HSIC Section N: Administrative and Support Services — Codes and Compliance

HSIC Section N covers the divisions, groups and classes that the Census and Statistics Department uses to classify businesses providing administrative, back-office and support services to other organisations. If your business operates in this space, you must select the correct HSIC code when applying for a Business Registration Certificate under the Business Registration Ordinance (Cap. 310), and that classification then shapes how your activities are reported to the IRD and the Census and Statistics Department.

This guide sets out the Section N structure, how to choose a code, the timelines and costs involved, and the compliance obligations that follow. It is written for entrepreneurs, company secretaries and SME operators who need a defensible classification rather than an approximate one.

What is HSIC Section N and who does it apply to?

HSIC Section N — Administrative and Support Services — applies to any business whose principal activity is providing support services to other businesses or to the general public, rather than producing goods or delivering a primary professional service. The classification is published by the Census and Statistics Department as part of the Hong Kong Standard Industrial Classification (HSIC) Version 2.0.

Section N is one of 21 sections (A to U) in HSIC V2.0. It is distinct from Section M (Professional, Scientific and Technical Activities) and Section O (Public Administration), and businesses frequently misclassify between these three. The distinguishing test is whether the service is support to another entity's operations (Section N) or a professional service delivered in its own right (Section M).

Eligibility: who must use a Section N code?

Any person carrying on a business in Hong Kong must register under the Business Registration Ordinance (Cap. 310), and the registration form requires an industry code describing the principal activity. Section N codes apply where:

• The business provides services to other businesses as its principal activity (e.g. office administration, security, cleaning, staffing, call centres, travel arrangement, rental and leasing of tangible goods).
• The business does not primarily sell goods, manufacture, or deliver a regulated profession's core service.
• The business is a sole proprietorship, partnership or incorporated company — the classification applies regardless of legal form.

Non-residents can operate a Section N business in Hong Kong, but an incorporated company requires a local company secretary and a registered address under the Companies Ordinance (Cap. 622).

The Section N structure: divisions, groups and classes

Section N is organised hierarchically. You select the most specific class (six digits) that describes your principal activity. The divisions within Section N are:

Each group subdivides into classes. For example, HSIC 812100 — General cleaning of buildings falls under group 812 (Cleaning activities) within division 81. You must verify the exact class title against the official HSIC V2.0 classification published by the Census and Statistics Department before submitting your application.

Ongoing Compliance Execution

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How to select the correct HSIC Section N code

Select the six-digit class that describes the activity generating the majority of your revenue. Where a business carries on multiple activities, the principal activity — the one contributing the largest share of value added — determines the code. Secondary activities are not separately coded on the Business Registration application.

Step-by-step selection

1. Identify your principal activity: Determine which service generates the largest share of your turnover, not which activity occupies the most staff time.
2. Locate the division: Match your activity to one of the six Section N divisions (77 to 82) using the table above.
3. Drill down to the class: Within the division, identify the group and then the six-digit class. Use the official HSIC V2.0 classification, not third-party summaries.
4. Check the exclusion notes: HSIC class descriptions include "excludes" notes. If your activity is explicitly excluded from a class, move to the class that includes it.
5. Verify against Section M: If your activity is a professional service (accounting, legal, consultancy, engineering), it belongs in Section M, not Section N.
6. Record the code: Enter the six-digit code and title on your Business Registration application (Form 1(a) for sole proprietorships/partnerships, or via the incorporation form for companies).

Common misclassification risks

• Management consultancy is Section M (HSIC 702000 — Management consultancy activities), not Section N, even where the consultancy is described as "business support".
• Bookkeeping is Section M (accounting and bookkeeping activities), not Section N office administration.
• Facilities management combining cleaning, security and maintenance may fall under HSIC 811000 — Combined facilities support activities rather than the individual service classes.
• Call centres are HSIC 822000 — Activities of call centres, distinct from general office administration (821).

Timelines: how long does classification and registration take?

Business registration is processed by the IRD within one month of a complete application, though in practice certificates for electronically filed applications are typically issued within a shorter period — check the latest processing times published by the Inland Revenue Department. The HSIC code selection itself is not a separate approval step; it is part of the registration application.

Under section 5(1) of the Business Registration Ordinance (Cap. 310), "every person carrying on any business in Hong Kong must apply for registration within one month of commencement."

Cost metrics: exact fees for Section N businesses

The costs of registering a Section N business are the standard Business Registration fees, not a Section N-specific charge. The classification itself carries no fee.

Business Registration fees are subject to periodic adjustment in the annual Budget. Do not rely on historical figures — confirm the current fee with the IRD before budgeting. The levy component (currently applied to fund the Protection of Wages on Insolvency Fund) is set out in the same schedule.

Suitability: who should use Section N, and who should not

Section N is the correct classification for businesses whose revenue comes from providing support services to other organisations. It is not suitable for every business that describes itself as "support".

Section N is appropriate for:

• Cleaning, security, landscaping and facilities management companies.
• Employment placement and temporary staffing agencies.
• Travel agencies, tour operators and reservation services.
• Equipment rental and leasing businesses (vehicles, machinery, personal goods).
• Call centres, convention organisers and general business support providers.

Section N is not appropriate for:

• Professional services (accounting, legal, engineering, consultancy) — these belong in Section M.
• Real estate activities — these belong in Section L, even where the business describes itself as property support.
• Information and communication services (IT support, software, data processing) — these belong in Section J.
• Education and training — Section P.
• Manufacturing or goods production — Section C.

If your business straddles Section N and another section, the principal-activity test governs. Document your reasoning — the IRD and the Census and Statistics Department may query an inconsistent classification.

Compliance obligations that follow from Section N classification

Classification as a Section N business does not create additional regulatory obligations in itself, but the underlying activity may be regulated. The compliance burden depends on the specific service, not the HSIC code.

Activity-specific licensing

• Security and investigation (division 80): Private security activities are regulated under the Security and Guarding Services Ordinance (Cap. 460). A Security Company Licence from the Security and Guarding Services Industry Authority is required.
• Travel agents (division 79): Travel agents must hold a licence under the Travel Agents Ordinance (Cap. 218) and, where applicable, membership of the Travel Industry Council of Hong Kong.
• Employment agencies (division 78): Employment placement agencies must hold a licence under the Employment Ordinance (Cap. 57) and the Employment Agency Regulations.
• Money service operators: If your Section N business includes remittance or money changing, a licence from the Customs and Excise Department is required under the Anti-Money Laundering and Counter-Terrorist Financing Ordinance (Cap. 615).

General compliance

• Business Registration Certificate must be displayed at the place of business (Business Registration Ordinance, Cap. 310).
• Profits tax returns must be filed with the IRD; the HSIC code on your registration informs the IRD's profiling but does not determine tax treatment.
• Annual returns (for incorporated companies) must be filed with the Companies Registry under the Companies Ordinance (Cap. 622).
• Employer's returns must be filed for staff under the Inland Revenue Ordinance (Cap. 112).

The Census and Statistics Department states that the HSIC is "used in the compilation of statistics on business activities" and that businesses are classified "according to their principal activity" — reinforcing that the code must reflect the dominant revenue-generating activity, not a secondary one.

Frequently asked questions

Q: Can I change my HSIC code after registration? A: Yes. If your principal activity changes, notify the IRD and update your business registration particulars. The Census and Statistics Department also accepts classification updates through its survey processes. Confirm the current procedure with the IRD.

Q: Does my HSIC code affect my tax rate? A: No. Hong Kong profits tax rates are set by the Inland Revenue Ordinance (Cap. 112) and do not vary by HSIC code. The code affects statistical profiling, not tax liability.

Q: What if my business spans two Section N divisions? A: Select the division and class generating the largest share of value added. Record the secondary activity internally for your own records; only the principal activity is coded on the registration.

Q: Is HSIC the same as the UN ISIC system? A: HSIC V2.0 is aligned with the United Nations International Standard Industrial Classification (ISIC Rev. 4) but includes Hong Kong-specific adaptations. Use the HSIC V2.0 classification, not ISIC, for Hong Kong registration.

Q: Do I need a Section N code if I am a sole proprietor? A: Yes. The Business Registration Ordinance (Cap. 310) applies to sole proprietorships and partnerships as well as companies, and the application requires an industry code.

Key takeaways

• Section N covers six divisions (77–82) of administrative and support services.
• Select the six-digit class matching your principal revenue-generating activity.
• The classification carries no fee; standard Business Registration fees apply.
• Activity-specific licences (security, travel, employment agency, money service) apply independently of the HSIC code.
• Verify all current fees and processing times with the IRD and Companies Registry before applying.

-> Use the HSIC Code Finder at /hsic-finder to look up your specific code.