When it comes to business compliance in Singapore, one area that continues to draw attention is the GTO audit . For many companies, understanding what this audit involves—and more importantly, what documents are required—can make the difference between smooth compliance and unnecessary stress. At WZWU & Partners, we often see businesses worried not because the process is overly complicated, but because they are unclear about what needs to be prepared in advance. This article will break down the essential documents required for a GTO audit in Singapore in 2025, explain why they matter, and offer some practical tips to stay ahead of the process. What Is a GTO Audit? Before we dive into documents, it’s important to quickly revisit what a GTO audit actually is. GTO stands for “Gross Turnover,” and this audit is primarily aimed at verifying a business’s revenue records to ensure they align with statutory and regulatory requirements. The purpose of a GTO audit in Singapore is straig...