What is a UEN (Unique Entity Number)? A detailed guide for businesses in Singapore
Singapore 
Updated on January 01 
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content
- 1. What is Singapore UEN code?
- 2. Why does a company need to register a UEN number in Singapore?
- 3. Procedure for registering UEN number in Singapore
- 4. How to look up the legal UEN code of a business in Singapore
- 5. Common mistakes when registering for a UEN number in Singapore
- 6. How does Global Links Asia support businesses to establish Singapore companies and register UEN codes accurately and legally?
- 7. Frequently asked questions when registering for a Singapore company UEN number
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“We have prepared all the documents, but the bank still refused to open an account in Singapore.” – this is a common situation for newly established businesses in Singapore. The reason is not because of missing documents, but because of not understanding the UEN (Unique Entity Number) code – a mandatory identifier for all organizations in Singapore.
In this article, GLA will help businesses understand: what is the Singapore UEN code, why it is important, and how to look up and use UEN effectively to help businesses operate smoothly right from the start.
1. What is Singapore UEN code?
As soon as the business completes the procedures Singapore company registration, this code will be automatically issued to the business and displayed immediately in Certificate of incorporation.
The Singapore UEN number is a 9-10 digit identification code for businesses established in Singapore, used to declare taxes, sign contracts, open bank accounts and carry out administrative procedures with the Singapore Government.
Businesses need to write the UEN code on most types of documents such as invoices, business contracts, labor contracts, etc.
UEN code in Singapore (Source: BizFile+)
1.1 Formats of UEN codes in Singapore
The UEN number has three main formats, each format is applied to different types of legal entities, including:
Subject | UEN format | Character explanation |
| Businesses registered with ACRA before 2009 | nnnnnnnnX (9 characters) | “n” = number. “X” = check character used to ensure code validity. Note: Only businesses established before 2009 have this code. Example: 12345678A |
Businesses registered with ACRA after 2009 | yyyynnnnnnX (10 characters) | “yyyy” = year of registration “nnnnn” = the system serial number assigned to the business in that year. “X” = check character. Example: 201912345A → company established in 2019. |
Other business entities (associations, charities, hospitals, etc.) registered after 2009 | TyyPQnnnnX (10 characters) | “T” = century (T08 = 2008, T20 = 2020, etc.). “yy” = last 2 digits of the registration year. “P” = type of organization (e.g. L = LLP, P = LP, R = Sole Prop, S = Society etc.). “Q” = letter that describes the type in detail. “nnnn” = system serial number. “X” = check character. Example: T19SS8765D → Society, established in 2019 |
In other words, for subsidiaries, technology startups, or international trading stores established in Singapore, UEN is the key to being legally recognized and operating legally in the business environment in this country.
1.2 Characteristics of UEN codes that Singaporean businesses need to know
Businesses need to clearly understand the nature of the UEN code to use it correctly in all legal transactions in Singapore.
- Is a unique code: Each enterprise or organization has only one UEN code and there are no duplicates.
- Required when working with government agencies: UEN is the official legal identifier, required for all procedures with government agencies and banks.
- Unchanged throughout the life of the company: Even if the company name, address or director changes.
- Guaranteed by Singapore law: is the code with the highest legal value to prove that the company exists and operates legally.
1.3 Which entity in Singapore issues the UEN number?
The UEN number is not self-registered by the business, but is automatically issued by the regulatory agencies in Singapore:
UEN Number Issuing Authority in Singapore | Granted objects |
Accounting and Corporate Regulatory Authority (ACRA) in Singapore |
Partnership.
For example, a Pte Ltd company registered with ACRA will automatically be assigned a UEN number upon incorporation. |
| Inland Revenue Authority of Singapore ("Inland Revenue Authority of Singapore")IRAS")) |
For example, a community sports association that is not registered with ACRA but needs to transact with a government agency will be issued a UEN by IRAS. |
Ministry of Education (MOE) |
For example, a public primary school will be granted a UEN by MOE to serve financial management, sign service contracts, and receive budget. |
Ministry of Health (MOH) |
For example, Singapore General Hospital (SGH) – a large public hospital under MOH, has a UEN to conduct financial transactions, manage and sign contracts for the provision of medical services. |
National Environment Agency (NEA) |
For example, a hawker center management unit is granted a UEN to manage finances and sign service contracts. |
2. Why does a company need to register a UEN number in Singapore?
Companies need to register for a UEN number to operate legally in Singapore, this UEN number helps simplify transactions with government agencies and acts as a unique identifier for the business:
- Register for your company to be recognition of legal activities in Singapore.
- Verification when applying for work permit (Work Pass/LOC) for employees.
- Open a bank account and make international transactions legally.
- Declare and pay taxes, refunds, and report to IRAS as required.
- Register business license and sign service contract, rent office, prove company legality.
- Enhance transparency and credibility with partners, customers, and investors through UEN lookup on the government system.
3. Procedure for registering UEN number in Singapore
The basic 3-step process that businesses need to follow to receive UEN quickly, accurately and legally.
Identify type of business appropriate to the scale of operations and business goals of the enterprise.
For example, a private company (Pte Ltd) is suitable for medium and large enterprises, a partnership (Partnership) or a sole proprietorship (Sole Proprietorship) is suitable for small scale.
The company name must be approved (reserve name) before official registration can be carried out.
Consult with GLA consultants to choose the type of business that suits your business orientation, capital scale and level of legal risk.
Preparing documents to establish a Singapore company includes:
- Business Information: Provide full name, type and industry of business.
- Name approved by ACRA.
- Head office address in Singapore.
- Personal information and nationality of the company director in Singapore.
- List of shareholders and capital contribution ratio.
- Charter capital and capital allocation among shareholders.
- The company charter regulates operations, powers and responsibilities.
GLA supports Individuals/Businesses in establishing a Singapore company in a complete package, from choosing the type of business and accompanying the Singapore company to operate sustainably.
After successfully registering a company in Singapore, the Singapore company will receive:
- UEN number automatically issued together with Singapore Certificate of Incorporation.
- UEN must be used in all transactions with Singapore government agencies.
- UEN must appear on invoices, contracts, reports, etc. and cannot be changed.
4. How to look up the legal UEN code of a business in Singapore
Businesses can verify legal UEN number of any organization in Singapore to ensure legitimacy before entering into contracts or financial transactions.
1. Visit ACRA's official BizFile+ search page.
2. Enter the name of the business information you want to look up:
- Enter the issued UEN code.
- Enter the name of the company to check.
3. The results will be displayed right below the search bar
The information displayed includes:
- Full legal name of the organization.
- UEN code.
- Type of legal entity (Pte Ltd, LLP, LP etc.).
- Date of establishment.
- Activity status (active, dissolved etc.).
Look up UEN code in Singapore (Source: BizFile+)
5. Common mistakes when registering for a UEN number in Singapore
1. Choosing the wrong type of business before applying for UEN
Many individuals rushed to register Sole proprietorship (private enterprises) because of quick procedures and low costs. However, when opening a bank account or cooperating with international partners, most require Private Limited Company.
Consequence: The business must dissolve and re-register from the beginning to get a new UEN, which is both time-consuming and affects reputation.
For example, an individual doing e-commerce business registers Sole proprietorship to sell online. When integrated Shopify Payments, the system refuses because it does not accept this type of business, individuals are forced to re-establish the company as Pte. Ltd., apply for new UEN, update all legal information, bank account and sales platform.
2. Incorrect information when submitting registration application
Errors in filling in company name, address, shareholder or director information cause UEN to not match legal documents such as contracts, invoices, bank records.
Consequence: Businesses must correct information at ACRA, which costs money and prolongs processing time.
Practical case: A tech startup in Singapore incorrectly filled in its initials, causing UEN to not match the brand name on its US partner contract, slowing down the signing process.
3. Not updating information changes after being granted UEN
Enterprises change directors, shareholders or head office address but Failure to update information with ACRA – leading to discrepancies between legal data and operational reality.
- Causes discrepancies between UEN and ACRA data, resulting in transactions being rejected by banks, partners or government agencies.
- Administrative penalty for failure to comply with reporting obligations to ACRA.
For example: A financial services company changed its Singapore office address but did not update it with ACRA. When applying for a license, MAS rejected it due to information not being synchronized with UEN.
4. Misunderstanding the scope of UEN usage
Many businesses mistakenly believe that UEN is only used for tax reporting purposes, but in reality UEN is also required in most legal and commercial transactions:
Consequence
- Using the wrong code in a tax return or invoice can result in a warning or penalty from IRAS.
- Legality is questionable when the UEN number does not appear in full.
For example: A trading company in Singapore applied for an import-export license but wrote an internal registration number instead of UEN, and the application was returned.
5. Registering for UEN but not fulfilling legal obligations afterwards
Some businesses think that having a UEN is enough to operate, but forget about mandatory legal obligations such as:
- Annual Return Declaration.
- IRAS Tax Report.
- Maintain corporate secretary.
Failure to comply will result in a fine or removal from ACRA’s system. The UEN will then be invalid and will directly affect the credit profile and re-establishment of the Singapore company.
For example: A Vietnamese SME company opened a company in Singapore for international transactions, but after obtaining UEN, it did not file its Annual Return. After 2 years, ACRA deleted the company from the system, disrupting all operations.
6. How does Global Links Asia support businesses to establish Singapore companies and register UEN codes accurately and legally?
Global Links Asia provides complete support for businesses in registering UEN codes, ensuring accurate, legal records and saving time:
- Consulting on suitable business types (Sole Proprietorship, Partnership, Pte. Ltd.) to ensure UEN is accepted for business purposes, open bank accounts, register payment gateways.
- Check & name your business: As per ACRA regulations, avoid duplication or violation of prohibitions, to ensure smooth UEN application process.
- Prepare & file online with ACRA: ensure legal information (shareholders, directors, head office address) is accurate and error-free.
- Service Provider nominee director, corporate secretary, representative office according to Singapore law.
- Support for bank account registration (physical & digital banking) and Employment Pass for foreign personnel
- Instructions for using UEN in practice (IRAS tax declaration, contracts, invoices, opening bank accounts, license registration).
- Track & update changes (shareholders, directors, company address) promptly with ACRA to keep the UEN valid.
- Long term companionship With compliance services and regular reporting, avoid the risk of fines or UEN cancellation.
7. Frequently asked questions when registering for a Singapore company UEN number
1. Is UEN a Business Registration Number?
Yes, the UEN number replaces all previous business registration numbers and becomes the unique number when businesses/organizations transact with the Singapore government.
2. Is the UEN number the same as the Tax Reference Number?
No. These two codes serve different functions and are not interchangeable.
- UEN is legal identifier of the business/organization.
- Tax Reference Number is issued by IRAS specifically for this purpose. tax declaration.
3. Is there a fee to register for UEN?
UEN code is free level when registering a business in Singapore. However, if you want to own a memorable and outstanding code, the business can choose Special UEN (SUN) from the list available for a fee:
- Level 8: SGD 3.000 for a nice, easy-to-recognize code (eg: 201888888A).
- Level 8: SGD 1.000 for an easy-to-remember code (eg: 53499999C).
Using SUN code helps businesses
- Increase brand awareness.
- Make a professional impression on your partners.
- Convenience in transactions.
If SUN is not selected, the system will automatically generate a random UEN code without any charge.
4. Can a Singapore company have multiple UEN numbers?
No. The government in Singapore regulates every company/organization in Singapore. Only one UEN is granted. If the enterprise is dissolved and re-established, the system will issue a completely new UEN code.
5. How long does it take to get a UEN?
Normally, businesses registered through ACRA will receive their UEN immediately upon completion of the registration process. For organizations registered through other agencies such as IRAS, MOE, MOH etc., the time taken to issue the UEN may vary. The code issuance process is automatic and instantaneous, allowing businesses to start trading immediately after incorporation.
Highlights- Singapore uses the UEN number system as a unique identifier for every organization, business and legal entity when transacting with government agencies.
- Businesses can apply for UEN through ACRA or other government agencies depending on the type of organization, with a simplified and digitally integrated process.
- UEN is required to carry out procedures such as paying taxes, opening a bank account, signing contracts, applying for licenses and receiving government assistance.
- GLA assists businesses in registering the correct type of UEN, selecting a special number (SUN) if required, and ensuring full compliance when operating in Singapore.
This article was published by GLA on 01/10/2025. Copyright and accompanying content are intellectual property of GLA. All rights reserved.
This information and guidance is for general informational purposes only and is not intended as specific advice on accounting, tax, legal, or other professional matters. Legal regulations may change and application may vary depending on the specific circumstances; therefore, GLA recommends that individuals and businesses consult with professionals before making any decisions. GLA is not responsible for any damages arising from the use of this content without appropriate professional advice.
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