IRAS Tax Investigation Framework and Enforcement Approach

This technical note outlines IRAS investigation framework, enforcement powers, and case development lifecycle applied to tax evasion and fraud matters administered by the Inland Revenue Authority of Singapore (IRAS).

1. Mandate of the Investigation and Forensics Division

The Investigation and Forensics Division (IFD) handles tax evasion, fraud, and schemes involving fraudulent claims against taxes and government schemes administered by IRAS, including the Wage Credit Scheme, Job Support Scheme, and the former Productivity and Innovation Scheme. The division’s objective is to deter evasion and fraud through credible enforcement measures.

2. Offense Spectrum and Enforcement Intensity

Enforcement actions are calibrated according to the nature of the offense:

 

3. Emerging Schemes: Cash Extraction

Beyond traditional fraud cases (e.g., under-reported sales, over-claimed expenses), IFD has observed increasing instances of “cash extraction”—deliberate attempts to extract funds from the tax system through:

• Sale of shell companies to claim fictitious input tax;

• Fraudulent tourist refund schemes.

Such schemes involve entities established solely to make fraudulent claims and exhibit increasing sophistication.

Additional offenses within IFD’s purview include:

• Unauthorised collection of GST by non-registered persons;

• Fictitious stamp duty certificates;

• Failure to register for GST;

• Obstruction offenses.

 

4. Sources of Investigation Leads

Investigations are initiated through multiple channels:

• Internal Referrals: From other IRAS divisions, including the Corporate Tax Division.

• External Referrals: Suspicious Transaction Reporting Office (STRO) reports from financial institutions.

• Data Analytics: Analysis of information within the IRAS data warehouse.

• Treaty Partners: Information exchange with overseas tax authorities.

• Public Information: Review of publicly available data, such as business sale listings, against filed tax returns.

• Informants: Approximately 1,000 informant cases received annually. A gatekeeping process assesses allegations before case initiation. IRAS maintains a reward framework of 15 percent of tax recovered, capped at $100,000, subject to conditions.

 

5. Case Development Lifecycle

The investigation process follows a structured lifecycle:

1. Identification
   The Intelligence Team reviews information from all sources to identify cases with prima facie evidence of tax evasion, applying a risk-based approach to prioritise urgent matters.

2. Case Development
   An Investigation Officer (IO) is assigned to review and collate information, building the case before executing any visits or enforcement actions.

3. Settlement
   A panel determines the outcome:

   • Composition: Financial penalties in lieu of prosecution.

   • Prosecution: Reserved for egregious offenses. Approval is obtained internally and, where necessary, from the Attorney-General’s Chambers (AGC). Prosecution typically results in custodial sentences.

 

6. Investigation Powers

IRAS officers exercise statutory powers under relevant legislation, with full and free access to premises and documents. Failure to grant access may constitute obstruction.

Key Powers:

• Powers of Arrest: Officers may arrest individuals suspected of tax fraud.

• Production Orders: Orders may be issued to banks and other entities to produce records.

• Forced Entry: Powers granted in 2019 permit entry where necessary.

• Criminal Procedure Code (CPC) Powers: As a gazetted law enforcement agency, IRAS may exercise CPC powers, including:

  • Impounding passports of foreign persons under investigation;

  • Accessing computer services and servers;

  • Restricting access to email accounts.

 

7. Investigation Process and Duration

Investigations typically commence with an unannounced visit or raid. Key features include:

• Persons of Interest (POI): Visits may extend to directors or third parties.

• Locations of Interest (LOI): Visits may include company premises or residential addresses.

• Access and Search: IRAS officers present authority cards and serve identification letters. Persons found at the location may be searched for evidence relevant to the investigation.

• Interviews and Statements: Formal statements are documented, signed, and admissible as evidence in prosecution.

• Third-Party Records: Records may be called from suppliers and other third parties.

• No Five-Year Limit: Where serious fraud is established, assessments may be raised for years beyond the standard five-year record-keeping period.

Typical Duration: Investigations generally span 15 to 24 months, reflecting the complexity of gathering records, engaging with overseas entities, and conducting interviews.

 

8. Obstruction Offenses

Obstruction of tax investigations is treated as a distinct offense. In one case, a taxpayer who locked herself in a bedroom and disposed of documents out a window during an IRAS visit was convicted and fined $14,000 for obstruction, separate from underlying tax evasion charges.

 

9. Investigation Outcomes

 

10. Criminal Legislation and Enhanced Penalties

Money Laundering: Tax evasion offenses are designated as predicate offenses under the Corruption, Drug Trafficking and Other Serious Crimes (Confiscation of Benefits) Act (CDSA). Taxpayers may face separate charges for tax evasion and money laundering.

Criminal Registry: Serious tax offenses are recorded in the criminal registry.

Section 60(2C) – Missing Trader Fraud:

• First Tier (persons who devise or carry out the plan): Imprisonment not exceeding 10 years.

• Second Tier (persons who turn a blind eye or are wilfully ignorant): Imprisonment not exceeding 12 months.

 

11. Selected Prosecution Precedents

All cases are published on the IRAS website under “Courts and Crime.”

 

12. Reporting Tax Evasion

Informants may report using the template available on the IRAS website. Valuable information includes:

• Name and address of the individual or business;

• Details of the tax evasion (e.g., unreported income, over-claimed expenses, falsified records);

• Documentary evidence confirming the evasion.

 

13. Final Notes

Importance of Tax Compliance:

• Nation Building: Ensures equitable contribution and sustains public trust in the tax system.

• Business Considerations: Provides financial predictability, avoids penalties (which may reach three to four times the original tax liability), and mitigates reputational damage.

Practical Actions for Tax Accountants:

• Maintain robust record-keeping and internal controls.

• File tax returns on time.

• Utilise the Voluntary Disclosure Program (VDP) to reduce penalties where errors are discovered.

Evasion and fraud constitute criminal offenses. Penalties, reputational harm, and the stress of investigation significantly outweigh any perceived benefit from non-compliance.