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Tax Identification Number in Singapore: Everything You Need to Know

A tax identification number (TIN) in Singapore serves as a unique identifier for individuals and entities within the country’s tax system. Whether you’re a business owner or an individual taxpayer, understanding the different types of TINs and their components is crucial for complying with tax regulations and simplifying your tax processes.

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Business owner taking a look at his Singapore Tax Identification Number in his office.

If you have ever had a chance to cross paths with a government agency in Singapore, it’s more than likely that you have come across the term “Tax Identification Number” and its friends “Tax Reference Number” and “Unique Entity Number”. But what do these numbers mean? Well, as it turns out, understanding what a tax identification number is and how it works is essential for tax compliance in Singapore for individuals and entities.

In this article, we will take a look at everything you need to know about the tax identification number. Whether you are a Singapore resident or citizen, a work pass holder, or a business owner, you have come to the right place!

What is a Singapore Tax Identification Number (TIN)?

A Singapore Tax Identification Number (TIN) is a unique nine to ten-digit number that the Inland Revenue Authority of Singapore (IRAS) issues to tax-paying individuals and entities as a way of tracking tax-related information.

This unique set of digits plays an immense role in the tax compliance of individuals and entities in the Lion City. Amongst the several ways it is applied, individuals require it for filing income tax returns, applying for loans, and conducting other tax-related activities, while entities like businesses rely on the TIN for tasks such as submitting corporate taxes, opening bank accounts, and addressing other corporate tax matters.

The Types of Tax Identification Number

The term “Tax Identification Number”, however, doesn’t portray the full picture of how this unique number works differently for individuals and for entities. In fact, individuals and entities are assigned different TIN types to fulfill their corresponding needs. Let’s take a close look at the two types.

Tax Identification Number (TIN) for Individuals

The type of TIN an individual is assigned varies depending on his or her residency status in Singapore.

Singapore Permanent Residents and Citizens

All Singapore permanent residents and citizens are assigned what is called a National Registration Identity Card (NRIC), a legal identity document issued at the age of 15 years or upon becoming a permanent resident. This card includes a picture of the holder, legal name, date of issue, and – amongst many other components – a NRIC number which stands for your TIN number, also commonly referred to as the Tax Reference Number (TRN).

Foreign Work Pass Holders Residing in Singapore

In contrast to permanent residents and citizens, foreign individuals who reside in Singapore and hold a work pass (such as Employment Pass or Work Holiday Pass) are assigned what is called a Foreign Identification Number (FIN). This FIN is also their Tax Reference Number.

Thus, a tax reference number and a foreign identification number both fall in the category of a TIN for individuals.

Uses of TIN for Individuals

Individuals including those in the categories above can use their TIN for purposes such as:

  • Filing Income Tax Returns: Individuals use their TIN to report their income, deductions, and claim any tax reliefs or rebates.
  • Government Subsidies and Financial Assistance: Individuals may need to provide their TIN when applying for government subsidies, financial assistance, or benefits such as GST vouchers.
  • Applying for loans and credit cards: Banks and financial institutions may require the TIN as a form of identification and verification of an applicant’s creditworthiness.
  • Employment Requirements: Employers use the TIN to report employees’ salaries to the relevant authorities.

Tax Identification Number (TIN) for Entities

If you are a business owner in Singapore, you have almost certainly heard of the term Unique Entity Number (UEN). The UEN is known as the tax identification number for most entities in Singapore, including but not limited to the following:

  • Businesses
  • Local Companies
  • Limited liability partnerships (LLPs)
  • Representative Offices
  • Healthcare Institutions
  • Trade Union
  • Societies

In most cases, the UEN is automatically assigned by the Accounting and Corporate Authority of Singapore (ACRA) after the incorporation of an entity such as a company in Singapore. The simplified assignment of the TIN to entities upon incorporation is one of the advantages of easiness of incorporation procedures in Singapore. This number will then correspond to the entity’s identification when dealing with tax-related matters.

Uses of TIN for Entities

  • Convenient Interaction with Government Agencies: The UEN streamlines interactions with various government agencies such as the Inland Revenue Authority of Singapore (IRAS). Entities can use their UEN for tasks such as filing corporate tax returns, applying for import and export permits, and engaging in other transactions with government bodies.
  • Identification and Verification: The UEN serves as a unique identifier for entities in Singapore, allowing for accurate identification in official documentation such as a certificate of incorporation or a business profile.
  • Facilitating Business Transactions: The UEN facilitates various business transactions, such as opening bank accounts, entering into contracts, and engaging in commercial activities with other entities. 

The Format of a Tax Identification Number

The structure of each tax identification number is based on many factors so that each individual or entity has an identifier unique to their circumstances, whether they are personal – like residency status – or professional – like owning a business. Let’s take a look at how the TINs are structured for both, individuals and entities.

Individual TIN Format

The two primary types of TINs for individuals discussed earlier – Tax Reference Number (TRN) and Foreign Identification Number (FIN) – both share the same structure, which is in the format #0000000@. There are three main components that make up an individual TIN:

  • #: A letter (“S”, “T”, “F”, “G”, or “M”) assigned depending on the residency or work pass status of the holder.
  • 0000000: A 7-digit number assigned depending on the individual’s year of birth amongst other factors.
  • @: A checksum alphabet.

If you want to learn more about the specifics of each part of the TIN for individuals, you may refer to this official documentation.

Entity TIN Format

Unlike the TINs for individuals, UENs have a structure that doesn’t depend on personal information since the number format is designed for entities like businesses. Instead, the UEN is a nine or ten-digit alphanumeric identifier that depends on factors such as entity type, year of issuance, and the agency issuing the UEN. The table below highlights the three primary UEN formats and the meaning behind each of the varying characters and digits.

Table portraying the different Tax Identification Number (TIN) formats in Singapore

*PQ can fall into one of several categories. If the issuance agency of your entity is ACRA, your entity type and its corresponding entity type indicator are portrayed in the following table:

Table portraying the different types of entities that can be registered with ACRA in Singapore and their corresponding entity-type indicators for the Tax Identification Number (TIN)

How to Obtain Your Tax Identification Number in Singapore

Aside from understanding the different tax identification numbers and how they are structured, it is equally important to know how to obtain these identifiers as an individual and as an entity. Let’s dive into the procedures for both.

Individual TIN Procedures

Singapore Permanent Residents and Citizens

Permanent residents and citizens of Singapore are automatically assigned a tax identification number upon reaching 15 years of age or after becoming a resident. Thus, there is no application to obtain your TIN, which you can find labeled as “Identity Card No.” on the front side of your National Registration Identity Card (NRIC).

Foreign Work Pass Holders Residing in Singapore

Similarly to the two residency status categories highlighted above, foreigners holding a work pass do not have to complete an application to be assigned their TIN number. Instead, you can find your TIN labeled as “FIN” on your Work Pass or Immigration Pass issued by the Ministry of Manpower (MOM) or the Immigration and Checkpoints Authority (ICA).

Important Note: Although there is no direct application for a tax identification number in the case of individuals, you must have completed an application for either NRIC or a Work Pass (depending on your residency status) in order to receive your corresponding TIN.

Entity (Business) TIN Procedures

The process for a business to obtain a TIN number – or more specifically a UEN – is not very different from that for individuals. Although a business does not have to apply directly for a UEN, it must be registered with ACRA. Once your business has been incorporated, ACRA will issue a certificate of incorporation that contains your UEN – which is often referred to as a “registration number”. The UEN of your business is included in all official ACRA documentation corresponding to your business.

To learn more about the incorporation process in Singapore, refer to our ultimate guide to registering a company in Singapore.

4 Tips to Properly Handle Your Tax Identification Number

Share your TIN Carefully

Exercise caution when disclosing your TIN by only sharing it with authorized individuals or entities, such as the Inland Revenue Authority of Singapore (IRAS) or certified tax professionals. Be wary of potential scams or phishing attempts where fraudsters may try to obtain your TIN for malicious purposes. 

Check Your Tax Records Frequently

Stay on top of your tax records to ensure accuracy and identify any discrepancies promptly. Regularly review your tax filings, such as individual income tax returns or GST returns, to verify that the information is correct. Keep track of any tax deductions, exemptions, or credits to ensure they are accurately reflected in your records. 

Report Unauthorized Activity Quickly

Immediately notify the IRAS if you notice any errors, inconsistencies, or unauthorized activity related to your TIN. Make sure to follow any instructions provided by the IRAS to mitigate the impact of the misuse and protect your tax-related information.

Be Informed About Tax Laws and Regulations

Regularly visit the IRAS website to stay informed about any changes in tax laws, reporting requirements, or compliance obligations that may affect you as an individual or your business.

Frequently Asked Questions

Can I have multiple Tax Identification Numbers (TINs) in Singapore?

No, you cannot have multiple TINs in Singapore since individuals and businesses are only assigned one TIN. If you are the owner of multiple businesses, however, each business will have a unique TIN.

Can I use my Tax Identification Number (TIN) from another country in Singapore?

No, Singapore requires individuals and businesses to obtain a Singaporean TIN for taxation purposes within the country. Thus, foreign TINs are not recognized for tax purposes in Singapore.

Do I need a Tax Identification Number (TIN) to work in Singapore?

Yes, individuals working in Singapore, including permanent residents, citizens, and foreign work pass holders, are required to have a TIN. As described earlier, TIN will be issued in the form of FIN to foreign employees upon approval of their work pass application to Singapore. Employers will need this number to report their employees' income to the tax authorities.

How long is the validity of a Tax Identification Number (TIN) in Singapore?

A TIN obtained in Singapore has no expiration date and remains valid as long as the individual or business has ongoing tax obligations or engagements in the country.

What if I do not qualify for TRN, FIN, or UEN?

If you as an individual do not qualify for a Tax Reference Number (TRN) or Foreign Identification Number (FIN) or your entity does not qualify for a UEN, the Inland Revenue Authority of Singapore (IRAS) will respectively issue you or your entity one of the following: Tax Reference Number assigned by IRAS (ASGD) Income Tax Reference Number (ITR)

Can I apply for a TIN if I am a foreigner residing in Singapore with no government-issued ID (such as a Work Pass)?

Yes, if you are a foreigner residing in Singapore with no government-issued ID, you may apply for what is called a Singpass Foreign User Account (SFA) in order to receive your TIN. You can follow this official IRAS guide to get started.

What if I lose my Tax Identification Number (TIN)?

If you are a Singapore permanent resident or citizen, and you have lost your National Registration Identity Card (NRIC) - which contains your TIN - you should apply for a replacement through the Immigration and Checkpoints Authority (ICA). If you are a foreign work pass holder residing in Singapore and you have lost your Work Pass or Immigration Pass you should apply for a replacement through the Ministry of Manpower (MOM) or through ICA. In the case of a business, you can refer to your official ACRA registration documents or purchase one such as a certificate of incorporation, which - like all ACRA-issued documents - contains the company’s TIN, or more specifically its UEN.

Conclusion

A tax identification number is another key to the puzzle of tax-related matters in Singapore. We hope this guide has helped you understand the ins and outs of this alphanumeric identifier and that you are now better prepared to navigate the Singaporean tax system. If you wish to continue learning about the topics that play a role in tax compliance for individuals as well as entities, take a look at more of our comprehensive guides to get started!

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