The Mac, formerly the Clutha Employees Credit Union, is a credit union based in the NSW region of Macarthur which been operating since 1971.
It began to help miners gain access to financial products, but then grew to service the wider Macarthur District in the late 1970s. At that time, it took the name Macarthur Credit Union, and then later became The Mac.
Unlike banks, The Mac is a credit union, which means it is owned by members, not shareholders.