There are over three million Point of Sale (POS) systems in the UK, processing over 62.5 billion transactions.per year.

But what exactly is a POS or EPOS, and how does it work?

I aim to explain this in detail, explaining its components, features, and how these systems can align with your business objectives.

By the end of this article, you’ll have a better understanding of how a POS system can positively impact your operations and ultimately lead to increased revenue and customer satisfaction.

» MORE Read our full article on The Best Card Machines for Small Business

What Is a POS System and How Does it Work?

What is a POS System?

A Point of Sale (POS) system is a hardware and software setup that facilitates retail transactions by managing payments and inventory.

Traditional POS systems were primarily used in brick-and-mortar stores and consisted of a cash register and basic accounting software. Modern POS systems, on the other hand, are multi-functional. They are fully digital, leveraging sophisticated software to handle inventory management, customer relationship management and sales analytics, in addition to facilitating payments.

Unlike traditional systems, modern POS systems can operate on a variety of hardware platforms, from specialized POS terminals to third-party smartphones. Cloud-based options have further democratized the marketplace, making it simpler for small businesses to adopt powerful, data-driven systems.

The scalability and adaptability of contemporary POS systems make them invaluable assets for businesses across sectors. From single-outlet stores to sprawling retail chains and from e-commerce to service providers, a tailored POS system can significantly enhance operational efficiency and customer satisfaction.

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How Does a POS System Function in a Small Business?

At its core, a POS system processes customer payments and tracks inventory. However, modern POS systems offer a wide range of additional features, such as customer relationship management (CRM), employee management, and sales analytics.

Here’s what they can do:

Payment Processing

POS systems accept various payment forms, including cash, debit and credit cards, and digital wallets. The system processes the payment and updates the customer’s account accordingly.

Inventory Management

POS systems track inventory levels in real time. When a customer purchases an item, the system updates the inventory level accordingly. This helps businesses to ensure that they have enough stock on hand and to avoid overselling.

Customer Relationship Management

POS systems can collect customer data, such as contact information, purchase history, and preferences. This data can be used to create targeted marketing campaigns and loyalty programs.

Employee Management

POS systems can track employee hours, sales performance, and task assignments. This data can be used to improve employee productivity and customer service.

Sales Analytics

POS systems can generate detailed sales reports that provide insights into customer behavior, product performance, and business trends. This data can be used to make informed business decisions.

Cross-Channel Consistency

POS systems can synchronize data across multiple channels, such as physical stores, online shops, and mobile apps. This ensures that customers have a seamless experience regardless of how they choose to shop.

POS system

Types of Hardware and Software Typically Included in a POS System

At its most basic level, a Square Reader (costing £19) and the free Square App on your phone will give you a fair bit of POS functionality. But for bigger systems, there’ll be some investment involved in getting set up with the right tools.

» MORE Read our full Square Review: Payments, POS & Card Reader

Here are the typical components:

Hardware Components

  • Register or Terminal: This is the computerized replacement for a cash register and serves as the central hub where sales are processed.
  • Credit Card Reader: A crucial device for authorizing and processing card payments, whether that’s through magnetic stripe cards, chip cards, or contactless methods.
  • Barcode Scanner: Speeds up the checkout process by quickly providing information about the product, such as price and stock level.
  • Cash Drawer: A secure compartment for storing cash received from transactions. Modern cash drawers are electronically connected to the POS system for improved cash management.
  • Receipt Printer: Provides physical proof of transaction for customers, and can also serve in record-keeping and bookkeeping processes.

Software Components

  • Payment Processing Software: The heart of any POS system, it enables the processing of multiple types of payments securely and efficiently.
  • Inventory Management Software: This feature automates the tedious task of stock-keeping, making it easier to manage, reorder, and audit inventory.
  • Customer Relationship Management (CRM) Software: Captures customer data and interaction history, facilitating targeted marketing and service customization.
  • Employee Management Software: Helps in time-tracking and productivity assessment, often providing functionality for task allocation and role-based access control.
  • Analytics and Reporting Software: Collects and analyses sales and other operational data to provide actionable insights for informed decision-making.

Calculating the ROI of a POS System 

If you’re considering a POS, working out the potential costs will be half the battle. You need to find the balance between a set-up which makes your life easier and speeds up growth with one that isn’t unduly complicated or expensive for your current requirements.

At the entry level, a Square Reader can be acquired for as little as £19, with no contractual obligations. This simple device, linking with your phone, provides a basic but valuable introduction to POS functionalities and will get any business taking payments quickly.

However, for those operating in retail or hospitality sectors, a more comprehensive setup is generally advisable. For these businesses, hardware expenses typically range between £200 and £1,000 per terminal.

Software licenses can add an additional £100 to £300 annually, while installation and training fees may cost another £100 to £300 if they are not included in the initial package.

These are substantial costs but must be considered an investment in the efficiency and data capabilities that modern POS systems bring.

Operating Your Business Using a POS System

Operating a business with a POS system is not merely about completing transactions; it’s about integrating various aspects of your operation into a unified, streamlined process. A sophisticated POS system goes beyond the cash register functionality, serving as the nerve centre of your business.

To begin with, inventory management becomes considerably more efficient. Real-time tracking ensures you’re neither overstocked nor understocked, optimising your capital usage. Furthermore, automated reorder points and reports save administrative time that can be better used elsewhere.

Your POS system can also harmonise the sales and marketing functions. Through targeted promotions and discounts, which can be programmed directly into the system, you ensure that marketing efforts are instantly implementable at the point of sale. The system can also handle multi-channel sales, thereby unifying your in-store and online offerings.

Then there’s staff management, which is often an overlooked functionality. Modern POS systems offer time-tracking and role-based permissions. This not only improves accountability but also simplifies the payroll process.

Lastly, the system can offer actionable analytics, from sales reports to customer behaviour, which can guide strategic planning. This data-driven approach can be a game-changer in achieving competitive advantage.

Customer Engagement through POS Systems

In the realm of customer relations, a point-of-sale (POS) system can act as more than just a transactional interface; it can serve as a potent tool for enhancing customer engagement. By centralising customer data, the system can offer critical insights into consumer behaviour, preferences, and spending patterns.

For instance, loyalty programmes can be effortlessly integrated into your POS system. These programmes encourage repeat business by offering rewards or discounts, tailored based on customer data gathered by the system. This enables a more personalised shopping experience, which in turn fosters customer loyalty.

Similarly, gift cards and vouchers can be easily managed, giving customers a convenient gifting option while driving incremental sales. With your POS system, these can be issued, redeemed, and managed seamlessly, reducing administrative hassle.

Email marketing is another area where a POS system can add value. Most systems have the capability to capture customer email addresses at the point of sale. This database can then be used for sending targeted promotions or newsletters, which are more likely to be well-received when they are based on actual purchase history.

A noteworthy benefit of using a POS system for customer engagement is the speed and efficiency it brings to customer service. Returns, exchanges, and queries can be handled swiftly, thanks to the easy access to transaction histories and customer information. This convenience is not only beneficial for the customer but also reduces the time staff spend on administrative tasks.

Employee Management via POS Systems

Managing a team effectively is paramount for any business aiming for longevity and success. In this context, a POS system serves as a multi-faceted tool that can simplify workforce management considerably. From task delegation to performance monitoring, modern POS systems offer an array of features that facilitate efficient staff administration.

Clocking in and out of shifts can be managed directly through the POS interface. By integrating this functionality into the system, businesses can maintain accurate records of employee hours, thereby streamlining the payroll process. Importantly, this feature minimises the opportunity for manual errors, which can lead to payroll discrepancies and subsequent disputes.

Furthermore, a POS system can act as a hub for task management. Assignments related to inventory restocking, customer service, or any other operational aspect can be distributed through the system. This digital delegation method enhances accountability, as tasks can be monitored for completion status, thereby creating a data-driven approach to employee performance evaluation.

POS System Security and Compliance

Ensuring the security of your POS system is crucial for protecting your business and customer data. A high-quality POS system will come with built-in security features, such as encryption for transactional data, to keep unauthorized parties from accessing sensitive information. Keeping your software up to date is key to defending against emerging cyber threats.

Your POS system should also help you with compliance. For example, it should assist with tax calculations and reporting to make sure your business aligns with relevant laws. Some systems offer audit trails, providing a record of all activities, useful for internal reviews and regulatory requirements.

Here are some key factors to consider when choosing a POS system:

  • Feature set: Make a list of the features that are most important to your business. This may include things like inventory tracking, customer relationship management (CRM), staff management, and reporting.
  • Integration: Choose a POS system that can integrate with your existing business software, such as your accounting system and e-commerce platform. This will help to streamline your operations and reduce manual data entry.
  • Scalability: Choose a POS system that can scale with your business. As your business grows, you need a system that can grow with it.
  • Price: POS systems can range in price from a few hundred dollars to several thousand dollars. Choose a system that fits your budget and needs.