Merlin™ is a Metcash-approved point-of-sale and retail management system built specifically for Australian supermarkets and IGA stores. It handles high-volume grocery checkouts, deli and scale integration, thousands of SKUs, Metcash supplier rebates and multi-store reporting — with a fully redundant offline mode so the registers never stop.
Why supermarkets outgrow generic POS
General-purpose retail POS struggles with the realities of grocery: tens of thousands of SKUs, weighed and deli items, supplier rebates, tight margins, shrinkage, and constant ranging changes. Merlin was built for exactly this — it’s grocery software, not a generic till adapted after the fact.
What Merlin does for grocery
- Fast checkout lanes with scale, deli and weighed-item support
- Large-catalogue stock control, ordering and shrinkage management
- Automated Metcash supplier-rebate handling
- Promotions, multibuys and loyalty at the register
- Store and group reporting for owners and managers
- Self-checkout readiness and reliable, redundant uptime
Approved for IGA and Metcash stores
Merlin is approved to operate within the Metcash network, so ranging, data flows and supplier rebates work correctly for IGA and independent grocery stores. Learn more about Metcash-approved POS.
Running multiple stores
If you operate more than one site, Merlin’s head-office module centralises pricing, ranging, promotions and reporting across every store — while each register keeps working even offline.
Backed by managed IT, cyber and CCTV
Your POS is only as reliable as the network and security around it. GPK backs Merlin with managed IT, cyber security and CCTV & access control — one partner for the whole store.
Case study: Morgan’s IGA
Morgan’s IGA is a proudly independent supermarket group with five stores across Victoria, headquartered in Melton since 1970. With 61 POS lanes and 300+ staff, Merlin has become a cornerstone of Morgan’s retail operations — supporting pricing and inventory across multiple sites, seamless Metcash integration, and back-office reporting and compliance. Morgan’s also uses GPK’s managed services to maintain hardware across every store.
“Having worked with GPK for well over 20 years I can honestly say they are like an extension to our family business, so we have complete faith in their ability to problem solve on the spot to keep the wheels turning.”
Neal Morgan, Managing Director, Morgan’s IGA
Supermarket POS FAQ
What POS system do IGA stores use?
Many independent IGA and Metcash-supplied supermarkets run Merlin, a Metcash-approved POS built for Australian grocery, with integrated supplier rebates and multi-store head-office control.
Can Merlin handle deli scales and weighed items?
Yes. Merlin supports scale integration, weighed and deli items, and the fast lane flow supermarkets need.
Does Merlin manage Metcash rebates automatically?
Yes. Supplier-rebate handling is built in, so rebates are captured correctly without manual reconciliation.