Inland Revenue Authority of Singapore (IRAS)

Q: What are the main types of taxes that IRAS oversees for businesses?

&lt;p&gt;&lt;span style=&quot;color: rgb(27, 28, 29)&quot;&gt;IRAS oversees Corporate Income Tax, Goods and Services Tax (GST), Property Tax, and Stamp Duty. They also manage withholding tax for payments made to non-residents.&lt;/span&gt;&lt;/p&gt;

Q: What is the myTax Portal?

&lt;p&gt;&lt;span style=&quot;color: rgb(27, 28, 29)&quot;&gt;The &lt;/span&gt;&lt;a target=&quot;_blank&quot; rel=&quot;&quot; href=&quot;https://mytax.iras.gov.sg/&quot;&gt;&lt;span style=&quot;color: rgb(27, 28, 29)&quot;&gt;myTax Portal&lt;/span&gt;&lt;/a&gt;&lt;span style=&quot;color: rgb(27, 28, 29)&quot;&gt; is IRAS&#x27;s secure online platform where businesses and individuals can manage all their tax matters, from filing returns to making payments.&lt;/span&gt;&lt;/p&gt;

Q: What happens if I file my taxes late with IRAS?

&lt;p&gt;&lt;span style=&quot;color: rgb(27, 28, 29)&quot;&gt;Late or non-filing of taxes will result in penalties from IRAS. These penalties can include fines and, for serious offenses, potential legal action.&lt;/span&gt;&lt;/p&gt;

Last Updated 25 Jul 2025

The Inland Revenue Authority of Singapore (IRAS) is the main government agency responsible for the administration and collection of all major taxes in Singapore. This includes corporate tax, Goods and Services Tax (GST), personal income tax, and property tax. Beyond collection, IRAS also represents the Singapore government in negotiating tax treaties with other countries and plays a key role in advising on the nation's tax policies.

Why is IRAS Important?

Every business operating in Singapore will interact with IRAS. It is the authority that governs all tax-related matters. Ensuring full compliance with IRAS regulations, filing requirements, and payment deadlines is absolutely crucial for any business to operate legally, avoid significant penalties, and maintain a good corporate standing.

Examples of IRAS

A growing e-commerce business files its quarterly GST return with IRAS through the myTax Portal.
A profitable company calculates and pays its corporate income tax to IRAS after receiving its Notice of Assessment (NOA).
A new employer registers for a tax account with IRAS to manage payroll tax obligations for its employees.

Frequently Asked Questions

What are the main types of taxes that IRAS oversees for businesses?

IRAS oversees Corporate Income Tax, Goods and Services Tax (GST), Property Tax, and Stamp Duty. They also manage withholding tax for payments made to non-residents.

What is the myTax Portal?

The myTax Portal is IRAS's secure online platform where businesses and individuals can manage all their tax matters, from filing returns to making payments.

What happens if I file my taxes late with IRAS?

Late or non-filing of taxes will result in penalties from IRAS. These penalties can include fines and, for serious offenses, potential legal action.