Independent guide for Singapore businesses and consumers
GST Registration Check Singapore
Need to confirm whether a supplier, contractor, or business partner is GST-registered in Singapore? This plain-English guide explains how the official IRAS search works, what you can search by, how to read the result, and what to do when something looks unclear.
Check GST Registration (opens the official IRAS website in a new tab) See how it works
The button takes you to the official IRAS GST Registered Business Search. The actual search is run by IRAS, not by this website.
How to Check GST Registration
Anyone can check whether a business is GST-registered using the IRAS myTax Portal. According to the official page, members of the public do not need to log in to use this search. Here is the process in simple steps.
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Open the official IRAS search page
Go to the GST Registered Business Search on the IRAS myTax Portal. Look for the .gov.sg address and the secure lock symbol in your browser before typing anything.
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Enter the business name or a tax reference number
The official page lets you search using one business name, or using up to four tax reference numbers. Tax reference numbers include a UEN, a GST registration number, or an NRIC for owners of sole proprietorships.
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Add more numbers if you need to
If you want to check several businesses together, use the “Add Tax Ref No.” option on the official page. Note that multiple entries must all be tax reference numbers. Business names cannot be mixed in.
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Type the CAPTCHA code
The official page asks you to retype a CAPTCHA code shown as an image. An audio option is also provided on the page.
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Submit the search and review the result
Compare what IRAS shows with the details on the invoice, quotation, or contract in front of you. Section 6 below explains what to look for.
Tip: IRAS recommends searching by UEN or GST registration number for the best results. If you search by business name, the official page requires at least the first five characters of the name.
What you can search by
The official page includes example formats for each type of search. The table below summarises them. The examples are format illustrations taken from the IRAS page, not real businesses.
| Search by | Applies to | Example format |
|---|---|---|
| UEN | Local companies (for example Pte. Ltd.) | 200312345A |
| UEN | Partnerships | 52912345A |
| UEN | Foreign companies | T08FC1234A |
| UEN | Limited liability partnerships | T08LL1234A |
| UEN | Clubs, associations, societies, government agencies and others | T08SS1234A |
| GST registration number | GST group or divisional registrations, sole proprietorships, and overseas vendors under the simplified pay-only regime | M91234567X, MR2345678A, MB2345678A, MX2345678A |
| Business name | Any business, using at least the first five characters of its name | ABCDE |
| NRIC | Individuals who own sole proprietorships | Format shown on the official page |
Only use a person’s NRIC if you genuinely need it for a legitimate business check. In most cases, the UEN or GST registration number printed on the supplier’s invoice is all you need.
Using a phone? At the time of writing, the official page can show an “Unsupported Screen Resolution” message on very small screens. If that happens, try a tablet or computer, or follow the suggestions on the IRAS page, such as reducing your display size setting or enlarging the browser window.
What Is a GST Registration Check?
Goods and Services Tax, or GST, is a tax on the supply of most goods and services in Singapore. Only businesses that are registered for GST with the Inland Revenue Authority of Singapore (IRAS) should charge it. A GST registration check is the simple act of confirming, through the official IRAS service, that a particular business appears as GST-registered.
In everyday terms, it answers one question: “Is this business registered with IRAS to charge and account for GST?” It does not tell you whether the business is reputable, financially healthy, or good at what it does. It is only one piece of due diligence, and it is a quick one.
You might also see it described as a GST registered company search, GST number verification, or a check on whether a company is GST-registered. All of these refer to the same basic idea: looking up the business on the official IRAS listing rather than relying only on what appears on a quotation or invoice.
Because the information comes from IRAS, the official search is the proper place to confirm status. Third-party websites, including this one, cannot replace it. This website exists to explain the process clearly, not to hold or display any GST records of its own.
Why Verify GST Registration?
A short check before you pay or sign can prevent confusion later. These are the most common practical reasons people look up a business’s GST status.
Confirm GST on an invoice is legitimate
If a business adds GST to its prices, it should be GST-registered. Checking the number on the invoice against the official listing gives you a reasonable first confirmation.
Support your own GST claims
If your business is GST-registered, claiming input tax depends on meeting IRAS conditions. Knowing that a supplier is registered, and when, helps you keep cleaner records. See the IRAS page on conditions for claiming input tax.
Onboard suppliers with care
When you add a new vendor, a GST check fits naturally into your supplier onboarding checklist next to company registration details and contact verification.
Spot mismatches early
A name, number, or date that does not match the official result is a prompt to ask questions, request documents, or pause the payment until things are clarified.
Reduce the risk of scams
Fraudsters sometimes copy company names or invent registration numbers. Looking up details yourself on an official .gov.sg page, rather than a link in a message, is a sensible habit.
Understand your own position
Business owners can also search for their own company to see how it appears publicly, which can help you notice errors before customers do.
How to Check a GST Registration Number
If you want to check a GST registration number specifically, the process is the same as the general steps above, with a few extra points worth knowing.
Find the number on the document
GST-registered businesses are expected to show their GST registration number on tax invoices. Look at the header or footer of the invoice, the quotation, or the contract. If you cannot find any registration number, ask the business to provide it in writing.
Enter it exactly as shown
Type the number into the official search page without adding spaces or extra characters. Check each letter and digit carefully, since a single wrong character can lead to a “no result” outcome that has nothing to do with the business.
GST registration is not the same as business registration
It is easy to mix up two different things:
Business or company registration
This shows that an entity exists and is registered to operate in Singapore. For companies and many other entities, this is handled by the Accounting and Corporate Regulatory Authority (ACRA). The identifier is usually the UEN.
GST registration
This is a tax status managed by IRAS. A business can be properly registered as a company yet not be GST-registered, for example if it is below the turnover threshold and has not applied voluntarily.
UEN and GST registration number
The official IRAS page notes that some entities use their UEN as their GST registration number. Other arrangements, such as GST group registrations and sole proprietorships, can have a separate GST registration number in a different format. This is why the IRAS search accepts several kinds of identifiers.
For a complete, up-to-date explanation of the search itself, read the IRAS page on checking if a business is GST-registered.
Understanding Search Results
The result page is produced by IRAS, so the exact layout and wording may change over time. What matters is comparing the official information with the details you were given.
What to review
- Business name: does the registered name match the name on the invoice or contract? Minor differences, such as abbreviations, may be harmless, but a completely different name deserves a question.
- Identifier: does the UEN or GST registration number shown match the number you entered and the one on the document?
- Registration dates: if the result shows when registration started or ended, check that the invoice date falls inside that period.
- Overall status: read the wording on the official result page carefully. If it does not make sense to you, do not guess.
If a result is unclear or unavailable
A missing or confusing result does not automatically mean anything is wrong. There are many ordinary reasons for it. Work through these steps calmly:
- Re-check spelling and every character of the number you entered.
- Try searching by UEN or GST registration number instead of the business name, since IRAS recommends this for best results.
- Try a different identifier if the business has more than one, such as its UEN.
- Ask the business to confirm its GST registration number and, if appropriate, to share its GST registration notice from IRAS.
- If you still cannot resolve it, contact IRAS through the official contact page.
Important: A search that returns nothing is not proof of fraud, and a search that returns a match is not proof that the business is trustworthy. Treat the result as one useful data point, and combine it with other checks.
If you suspect that a business is charging GST without being registered, IRAS provides guidance on its tax evasion or fraud page. Use the official channels rather than confronting the business or sharing accusations publicly.
Singapore GST Registration Requirements
Understanding who has to register helps you make sense of why some businesses appear on the GST listing and others do not. The summary below is based on IRAS information reviewed on 19 October 2026. Rules and thresholds can change, so always confirm on the official IRAS page before making a decision.
Compulsory GST registration
According to IRAS, a business must register for GST if its taxable turnover is more than S$1 million under either of two tests:
| Test | When it applies | What IRAS says about timing |
|---|---|---|
| Retrospective view | Taxable turnover for the calendar year (1 January to 31 December) was more than S$1 million. | Apply between 1 and 30 January of the following year. Registration takes effect on 1 March. |
| Prospective view | The business can reasonably expect taxable turnover to be more than S$1 million in the next 12 months. | Apply within 30 days after the date of the forecast. For forecasts made on or after 1 July 2025, IRAS gives a two-month grace period before registration takes effect. |
What counts as taxable turnover?
IRAS explains that taxable turnover is the total value of taxable supplies made in Singapore in the course of business. This includes standard-rated supplies and zero-rated supplies, such as many exports and international services. It excludes exempt supplies, out-of-scope supplies, and the sale of capital assets such as machinery or furniture. IRAS also provides a GST registration calculator to help businesses assess their position.
Exceptions and exemption
In certain situations, a business that would otherwise have to register may apply for exemption. One example given by IRAS is a business whose taxable turnover comes wholly or mainly from zero-rated supplies. The conditions are specific, so read the IRAS page on applying for exemption from GST registration.
Voluntary GST registration
A business that is not required to register may still choose to register voluntarily if it qualifies. IRAS lists qualifying situations, for example when the business makes taxable supplies. IRAS also states that voluntarily registered businesses must remain registered for two years, so it encourages businesses to weigh the benefits and costs over that period. Registration brings responsibilities such as charging GST, filing returns, and keeping records. Read the full details in IRAS’s guide on factors to consider before registering voluntarily for GST.
The current GST rate
IRAS states that the current GST rate in Singapore is 9%. You can confirm the latest information on the official current GST rates page.
Official sources for this section
Common GST Checking Mistakes
Most problems come from small slips rather than anything dramatic. Here are the mistakes people make most often, and how to avoid them.
Mixing up UEN and GST number
Some businesses use the same number for both, and others do not. Use the exact number printed on the invoice, and if one does not work, try the other.
Searching by a short or partial name
The official search needs at least the first five characters of a business name. Names can also differ from trading names, so a number search is more dependable.
Typing errors
A swapped letter or a digit mistaken for a similar one is a very common reason for “no result”. Copy the number carefully and compare it to the source document.
Using an unofficial website
Look-alike sites may ask for personal data or payment. Use the official .gov.sg address, and never share your Singpass details or banking passwords for a simple registration check.
Ignoring the dates
A business may be registered now but not have been registered when an older invoice was issued. If the result shows dates, compare them with the invoice date.
Assuming a missing result means fraud
There are many ordinary explanations. Re-check the details, ask the business for confirmation, and contact IRAS if you need clarity before drawing any conclusions.
Frequently Asked Questions
How do I check if a company is GST-registered in Singapore?
Use the official IRAS GST Registered Business Search on the myTax Portal. Enter the business name or a tax reference number such as a UEN or GST registration number, complete the CAPTCHA, and review the result against the details on your invoice.
Do I need to log in to check GST registration?
No. IRAS states that members of the public can use this search without logging in to the myTax Portal.
Can I search by company name?
Yes, but IRAS asks for at least the first five characters of the business name and recommends searching by UEN or GST registration number for the best results.
Can I check several businesses at once?
The official page allows up to four tax reference numbers in a single search. A business name search is limited to one name at a time, and the two types cannot be mixed in the same search.
Is a UEN the same as a GST registration number?
Not always. IRAS notes that some entities use their UEN as their GST registration number, while others, such as GST groups and sole proprietorships, may have a separately formatted GST registration number. Business registration and GST registration are also different processes.
What if the official search shows no result?
Re-check spelling and the number, try a UEN or GST registration number instead of the name, and ask the business to confirm its details. A missing result is not automatic proof of wrongdoing. If it stays unclear, contact IRAS.
Does this website check GST registration for me?
No. This is an independent information website. It has no search tool, does not connect to government records, and cannot show you any GST status. Use the official IRAS page for the actual check.
What is the current GST rate in Singapore?
IRAS states that the current rate is 9%. Check the official current GST rates page for the latest information.
When must a business register for GST?
IRAS says registration is compulsory when taxable turnover is more than S$1 million, either at the end of a calendar year or when it is reasonably expected to exceed that amount in the next 12 months. Exceptions and exemptions may apply, so read the official guidance.
Can a business below S$1 million register for GST?
Yes, voluntary registration is possible if the business qualifies under IRAS rules. IRAS notes that voluntarily registered businesses must remain registered for two years, so the costs and benefits should be considered carefully first.
Ready to Check a Business?
You now know what to enter, what to look for, and how to handle an unclear result. When you are ready, open the official IRAS GST Registered Business Search and run your check. It is free, and it takes only a few minutes.
Independent Website Disclaimer
This website is an independent informational resource. It is not affiliated with, endorsed by, or operated by the Inland Revenue Authority of Singapore (IRAS) or the Singapore Government, and it is not an official government website. It does not access live government records and cannot confirm the GST status of any business.
The content is provided for general information only and is not tax, legal, or financial advice. Tax rules and thresholds can change. Always rely on the official IRAS website or a qualified professional for decisions that affect your business.