Tax Audit and Investigation in Singapore
Reviewed by the Commoner Law Editorial Team. Sourced from Singapore Acts of Parliament, subsidiary legislation, and official government guidance. Written in plain language for general understanding — this is educational content, not legal advice. Our editorial standards
What is this right?
IRAS conducts audits and investigations to ensure tax compliance:
- Desk audit: IRAS may request supporting documents for specific items on your tax return — this is the most common type.
- Field audit: IRAS officers visit your premises to examine records. You will receive advance notice.
- Investigation: For suspected tax evasion — IRAS has powers to search premises, seize documents, and access bank records.
- Penalties for evasion: Fine of up to 400% of the tax undercharged, plus imprisonment of up to 5 years (s96 Income Tax Act).
- Voluntary disclosure: IRAS encourages voluntary disclosure of past errors — penalties are typically reduced for voluntary disclosure (usually 200% vs 400%).
When does it apply?
- IRAS has contacted you regarding a tax audit or investigation.
- You have discovered an error in a past tax return and want to make a voluntary disclosure.
What to Do If IRAS Has Selected You for a Tax Audit or Investigation in Singapore
- Cooperate with IRAS — provide requested documents within the stated deadline.
- If you discover an error, make a voluntary disclosure immediately — this significantly reduces penalties.
- Engage a tax professional if the audit is complex or involves significant amounts.
- You have the right to know which items are being audited and to provide explanations.
What should you NOT do?
- Don't destroy or falsify records — this is a criminal offence under the Income Tax Act and the Penal Code.
- Don't ignore IRAS correspondence — failure to comply can result in estimated assessments and prosecution.
- Don't try to hide offshore income — Singapore participates in the Common Reporting Standard (CRS) and exchanges information with tax authorities worldwide.
Common Questions
What penalties do I face for tax evasion in Singapore?
Tax evasion carries a fine of up to 400% of the tax undercharged, plus imprisonment of up to 5 years under s96 of the Income Tax Act. Voluntary disclosure of past errors typically reduces penalties to around 200%. Destroying or falsifying records is a separate criminal offence under the Income Tax Act and the Penal Code.
What kinds of audits does IRAS conduct in Singapore?
IRAS conducts desk audits (the most common — they request supporting documents for specific items on your return), field audits (officers visit your premises with advance notice), and investigations (for suspected evasion — IRAS can search premises, seize documents, and access bank records).
What should I do if IRAS is auditing my Singapore tax return?
Cooperate — provide requested documents within the stated deadline. If you discover an error, make a voluntary disclosure immediately to significantly reduce penalties. Engage a tax professional for complex or high-value audits. You have the right to know which items are being audited and to provide explanations. Singapore participates in the Common Reporting Standard, so do not try to hide offshore income.
When does it apply — tax audit and investigation?
IRAS has contacted you regarding a tax audit or investigation.You have discovered an error in a past tax return and want to make a voluntary disclosure.
What should I do if I have received a letter from IRAS notifying me of a tax audit or investigation in Singapore?
Cooperate with IRAS — provide requested documents within the stated deadline.If you discover an error, make a voluntary disclosure immediately — this significantly reduces penalties.Engage a tax professional if the audit is complex or involves significant amounts.You have the right to know which items are being audited and to provide explanations.
What should you NOT do — tax audit and investigation?
Don't destroy or falsify records — this is a criminal offence under the Income Tax Act and the Penal Code.Don't ignore IRAS correspondence — failure to comply can result in estimated assessments and prosecution.Don't try to hide offshore income — Singapore participates in the Common Reporting Standard (CRS) and exchanges information with tax authorities worldwide.