I investigate audit quality by examining 581 Incorporated Societies in New Zealand. Incorporated Societies in New Zealand are in a unique situation as they are currently allowed to choose to be audited or not and receive assurances at any level, including from an ‘auditor’ no qualification. I run multiple regressions testing various variables as proxies for size and complexity in order to help us find out what influences the audit quality choice made by the Incorporated Society. I find results that reveal contradictory relationships between the types of assurances provided, while also having results that support prior literature. Thus, I provide new insight into the determinants of assurance at different quality levels and why entities are voluntarily audited.