Tax Law Enforcement in Singapore – procedures, queries and limitation periods

The Singaporean government has a robust tax system with a focus on transparency, efficiency, and compliance. The Inland Revenue Authority of Singapore (IRAS) is the primary tax authority responsible for administering and enforcing tax laws.

Key Features of Singapore’s Tax Law Enforcement:

• Efficiency and Transparency: The IRAS is known for its efficient and transparent operations. They use advanced technology and data analytics to identify potential tax evasion and non-compliance.
• Strong Enforcement Powers: The IRAS has broad enforcement powers, including the authority to conduct audits, issue assessments, and impose penalties.
• Penalties and Sanctions: Non-compliance with tax laws can result in severe penalties, including fines, interest charges, and potential legal action.
• Tax Amnesty Programs: The IRAS occasionally offers tax amnesty programs to encourage voluntary disclosure of undeclared income or assets.
• International Cooperation: Singapore actively participates in international tax cooperation initiatives, such as the OECD’s Base Erosion and Profit Shifting (BEPS) project, to combat tax evasion and promote transparency.

Key Areas of Focus:

• Corporate Tax: The IRAS closely monitors corporate tax compliance, including the accuracy of tax returns, transfer pricing, and the proper application of tax incentives.
• Individual Income Tax: The IRAS ensures that individuals are reporting their income accurately and paying the correct amount of taxes.
• Goods and Services Tax (GST): The IRAS monitors GST compliance, including the proper collection, reporting, and remittance of GST.
• International Tax: The IRAS focuses on preventing tax evasion through international transactions and ensuring that foreign-source income is properly declared.

Enforcement

Verification of compliance with tax laws

How does the tax authority verify compliance with the tax laws? Does this vary for different taxpayers or taxes?

The tax authority adopts a risk-based approach to verify taxpayers’ compliance with the tax laws. It identifies main compliance risk areas and develops programmes to address these areas.

For individual taxpayers, the tax authority focuses its compliance efforts on self-employed individuals in the following risk areas:

• timely filing of income tax returns;
• under-reporting or omitting to report employees’ income in the employers’ filing of their employees’ income information;
• under-reporting of revenue and wrongful claims of purchases or expenses by cash-based industries;
• arrangements that constitute tax avoidance; and
• reconciliation of income declaration with assets purchased.

For corporate taxpayers, the tax authority conducts both risk-based and random audits across all industries by utilizing advanced data analytics to profile companies according to their compliance risks. Different industries are also routinely selected for audit, which allows the tax authority to better understand the respective industries and take suitable compliance initiatives, where required.

For businesses that are registered for goods and services tax, the tax authority is currently auditing and investigating businesses involved in Missing Trader Fraud arrangements, sale of non-residential property, and under-declaration of supplies and output tax.

Tax return review procedure and limitation periods

What is the typical procedure for the tax authority to review a tax return and how long does the review last? What limitation periods apply?

Individual taxpayers

Individual taxpayers usually file their tax returns from March to mid-April of each year. The tax authority will process the tax returns in batches from April to September. Most individual taxpayers will start receiving their Notice of Assessment after the end of April.

Corporate taxpayers

Where a corporate taxpayer’s tax matter is straightforward, the tax authority generally does not perform a detailed review of the tax return. The declarations in the return will be accepted with minimal adjustments. The assessment is considered completed when the tax authority issues a Notice of Assessment to the corporate taxpayer usually by May of the following year.

Nonetheless, a taxpayer with straightforward tax matters may still be selected for a compliance review, in which case, the taxpayer may receive a query letter from the tax authority by September of the following year (eg, September 2025 for the tax filing for the year of assessment 2024). The compliance review will usually be completed by end of March of the following year (eg, March 2026 for the tax filing for the year of assessment 2024). In the event of any adjustment, an amended or additional Notice of Assessment will be issued to the taxpayer.

Where a corporate taxpayer’s tax matter is complex, the tax authority will perform a more in-depth review of their tax returns. Pending this review, the corporate taxpayer will receive a Notice of Estimated Assessment by end February of the following year (eg, February 2025 for the tax filing for the year of assessment 2024). The corporate taxpayer may receive a query letter from the tax authority by end of November of the following year (eg, November 2026 for the tax filing for the year of assessment 2024). The corporate taxpayer’s assessment will be completed progressively as and when the tax issues raised by the tax authority are resolved, which will generally be by end of March of the following year (eg, March 2026 for the tax filing for the year of assessment 2024).

Limitation period

The limitation period is four years, except in cases of fraud where no limitation period applies.

Tax authority requests for information

What types of information may the tax authority request from taxpayers? Can the tax authority interview the taxpayer or the taxpayer’s employees? If so, are there any restrictions?

The tax authority has extensive powers to seek information from taxpayers, including bank accounts, financial information, contracts, and any code or technology which has the capability of unscrambling encrypted data contained in computers into readable and comprehensive format. The tax authority also has the right to access, inspect, or possess any documents, computers, computer programs and computer software.

In addition, the tax authority also has the power to require any person, including the taxpayer, his or her employees and (or) any other persons who may have any relevant information (such as suppliers, customers, contractors, agents, etc) to attend personally before the tax authority to provide information concerning the taxpayer’s income, assets or liabilities, or information that is relevant for the investigation or prosecution. The interviewee cannot disclose any information where the person is under any statutory obligation (subject to certain exceptions) to observe secrecy, or any information subject to legal privilege.

Taxpayer failure to provide information

What actions may the tax authority take if the taxpayer does not provide the required information?

In the absence of a reasonable excuse, a person who does not provide the information requested by the tax authority will be guilty of an offence. That person will be liable to a fine of up to SS$10,000, or imprisonment of up to 12 months, or both, and in the case of a continuing offence, to a further fine not exceeding SS$100 for every day or part of a day during which the offence continues after conviction.

Collecting overdue payments

How may the tax authority collect overdue tax payments following a tax review?

The actions that the tax authority may take to collect overdue tax payments include:

• appointing agents (eg, banks and lawyers) to pay the overdue tax from any moneys held by, or due by, the agent to the taxpayer;
• issuing a travel restriction order against any person who is about or likely to leave Singapore without paying all the tax assessed on that person; and
• suing for any overdue tax payments.

Penalties – scope of application

In what circumstances may the tax authority impose penalties?

The tax authority may impose penalties in circumstances including non-payment of tax, failure to submit an income tax return, and making an incorrect return by omitting or understating any income without reasonable excuse. The tax authority may impose surcharges for tax avoidance cases or for cases relating to non-arms length transfer pricing.

Criminal consequences

Can criminal consequences arise as a result of tax non-compliance? Are these different for different types of taxpayers?

Criminal consequences can arise as a result of tax non-compliance.

For income tax purposes, such situations include:

• failing to notify the tax authority of taxes withheld from payment to a non-tax resident person;
• failing to comply with the tax authority’s notice to furnish information like banking accounts, and provide access to documents and computers; and
• making an incorrect return by omitting or understating any income with wilful intent to evade taxes or assist a person to evade taxes.

For stamp duties purposes, such situations include:

• executing any instrument in which all the facts and circumstances are not fully and truly set out to evade the payment of duty; and
• falsifying any part of a stamp certificate.

For goods and services tax purposes, such situations include:

• failing to keep records (eg, business records, invoices issued, import documentation, etc);
• without reasonable excuse or through negligence, making an incorrect return by omitting or understating any output tax or overstating any input tax; and
• making an incorrect return by omitting or understating any output tax or overstating any input tax with wilful intent to evade taxes.

Enforcement record

What is the recent enforcement record of the authorities?

There is no public information on the enforcement record of the tax authority.

Overall, Singapore’s tax law enforcement is known for its effectiveness and focus on compliance. The IRAS utilizes a combination of technology, data analytics, and enforcement powers to ensure that taxpayers meet their obligations.