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An insider Guide to 5 Common Mistakes to Avoid when Filing Tax and GST Return

By Former IRAS Senior Tax Officer, Mr Andre Lim

Although GST rules have been clearly laid out in Singapore for more than 20 years, many GST-Registered businesses are still making costly mistakes in their GST submissions.

Did you know that the Inland Revenue Authority of Singapore (IRAS) has collected over S$184 million in taxes and penalties as a result of GST audits and investigations? GST errors left undetected and unaddressed often accumulate and translate into significant financial exposure and disastrous consequences to the reputation of you or your client’s organization.


Avoid costly errors & minimize exposure to painful penalties when filing your Tax and GST

Therefore there is a need for business and corporate accounting firms to equip its staff with a complete understanding of GST rules and regulations to avoid crucial GST errors, manage risks and improve compliance. This in turns reduce time and resources needed to rectify errors and penalties for filing incorrect GST returns.

Step-by-step guide from a former senior IRAS Tax Officer

A workshop specifically designed to equip participants with the latest skills and knowledge to effectively understand and apply GST requirement.  It discusses major GST risk areas and common errors, with notes specially designed for easy learning, to broaden and reinforce understanding of proper GST treatment, possess the knowledge and know-how to compute and file your GST returns accurately. Get exposed to real life examples to build up practical knowledge and analysis of GST obligations.


  • The concepts of the Goods & Services Tax (GST), its rules and regulations
  • Preparing proper documents in case of a GST Audit
  • Completing your GST F5 return correctly and accurately
  • Understanding how rules apply to transactions so as to mitigate the exposure to penalties
  • Knowing the common errors in GST and how to avoid it
  • Clarifying some of the GST issues you encounter in your daily work
  • Perform due diligence reviews
  • Maintaining accounting and other related records to ensure compliance with the GST rules and regulations


“The trainer is clear and concise. He also shared his wealth of experience to help us understand the subject better. Thank you for the awesome sharing!”

Ms Jasmine Loo – Mandom Corporation (S) Pte Ltd

“The instructor was humorous and injected real-life examples into his workshop, making the session both informative and entertaining.”

Ms Jade Chen – FTC Corporate & Tax Advisory Pte Ltd

“Information given is very comprehensive, complete and easy to comprehend. Very detailed and informative, particularly to those without accounting and finance background. This course is definitely highly recommended!”

Ms Susie Ong – Vopak Terminals Singapore Pte Ltd


Formerly an Inland Revenue Authority of Singapore (IRAS) Senior Tax Officer, Andre has gathered more than 6 years of valuable experience from IRAS that includes dealing with general and complex GST issues.
He has conducted over 100 GST workshops and seminars, training over 5,000 participants during his tenure with IRAS with many prestigious organisations that include Accounting & Corporate Regulatory (ACRA), Singapore National Employers’ Federation (SNEF), Singapore Business Federation (SBF), Singapore Manufacturers’ Federation (SMa) and Singapore Chinese Chamber Of Commerce & Industry (SCCCI).


Tax Expert: Mr Andre Lim

Former IRAS Senior Tax Officer