Skip to main content Skip to main navigation
Skip to access and inclusion page Skip to search input

What is a POS machine and how can I compare POS terminals?

Image of a shop owner using a POS machine that integrates with her EFTPOS machine.

5-minute read

Having evolved from the humble cash register or ‘till’, POS machines – also known as POS systems and POS terminals – are powerful sales, stock control and accounting tools. Cornerstones to many retail and hospitality businesses, POS machines can save valuable time in all these important areas, while reducing the risks posed by human error.

Key take-outs
  • POS stands for ‘point of sale’, describing where purchases are paid for
  • A POS machine is a device that adds up purchases and facilitates payment
  • POS machines are powerful sales, accounting and stock control tools
  • POS machines integrate with EFTPOS machines, which take card and device payments
  • When comparing POS machines, consider your sector (e.g., café or retail), the features you need, your sales volume, and which complementary hardware and software they integrate with
  • Card readers are generally known as EFTPOS terminals (or EFTPOS machines).

What is POS exactly? 

POS simply stands for Point Of Sale, which refers to the place at which transactions take place. 


Your POS machine (POS system or POS terminal) is the device that’s used to add up and take payments for what’s being purchased. It can consist of:


  • the machine that does the adding and holds the cash – which may or may not be used in conjunction with a standalone card reader (which processes the payments), OR
  • a machine/system/terminal that ‘talks to’ (integrates with) a card reader connected to it by cable or Wi-Fi (which streamlines the payment process). 


But there’s a lot more to a POS machine than all that competing terminology.


In a restaurant for example, your POS machine could incorporate a table ordering and kitchen briefing system, whilst being integrated with an EFTPOS terminal you can take to your tables. So, the one system manages everything from taking the order to taking the payment.


In a retail environment on the other hand, key components of the POS machine can be the barcode scanner, the receipt printer, and inventory management.


Depending on which POS machine you purchase, you may also be able to pinpoint which dishes (or products) are the most popular, which may not be worth keeping on the menu (or your shelves), and when the busiest times of trade are. It may also incorporate stock control and ordering software. And that’s just the start.


How could a POS machine help my business?

A fully integrated POS system (a POS machine integrated with an EFTPOS terminal/machine card/device reader) is akin to a great business partner. It could help inform key business decisions through reporting insights, while helping streamline your day-to-day processes. Some of the ways that retail and hospitality businesses could benefit from having an integrated POS system are:


  • Helps save time across key operational areas of the business
  • Helps reduce the likelihood of mistakes through human error 
  • Can improve the customer experience and adds a sense of professionalism to small businesses
  • Can help small businesses scale with multi-site capabilities
  • Can collect data about customer behaviour that can be used in loyalty programs
  • Identifies popular items, and busy/slow trading periods
  • Can provide valuable sales and inventory management insights.

Improve your customers’ experience

The latest POS technology strives to get customers through the payment phase as fast and efficiently as possible, which is good for your customers and could benefit your ‘cost of sale’. Managing vouchers and other promotions can be quicker, and POS machines are also useful for managing loyalty programs.


A change of mind at the till could be simpler to manage too, with the POS machine deducting products as easily as adding them - and managing refunds.

Save time and increase productivity

A good POS machine will reduce the time it takes to process each sale, but it will also reap time rewards in sales reporting, inventory management and accounting. Rather than transferring sales data manually into your small business accounting software (such as Xero and MYOB), your system can do it directly through the right integrated software.


The best POS machines are also intuitive to use, so you’ll spend less time training staff – particularly casuals – and more on your business.

Fewer mistakes, better business operations

Manually keying in amounts is a practice that can carry the risk of human error. Barcode readers and easy-to-use touchscreen interfaces could help avoid this risk – and the benefits can flow through to back-office systems where manual data entering could be avoided too.


Adding up a bill through your POS machine but then keying/tapping the amount in to your EFTPOS terminal/machine is a practice that’s also subject to human error. Having an EFTPOS terminal that integrates with your POS machine neatly helps avoid that risk by transferring the payment amount from your POS directly to the EFTPOS card reader1.

Valuable sales reports and insights

Most basic POS machines will provide you with a detailed report on your sales. More sophisticated POS machines can allow you to monitor and analyse the sales performance of different locations, departments and individual employees.


You may also be able to gather and utilise data on what’s selling against what’s not, relative profitability, average customer sales and the effects of promotions – all of which will provide you with valuable intelligence for business planning and managing your cash flow.

Enhanced stock management

With the right POS software in your POS machine you’ll know exactly where your stock levels sit based on sales. It may also allow you to initiate re-stock reminders, set up automatic ordering at predetermined levels, and facilitate stock transfers between locations.

Tangible customer data

Good customer relationship management (CRM) starts with knowledge, that your POS technology may be able to provide. Some popular POS machines help you build customer profiles based on purchase patterns, enabling you to target your marketing and promotions more effectively.


You may also be able to add promotional messages to your receipts, including those that cross-sell based on the purchase made.

How do I compare POS machines?

Every business is different, so will have different POS needs. Remember that a POS is not a standalone machine, but an interconnection of capabilities that together enable you to process customer-facing transactions efficiently – while supporting your business processes. 


To help find the best POS machine for your business, develop a shortlist by considering and comparing the products that have your ‘must have’ features. They could include:


  • Size, weight and ease of use
  • Offline mode. You’ll want to make sure that you can still operate in the event of a network outage
  • Real-time reporting and analytics
  • Multi-site management capabilities as your business grows
  • Ability to take orders and facilitate payment tableside or anywhere in store
  • Table management functionality (a must-have for restaurants)
  • Capacity to manage split bills, refunds, tips etc.
  • Integration with value-adding software (i.e. accounting, ecommerce, reservations, loyalty)
  • Advanced sales and ingredient-level inventory management features
  • Data storage in the cloud (rather than locally)
  • 24/7 customer support
  • Integrates with an EFTPOS terminal 
  • Mobile capabilities for businesses on the move (market stalls, food trucks etc.)
  • Ability to build and utilise customer profiles for loyalty
  • Low technological footprint - as compact a POS system as possible.


A possible starting point for this research is the list of popular POS systems that integrate with our Presto Smart EFTPOS terminals or check out EFTPOS machines that integrate with POS machines powered by Linkly software.1


You may also wish to consider an alternative to a POS machine. Westpac offers the EFTPOS Air app, a mobile payments solution with built-in point of sale features such as a product catalogue you can build and inventory tracking. When downloaded to a compatible phone or tablet, the EFTPOS Air app can take ‘tap to pay’ card and mobile wallet payments using just the device.


The right POS machine (POS system or POS terminal) could revolutionise your business in several ways – from improving customer service to automating stock management.  So, it pays to take some time researching the best point of sale machine for your specific needs.

A new, easier way to take payments

Get paid the easy way, with our EFTPOS app on your compatible phone. T&Cs, eligibility and fees apply.

Discover EFTPOS Air

Read more

8 questions when shopping for an EFTPOS machine

Looking for an EFTPOS machine? Make sure you do your research to get the most suitable one for your business.

How to accept payments when you're a mobile business

If your business takes place outside a store, you’ll need a way to accept payments on the go. Here's what you need to know.

How can I take payments in my business?

Accepting payments is crucial for your business. The quicker you're paid, the healthier your cash flow will be.

Things you should know

Applications for merchant services are subject to approval. Terms, conditions, fees and charges apply. Before making a decision, read the disclosure documents for your selected product or service, including the Product Disclosure Statement and Terms and Conditions for Westpac EFTPOS machines; and consider if the product is right for you.

1. The Point of Sale machines are supplied by POS providers, not Westpac. Westpac does not guarantee or endorse those products and any related services.  You can find out if your POS is compatible with Presto Smart.


The information in this article is general in nature and does not take your objectives, financial situation or needs into account.