

• You trade at markets, on the road or at customers' premises.

• Daily takings totals are all the reporting you need.

• You are starting out and want less to set up and less to commit to.

A simple set-up is not a weak one. If it covers what you do, it is the right one.

When you need an EPOS system

An EPOS system earns its place when the till has to carry more of the business. Look for these signs:

• You hold stock. If you sell products in different sizes, colours or variants, an EPOS system updates stock as each sale goes through. You see what is running low before it costs you a sale.

• Several people use the till. Individual logins let you control who can give refunds or discounts, and see who took what.

• You run tables, tabs or bookings. Systems built for hospitality handle open tabs and bookings in one place.

• You have more than one site. Some systems let you change a price once and update every till. The TakePayments EPOS, one of the options on our panel, includes central price management and lets you manage multiple stores from one place.

• You want to know what sells. Sales reports show your best sellers and your busiest times, so you can order and staff around real numbers.

• You take a lot of cash and card. An EPOS system can record both in one report, so you are not reconciling two sets of figures.

What each one costs

Costs depend on the provider. What matters is knowing which costs to look for.

With a card reader:

• The device, either rented monthly or bought outright.
• A fee on each transaction, usually a small percentage of the sale.
• Sometimes a monthly service charge.

With an EPOS system, you can expect all of the above, plus:

• A software subscription, often monthly.
• Hardware such as a screen, printer and cash drawer.
• Extras such as stock, booking or accountancy tools, depending on the system.

Whichever you choose, compare the total cost over the whole contract, not the headline rate. Check for a minimum monthly spend, early termination charges and PCI compliance fees. That last one is a charge some providers add for meeting card security standards.

Our guide to card processing fees explains what goes into the fee on every sale.

Do you need digital sales records?

If you are a sole trader or landlord, this may affect your choice.

According to GOV.UK, Making Tax Digital for Income Tax started on 6 April 2026 for sole traders and landlords with qualifying income above £50,000. Qualifying income is your gross income from self-employment and property. It means keeping digital records and sending HMRC quarterly updates through compatible software. The House of Commons Library confirms the threshold falls to £30,000 from April 2027 and £20,000 from April 2028. HMRC does not provide the software itself.

Neither a card reader nor an EPOS system does this on its own. What matters is whether your sales data can move into your accounting software. Ask any provider what it can export, and in what format. Your accountant can tell you which rules apply to you.

Can you start with a card reader and add an EPOS system later?

Yes. A card reader is a sensible place to start if you are unsure. You can move to an EPOS system when stock, staff or a second site makes the till do more work.

Before you sign, check the contract length and any early exit charges. Ask whether your provider offers an upgrade path, so a later move does not mean starting again.

Considerations 

As a rule of thumb, two or more yes answers point towards an EPOS system.

• Do you need to track stock item by item? 
• Do you have several members of staff? 
• Do you need to manage tables or bookings? 
• Do you have multiple sites? 
• Do you need weekly detailed sales reports?