Singapore Due Diligence Checklist: 14 Points for Foreign Founders
14 point Singapore due diligence checklist for foreign founders and investors. Includes ACRA, IRAS and SLA checks plus contracts, tax, CPF, work pass and...
Published: 21 July 2026
SSIC codes are standardized five-digit codes that classify every Singapore-registered business’s primary economic activity for regulatory and statistical purposes. All ACRA-registered entities must select at least one SSIC code when reserving a business name on BizFile+. Selecting the wrong code carries real consequences: fines of up to S$2,000 and potential delays in licensing, grant eligibility, and regulatory approvals.
Key facts to know before you register:
The SSIC 2025 framework uses a five-level hierarchy that moves from broad industry categories down to highly specific sub-classes. SingStat and ACRA jointly maintain this classification, which aligns with the United Nations’ ISIC Rev. 5 international standard for global comparability.
The hierarchy works as follows:
SSIC 2025 contains 1,062 Sub-classes in total, an update from the 2020 edition. New codes cover emerging sectors including carbon capture activities, alternate protein manufacturing, and concert organizers. Codes that had few registered units were removed or merged to keep the classification current.
The five-digit code is the only one you submit to ACRA. It automatically bundles all higher classification levels into a single identifier, so selecting the correct sub-class is the entire task.

Finding the right code takes three steps. Follow them in order to avoid misclassification.
Search BizFile+ with a simple keyword. Log in to the ACRA BizFile+ portal, go to “Business Activity,” and enter a plain-English term describing what your business does. Use one or two words, not a full sentence. “Web design,” “catering,” or “device repair” will return better results than “providing digital marketing and website development services.”
Cross-check using GoBusiness e-Adviser. The GoBusiness e-Adviser tool provides step-by-step guidance for new businesses, including SSIC code suggestions before you apply on BizFile+. It is especially useful if you are unsure which sector your activity falls under.
Verify against the official SingStat definitions. Each five-digit code in the SSIC 2025 list carries a lead statement, examples of included activities, and a list of exclusions. Read the exclusions carefully. A code that looks right by title may explicitly exclude your specific activity.
Additional checks before finalizing:
The table below illustrates how different codes map to distinct business activities. SSIC code 46900 is one of the most frequently selected wholesale codes, covering businesses that trade in a variety of goods without any single dominant product category.

| SSIC Code | Title | Typical Business Example |
|---|---|---|
| 46900 | Wholesale trade of a variety of goods without a dominant product | General trading companies, multi-product distributors |
| — | Software development (except games and cybersecurity) | Mobile app developers, SaaS product companies |
| — | Full-service restaurants | Dine-in restaurants, café-restaurants |
| — | Retail sale via internet | E-commerce businesses with income mainly from online sales |
| — | Legal activities | Law firms, legal advisory practices |
| — | Accounting and auditing activities | Accounting firms, audit practices |
| — | Advertising activities | Advertising agencies, media buying firms |
| — | Online marketplace for goods | Platform operators earning commissions on goods transactions |
Codes ending in “0” at the sub-class level typically indicate a broader grouping with no further split. Codes ending in “9” usually denote n.e.c. categories. Both are valid choices when no more specific code exists, but a precise match always reduces the risk of licensing referrals or grant eligibility issues.
Selecting the right code is straightforward for many businesses, but regulated activities, multi-sector operations, and international structures often benefit from professional services staffing advice. Two Singapore-based corporate service providers specialize in this area.

| Provider | Services Offered | Specialization | Location | Customer Reviews |
|---|---|---|---|---|
| VIVOS Pte. Ltd. | Incorporation, corporate secretarial, tax, accounting, immigration, compliance, financial advisory | International entrepreneurs; end-to-end corporate setup across Singapore, Malaysia, Hong Kong, and UAE | Singapore | 5★ (10 reviews) |
| Singapore Company Incorporation Specialist | Singapore company incorporation | Dedicated incorporation services | Singapore | — |
VIVOS Pte. Ltd. covers the full corporate lifecycle: incorporation, corporate secretarial services, tax filing, accounting, and immigration support. For international entrepreneurs who need SSIC code guidance alongside banking setup, compliance management, and residency facilitation, Vivos handles all of it under one engagement. That breadth is particularly useful when a business spans multiple regulated activities and needs each code cross-checked against licensing requirements.
Singapore Company Incorporation Specialist focuses exclusively on company incorporation. It suits clients whose primary need is a clean, straightforward registration without extended advisory or immigration support.
The right code reflects what your business actually does today, not what it plans to do. SingStat defines the principal activity as the one contributing the highest value added to goods or services produced, not by headcount or future expansion plans.
Key criteria for selection:
Pro Tip: When searching BizFile+, enter the simplest word a customer would use to describe what you sell or do. Single-word searches like “catering,” “logistics,” or “insurance” consistently return more accurate matches than multi-word phrases.
If your business spans two distinct revenue streams, register a primary code for the dominant activity and a secondary code for the second if that secondary activity contributes roughly 20% or more of your business. Both codes appear on your company profile and affect how agencies assess your licensing and grant eligibility.
Business activities change, and your registered SSIC code must stay current. Filing an outdated or inaccurate code creates the same compliance exposure as an initial misclassification.
To update an SSIC code post-registration, file a change through BizFile+ with a S$15 fee. ACRA typically processes the update within 1–2 business days. The revised code then flows through to IRAS and other government systems, correcting your tax treatment, grant eligibility, and licensing profile.
Update your code whenever your primary revenue source shifts to a new activity, when you add a secondary activity that now contributes roughly 20% or more of revenue, or when a new SSIC edition reclassifies your existing code. The SSIC is reviewed every five years, so the transition from SSIC 2020 to SSIC 2025 required many businesses to recode. Staying current with each edition protects your access to government schemes tied to specific classifications. For businesses managing multiple compliance obligations, pairing code updates with a review of core statutory compliance requirements keeps the full regulatory picture accurate.
Getting the SSIC code right is one step in a longer compliance chain. Vivos is the alternative to managing that chain piecemeal, offering a single point of contact for Singapore company incorporation, corporate secretarial services, tax filing, accounting, and immigration support for international entrepreneurs and businesses.

Where a standalone incorporation specialist handles registration and stops, Vivos continues through post-incorporation compliance, SSIC code updates, banking setup, and ongoing corporate advisory. That continuity matters most for businesses entering Singapore from overseas, where regulatory requirements across multiple agencies need coordinated management from day one.
Selecting the correct SSIC code at registration protects your licensing eligibility, grant access, and tax treatment under Singapore’s 2025 classification framework.
| Point | Details |
|---|---|
| SSIC codes are mandatory | All ACRA-registered entities must select a five-digit primary SSIC code at registration. |
| Secondary code threshold | A second code is recommended when a secondary activity contributes roughly 20% or more of business. |
| SSIC 2025 has 1,062 sub-classes | The current edition aligns with ISIC Rev. 5 and covers emerging sectors like carbon capture and alternate proteins. |
| Updating costs S$15 | Filing a code change on BizFile+ costs S$15 and processes within 1–2 business days. |
| Vivos for end-to-end support | Vivos handles incorporation, SSIC guidance, secretarial, tax, and immigration under one engagement for international businesses. |
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Incorporated in Singapore under the Companies Act 1967 UEN 202416468C | ACRA Registered Filing Agent FA20240323 | MOM Employment Agency Licence 24S2425
Malaysia – VIVOS (M) Sdn. Bhd. | Registration Number:
People’s Republic of China, Hong Kong – VIVOS CORPORATE SERVICES (HK) LTD. | Business Registration Number: 80545137
United Arab Emirates, Dubai – VIVOS CORPORATE SERVICES L.L.C. | Commercial Licence Number: 1638200