An EPoS system is the till, the card reader, the scanner and the software that ties them together. It takes payments and records what you sold, so you always have a count of what's left. Most product businesses have one and get along fine with it, at least until they start manufacturing things, importing them, holding stock in more than one place or selling across several channels.
This guide covers what an EPOS system is, how it works, the types available, what you should expect to pay and where it stops being enough.
What Does EPOS Stand For?
EPoS stands for Electronic Point of Sale. It's the computerised version of the traditional cash register. Instead of simply recording a cash total, an EPoS system captures what was sold, at what price, at what time and by which member of staff. It then adjusts your stock figures automatically.
Every EPoS setup combines hardware and software. The hardware is what sits on the counter, usually a touchscreen terminal or tablet, a card reader, a barcode scanner, a receipt printer and a cash drawer. The software is what makes it useful. It records each sale, updates stock levels, produces reports and stores customer records, connected either to a local server or, far more commonly now, to the cloud.
You'll find EPoS systems across retail, hospitality, food and beverage, wholesale, and just about any business selling physical products face-to-face. The core function is the same everywhere. What changes is the peripherals bolted onto it and how the software is set up, because a cafe needs kitchen printing while a clothing retailer needs variant-level product records.
How Does an EPOS System Work?
Each transaction takes a few seconds. Behind the scenes, the system runs through a fixed sequence:
- The product is scanned or selected on the terminal.
- The system looks up the product record and pulls in its price and tax rate, along with any active promotion.
- The customer pays by cash, card, contactless or mobile wallet.
- A receipt is printed or emailed.
- Stock levels for that SKU drop automatically.
- The transaction is written to the sales database for reporting and analysis.
That last step is where a bulk of the value comes from. Every sale feeds a central dashboard showing revenue, margin by product, stock control figures and trading patterns by hour or day. With a cloud-based system, you can pull those numbers up from a laptop at home or a phone whenever you need them.
How much that data is worth depends on how carefully your products were set up in the first place. SKU-level tracking, meaning a unique code for every variant you sell rather than every product line, is what turns a till into a source of usable inventory analytics.
What Are the Key Features of an EPOS System?
Feature sets vary a fair bit between providers, but most modern systems cover the following:
- Payment processing: Cash, chip and PIN, contactless and mobile wallets, usually through an integrated card terminal so amounts never have to be keyed in twice.
- Real-time stock updates: Inventory adjusts with every sale, return, refund and manual correction, giving you a live figure.
- Sales reporting and analytics: End-of-day takings, best and worst sellers, revenue by product or category, and trading patterns you can staff against.
- Staff management: Individual logins, hours worked, sales by employee and permission levels controlling who can void a transaction or apply a discount.
- Customer loyalty and CRM: Customer records with full purchase history, plus points or rewards schemes run straight from the till.
- Accounting integration: Pushing daily sales and cost of goods sold into Xero, QuickBooks or whichever accounting platform you use.
- Multi-channel sync: Connecting in-store sales with your online channels, whether that's Shopify, WooCommerce, Amazon or eBay.
That last capability is especially important. More than a quarter of retail sales in Great Britain now happen online as per ONS figures. A customer might check stock on your website, reserve online, collect in store, then bring it back to a different branch. If your EPoS can’t hold an accurate stock figure across all of these touchpoints, you might end up overselling and refunding.
Types of EPOS Systems
There are four broad setups on the market. The right one depends less on your industry and more on where selling actually happens in your business.
Fixed (or All-in-One)
A fixed EPoS is a stationary terminal built for high-volume trading, whether that's a busy retail floor, a warehouse trade counter or anywhere the till stays put and works hard throughout the day. Touchscreen, card reader, barcode scanner and receipt printer usually arrive as a single unit. It's the most durable and feature-rich option and the least flexible.
Mobile (mPOS)
mPOS is a smartphone or handheld device paired with a portable card reader. This suits market traders, pop-up retailers, delivery drivers and anyone taking payment away from a fixed counter. Upfront cost is low. The trade-offs are a small screen and a hard dependency on mobile signal, and reporting on the device itself is usually thin.
Tablet-Based
Similar to an mPOS, but requires a tablet that may be attached to peripherals as needed. Common in cafes, delis, boutiques and table-service restaurants. Staff already know how the hardware works, which shortens training, and replacing a broken unit costs far less than replacing a proprietary terminal.
Cloud-Based
This is an architecture unlike previous options, which are types of hardware EPoS is available on. With a cloud-based EPoS, your data is stored online rather than on a machine in the back office, which means remote access from any device, automatic updates, multi-site management without a server in each location, and a realistic path to integrating other systems. Cloud is now the default for most growing SMEs, largely because it enables reliable integration in the first place.
EPOS vs POS: What’s the Difference?
POS refers to the point of sale itself, meaning the place and moment a transaction happens. In practice, when people contrast the two, POS means a standalone payment terminal or basic till, while EPOS means an integrated system that connects sales to stock, reporting, accounting and other software. Here’s an overview of core differences between the two:
| Traditional POS | EPoS | |
| Core function | Processes payments and records a total | Records the full transaction, line by line |
| Stock control | Manual counts, separate from the till | Updates automatically with each sale |
| Reporting | End-of-day totals | Product, staff, channel and time-based reporting |
| Integrations | Limited or none | Connects to accounting, eCommerce and inventory tools |
| Record keeping | Often paper-based or exported by hand | Digital by default |
| Multi-site | Each site reports separately | Consolidated view across locations |
There's a tax angle worth noting if you operate in the UK. Since April 2022, every VAT-registered business has had to keep its VAT records digitally and file returns through compatible software, under HMRC's Making Tax Digital rules.
None of that means you need an EPOS system. Retailers using a retail scheme only have to hold one digital sales figure, their daily gross takings, and HMRC's own examples include a shop reading the totals off the till at close and typing them into its accounting software. The catch comes later.
Once those figures are in the software that keeps your VAT records, you can't shuffle them about by hand, so most businesses would rather the numbers move themselves.
For Australian regulatory information, including the removal of Payment Surcharges from 1 October 2026, please refer to the Reserve Bank of Australia website.
Advantages and Disadvantages of an EPOS System
Here's the short version before we get into the details:
| Advantages | Disadvantages |
|---|---|
| Faster, more accurate transactions | Upfront and ongoing costs |
| Automatic stock control | Reliance on a connection |
| Sales data you can act on | Staff training time |
| Integration with accounting and eCommerce | Downtime risk |
| Scales across sites and channels | Limited inventory depth |
| A digital trail for every sale | Cost of switching later |
What Are the Advantages of an EPOS System?
Advantages include:
- Faster, more accurate transactions: Scanning a barcode kills off the two most common till errors, mistyped prices and forgotten discounts. Queues move more quickly, and the takings reconcile cleanly at the end of the day.
- Automatic stock control: Every sale updates inventory in real time. You'll still want to count properly now and then, but you won't have to count just to find out roughly where you stand, and you're far less likely to sell something you don’t have.
- Actionable sales data: You can see what's selling, what isn't, which products are actually making you money and when your busy periods are. All of that helps when you're working out what to order next.
- Integrations: Your sales and costs go straight into Xero or QuickBooks. It saves a few hours a month, and you end up with one set of figures rather than two.
- Scalability: With an EPoS, adding a second till, another site or a new sales channel on a cloud system is a change of settings, not starting again from scratch.
- Loss prevention: Each one is logged with a timestamp, staff ID and the product. If something doesn't add up, you can go and look.
It comes down to knowing your inventory and transactions. With an EPoS, you always know what sold today and what needs ordering, so you don’t have to find out on a Friday afternoon when a customer asks for something that’s out of stock.
What Are the Disadvantages of EPOS Systems?
Disadvantages include:
- Cost: Hardware, software, card fees and training all add up, and the monthly price typically doesn’t give you the full picture.
- Connection problems: Offline modes help, but a long outage still holds up card payments and leaves your stock figures out of date across sites.
- Training time: Staff need at least some training to understand how it works, and things run slower while they learn. Better done in a quiet week than in the run-up to Christmas.
- Downtime risk: If the system goes down, you can't sell properly, and stock stops updating. Ask any provider before signing up how often that happens and how quickly someone picks up the phone.
- Switching later can be a hassle: Changing EPoS means moving your product data, setting up the integrations again, retraining staff and possibly buying new hardware.
- Inventory depth: This is the big one for product businesses. An EPoS records what goes out the door. But it won't hold a bill of materials, trace a batch or serial number, work out landed costs or forecast demand across warehouses. Fine if you're one shop selling finished goods, but a problem if you manufacture things or hold stock in more than one place.
EPOS Systems for Retail: What to Look For
Retail has its own set of demands, and a general-purpose system won't always meet them. If you're looking at EPOS systems for retail specifically, certain features are non-negotiable.
Must-Have Features for Retail EPOS
- Barcode scanning and label printing: Including the ability to print your own labels for own-brand stock or anything that doesn’t have a barcode.
- Multi-location stock visibility: One live figure across every shop, so staff can tell a customer where something is or whether it’s in stock without ringing round.
- eCommerce integration: A proper two-way sync with Shopify, WooCommerce or wherever else you sell, so you don’t have to export data every evening manually.
- Variant-level tracking: Size, colour, style and fit held separately. Knowing you have twelve shirts in stock is no use if eleven of them are an XS.
- Loyalty programme support: One customer record across the shop and the website, so points earned online can be spent at the till.
- Accounting integration: Sales and cost of goods sold posted to Xero or QuickBooks without any manual work.
How to Choose the Right EPOS System
Feature lists all look much the same when you line them up. These are the questions worth asking instead when looking for an EPoS system:
- What do you actually need it to do? Start with how you work on a regular basis. Taking payments, keeping track of stock, managing staff hours, pulling in online orders. Write down what you'll use from the start and ignore the rest. Paying for things you might grow into is the most common mistake people make here.
- What will it cost in total? The monthly fee is only part of it. Entry-level hardware in the UK usually starts somewhere around £300 to £500 ($500 - $1000 AUD), with mid-range setups running from £700 to £1,500 ($1300 - $3000 AUD), and that's before software, card fees and any charge per till. Ask for a full breakdown in writing before you sign anything.
- Will it work with what you already have? Check it connects properly to your accounting software, your online shop, any ERP integration you rely on and whatever you use for warehouse management. Weak integrations leave you with data in separate places and someone reconciling it by hand, which is the thing you're trying to get away from.
- How hard is it to leave? Ask how you'd get your product data out, who owns your customer records, whether the hardware only works with their system and what a move actually involves. Pick something you can grow into. Not something you'll need to replace in two years.
- What happens when something goes wrong? You're relying on this thing to trade. Find out whether support is their own team or outsourced, what hours it covers and what response times are actually written into your plan rather than just mentioned on the website.
When Your EPoS System Isn’t Enough
An EPoS tracks stock it can sell. Finished goods on the shop floor, moving out through the till. What it doesn't see is everything upstream of that. The raw materials waiting to be made into something, the purchase order that's three weeks late, what a product actually cost you once shipping and duty are in and how much you should be ordering next month.
Here are a few signs that show it’s time to re-evaluate your EPoS system:
- You don't know what raw materials you're holding, so planning a production run means going and having a look
- You can't trace a batch or serial number back to a supplier or forward to a customer
- You can't work out landed costs, so your margins are best guesses
- You only find out a supplier is late when there's an order you can't fill
- Reordering is based on what sold last month rather than what you think will sell next
- Someone spends part of every week getting your stock figures and your accounts to agree
The biggest potential drag here is lead times. Unleashed's Manufacturing Health Index tracks 1,578 SME manufacturers across the UK, Australia and New Zealand. Between April and June 2026, UK supplier lead times averaged 16 days, while stock on hand was down 33% on the year as firms ran leaner. If it takes a fortnight to replace something and you're holding less of it than you used to, finding out you're short at the till is too late.
That's where inventory software comes in. Unleashed does the part your EPoS doesn't. If you make things, it holds your bills of materials and works out what each build costs. It tracks batch and serial numbers, so you can follow a product back to a supplier or forward to a customer. It adds shipping and duty onto your purchase costs, so you know what your stock really cost you. It forecasts demand, so you're ordering before you run out. And it does all of that across as many warehouses as you've got.
None of this means getting rid of your till. Unleashed is built to connect to your EPoS rather than replace it. With Lightspeed Retail, for example, stock levels on the POS update as sales come in, and margins are worked out across every channel using the landed costs from Unleashed.
See how Unleashed gives small businesses complete inventory control. Start a free trial or book a chat with our team.
Frequently Asked Questions
What is an EPOS system used for?
Taking payments and recording what you sold. Everything else follows from that. Stock comes off automatically as items go out, sales reports build up in the background and the day's figures can go straight into your accounts. Most systems also handle staff logins and hours, and hold customer records for a loyalty scheme.
What is the difference between EPOS and POS?
POS means the point of sale, the place and moment a customer pays. In everyday use, people say POS when they mean a basic till or card terminal, and EPoS when they mean a system that also tracks stock, reports on sales and connects to other software. A basic POS records the total, while an EPoS records what was in the basket.
What are the disadvantages of EPOS systems?
Cost is the obvious one, and the monthly fee is rarely the whole of it once you add hardware, card fees and training. You're also relying on a connection, and an outage can disrupt business even with an offline mode. Staff need time to learn it. And if you manufacture things or hold stock in more than one place, you'll find it doesn't go deep enough on inventory. Bills of materials, batch traceability, landed costs and forecasting are generally outside what an EPoS does.
Does an EPOS system work without internet?
Usually, up to a point. Most cloud systems keep accepting payments and recording sales while you're offline, then sync everything once you're back online. What stops working is anything that needs live data, so stock levels across sites won't be current and reporting will lag. Ask a supplier exactly what still works offline before you buy, because it varies.
How much does an EPOS system cost?
It depends on the setup. In the UK, entry-level hardware at the time of writing typically starts at £300 to £500 ($500 - $1000 AUD), with mid-range setups running from £700 to £1,500 ($1300 - $3000 AUD).
On top of that, you'll pay a monthly subscription for the software, card processing fees on every transaction and sometimes a charge per till. Ask for a full breakdown in writing for clarity.
What's the difference between an EPOS system and inventory management software?
An EPoS deals with the sale. Inventory software deals with how the stock got there in the first place. What you bought, who you bought it from, what it cost you to get it into the warehouse and what you ought to be ordering next. Lots of businesses run both. The till looks after the shop floor, and the inventory system is where you go when you want to know what you've actually got. If you manufacture or import products, a till on its own typically won't give you enough inventory information.
