Professional services firms in Singapore — law firms, accounting practices, management consultancies, engineering firms, architects, and similar regulated businesses — operate at the intersection of sector-specific regulation, corporate compliance, and employment law. Getting compliance right is both a legal requirement and a commercial necessity: regulatory shortfalls can result in loss of licence, reputational damage, and personal liability for directors and partners.

This 2026 guide consolidates the key compliance obligations for Singapore professional services firms across registration, sector regulation, employment, data protection, tax, and annual corporate filings.

1. Business Structure and Registration

Professional services firms in Singapore typically choose from three structures:

  • Sole Proprietorship or Partnership — common for smaller practices, particularly among self-employed professionals like architects and engineers. Owners bear unlimited personal liability.
  • Limited Liability Partnership (LLP) — widely used by law firms, accounting firms, and management consultants. Partners have limited liability for the firm’s obligations (though not for their own negligence or wrongful acts). Requires at least one manager resident in Singapore.
  • Private Limited Company (Pte Ltd) — used by engineering firms, IT consultancies, and other professional services businesses where the relevant regulatory framework permits corporate practice. Offers full limited liability and is eligible for the Start-Up Tax Exemption in the first three years.

All entities must be registered with ACRA before commencing practice. The ACRA registration process involves choosing the correct business activity code (SSIC code), appointing a registered office address, and designating at least one manager or director who is ordinarily resident in Singapore.

Certain professional bodies impose additional requirements on the structure. For example, law practices must be approved by the Legal Services Regulatory Authority (LSRA), and accounting firms providing public accountancy services must be registered with ACRA under the Accountants Act.

2. Sector-Specific Licensing and Registration

Law Firms

Law practices in Singapore are regulated by the Legal Services Regulatory Authority (LSRA). Key requirements include:

  • Law practice entity licence: All law firms (whether Singapore Law Practice, Qualifying Foreign Law Practice, Licensed Foreign Law Practice, or Joint Law Venture) must hold a valid licence from LSRA.
  • Solicitor admission: All lawyers practising Singapore law must be admitted to the Singapore Bar and hold a current practising certificate issued by the Law Society of Singapore.
  • Annual practising certificate renewal: Practising certificates must be renewed annually by 31 December. Failure to renew results in inability to practise.
  • Professional indemnity insurance: All law firms must maintain professional indemnity insurance that meets the Law Society’s minimum standards.
  • Continuing professional development (CPD): Lawyers must complete the prescribed number of CPD points annually as a condition for renewal of the practising certificate.

Accounting Firms

Accounting firms providing public accountancy services (audit of public accounts) must be registered with ACRA under the Accountants Act. Key requirements:

  • Public Accounting Firm (PAF) registration: Required for any firm that holds out as offering public accountancy services. Individual public accountants must also be registered with ACRA.
  • Continuing professional education (CPE): Registered public accountants must complete CPE requirements as prescribed by ACRA and the Institute of Singapore Chartered Accountants (ISCA).
  • Professional indemnity insurance: Required for registered public accountants in practice.

Accounting firms offering non-audit services (bookkeeping, tax, corporate secretarial) are not required to register as PAFs but must comply with general business registration requirements.

Engineering and Architecture Firms

  • Professional Engineer (PE) registration: Engineers practising in Singapore in the regulated branches (civil, structural, electrical, mechanical) must be registered with the Professional Engineers Board (PEB).
  • Registered Architect (RA) registration: Architects must be registered with the Board of Architects (BOA) Singapore.
  • Firm practice licence: Engineering and architecture firms must obtain the appropriate practice licence from PEB or BOA respectively before commencing project work.

Medical and Healthcare Professionals

Medical clinics, dental practices, and allied health firms are regulated by the Ministry of Health (MOH) and the relevant professional registration boards (Singapore Medical Council, Singapore Dental Council, etc.). Private medical clinics must also hold a valid licence under the Private Hospitals and Medical Clinics Act.

Financial Advisory and Wealth Management Firms

Financial advisory firms must hold a financial adviser’s licence under the Financial Advisers Act. Fund managers require a capital markets services licence. The relevant regulator is MAS. Given the complexity of MAS licensing, these firms should engage specialist regulatory counsel.

3. GST Registration and Compliance

Professional services are generally subject to GST at the standard 9% rate in Singapore. The S$1 million taxable turnover threshold applies in the same way as for other businesses. However, professional services firms providing services to overseas clients may be able to zero-rate those supplies if the conditions for zero-rating are met (the services are performed for persons who belong outside Singapore and the services are not directly in connection with land or goods in Singapore).

InvoiceNow Obligation

From 1 April 2026, all new GST registrants — including new professional services firms registering for GST — must use InvoiceNow-compliant accounting software. Professional services firms renewing or switching their accounting systems should ensure compliance with the Peppol-based InvoiceNow standard. IMDA’s transition grants (up to S$25,000) are available to offset the cost of adopting compliant software.

4. Corporate Tax

The corporate tax rate is 17% on chargeable income for companies. LLPs are transparent for tax purposes — partners are taxed individually on their share of the LLP’s income. Sole proprietors and partnership partners file personal income tax.

Professional services companies (Pte Ltd) can benefit from:

  • Start-Up Tax Exemption (SUTE): For the first 3 years of assessment — 75% exemption on the first S$100,000 and 50% exemption on the next S$100,000 of chargeable income. Qualifying conditions apply.
  • Partial Tax Exemption: 75% exemption on the first S$10,000 and 50% exemption on the next S$190,000 for all years after SUTE.
  • Productivity and Innovation Credit-type deductions: Enhanced deductions may be available for qualifying R&D, IP, and automation expenditure under various IRAS schemes.

ECI must be filed within 3 months of the financial year end. Form C-S (for companies with turnover below S$5 million) or Form C is due 30 November annually.

5. Employment Law for Professional Services Firms

Professional services firms are typically knowledge-intensive businesses with skilled workforces. Employment compliance is critical.

Employment Contracts and Key Employment Terms

All employees must receive written contracts setting out key employment terms within 14 days of commencement. For professional roles, contracts should clearly address:

  • Role, responsibilities, and reporting structure
  • Remuneration (base salary, bonus, profit-sharing if applicable)
  • Working hours (many professional services employees are excluded from the Part IV overtime provisions but are still covered by the core employment protections)
  • Confidentiality and intellectual property assignment obligations
  • Restrictive covenants (post-termination non-solicitation, non-compete) — these must be reasonable in scope and duration to be enforceable under Singapore law

CPF and Payroll Compliance

CPF contributions are mandatory for all Singapore citizen and PR employees. Professional services firms frequently engage contractors or freelancers — firms must correctly classify workers to avoid the risk of misclassification. A worker who is functionally an employee (with fixed hours, supervision, and dedicated tools) must be treated as an employee even if engaged under a services contract. MOM and CPF Board enforcement in this area has increased in recent years.

Retirement and Re-Employment (Effective 1 July 2026)

From 1 July 2026, the statutory retirement age is 64 and the re-employment age is 69. Professional services firms with experienced senior professionals must comply with the re-employment obligations — offering eligible employees (Singapore citizens and PRs with satisfactory performance who have served at least one year) continued employment up to age 69.

Work Passes for Foreign Professionals

Professional services firms frequently employ foreign specialists. Employment Pass (EP) requirements from 1 January 2027 include a minimum qualifying salary of S$6,000/month (currently S$5,600/month). The COMPASS scoring framework applies to EP applications and renewals. Finance sector firms face higher EP salary thresholds.

Consider engaging a licensed employment agency for work pass applications, renewals, and advising on COMPASS scoring. Our Singapore Employment Agency team handles work passes for professional services clients.

6. Data Protection: PDPA for Professional Services

Professional services firms handle highly sensitive client data — financial records, legal documents, medical records, business plans. The PDPA obligations are therefore particularly important for these firms.

Confidentiality vs PDPA

Professional confidentiality obligations (e.g., solicitor-client privilege for lawyers, accountant-client confidentiality, medical confidentiality) exist separately from but alongside PDPA obligations. PDPA establishes the minimum legal floor for data protection. Professional duties of confidentiality may impose stricter standards.

Key PDPA Obligations

  • Data Protection Officer (DPO): Mandatory for all organisations subject to PDPA. The DPO’s contact details must be publicly accessible.
  • Data protection policy: Document how personal data is collected, used, disclosed, and retained.
  • Breach notification: Notify PDPC within 3 business days of a breach that is likely to cause significant harm. Notify affected individuals where warranted.
  • Third-party data processors: Professional services firms that engage third-party service providers (cloud storage, payroll systems, CRM platforms) must ensure contractual data protection safeguards are in place.
  • Transfer of personal data overseas: Subject to conditions if sending client data to foreign offices or third parties outside Singapore.

7. Anti-Money Laundering (AML) Obligations

Certain categories of professional services providers are subject to AML/CFT obligations under Singapore law, over and above the general Corruption, Drug Trafficking and Other Serious Crimes (CDSA) obligations applicable to all businesses.

  • Lawyers: Legal professionals who handle client moneys, provide trust and company services, or carry out real estate transactions are subject to customer due diligence (CDD) obligations and the legal profession’s AML/CFT rules.
  • Accountants and corporate secretarial service providers: Accounting and corporate service providers (ACSPs) providing trust and company services are subject to MAS-aligned AML/CFT guidelines. ACSPs must conduct CDD on clients, maintain KYC records for 5 years, and file Suspicious Activity Reports (SARs) with the Suspicious Transaction Reporting Office (STRO) where warranted.
  • Financial advisers and fund managers: Subject to MAS Notice FAA-N06 and CMS licensees’ AML notices. These are comprehensive CDD and transaction monitoring obligations.

8. Annual Corporate Compliance

All Singapore business entities have annual compliance obligations with ACRA:

  • Annual Return (AR): Filed by private limited companies within 7 months of the financial year end (or by the 31 July deadline for companies with 31 December year ends). LLPs must file annual declarations with ACRA.
  • Financial Statements: Companies must prepare financial statements compliant with Singapore Financial Reporting Standards (SFRS) or SFRS for Small Entities. Many professional services companies qualify for the simplified SFRS for SE framework.
  • AGM: Required within 6 months of the financial year end for non-exempt private companies. Exempt private companies may dispense with the AGM but must still send financial statements to shareholders.
  • Corporate Secretary: Every company must appoint a corporate secretary within 6 months of incorporation. The corporate secretary must be resident in Singapore and is responsible for ACRA filings, maintaining registers, and filing notices of changes.

2026 Compliance Calendar for Professional Services Firms

Key dates for Singapore professional services firms in 2026:

  • 31 July 2026: ACRA Annual Return deadline for companies with 31 December 2025 financial year end
  • 30 November 2026: IRAS Form C / Form C-S deadline for corporate income tax
  • 31 December 2026: Annual practising certificate renewal deadline for lawyers
  • Rolling: GST returns due within 1 month of end of each accounting period; CPF contributions due by 14th of each following month

How Raffles Corporate Services Supports Professional Services Firms

Raffles Corporate Services works with professional services firms across Singapore, providing:

  • Company incorporation and LLP registration with ACRA
  • Corporate secretarial services — annual returns, director changes, shareholder matters, AGM administration
  • GST registration, quarterly filing, and InvoiceNow transition support
  • Corporate tax compliance — ECI, Form C-S, financial statement preparation
  • Payroll administration and CPF compliance
  • Employment pass applications for foreign professionals
  • PDPA compliance advisory — DPO designation, data protection policies, breach response

To discuss your firm’s compliance requirements, contact us at [email protected] or reach us on WhatsApp at +65 8501 7133.

— The Editorial Team, Raffles Corporate Services