How to Stay IRAS-Compliant: A Checklist for Singapore SMEs

 Staying compliant with the Inland Revenue Authority of Singapore (IRAS) is not just about avoiding penalties — it's also about maintaining a clean and trustworthy reputation as a business. For Singapore SMEs, navigating tax requirements, deadlines, and digital filing systems can be overwhelming.

This checklist is designed to help small and medium-sized businesses ensure they meet all their obligations throughout the year.

 

✅ 1. Register for GST (if applicable)

If your business has an annual taxable turnover exceeding S$1 million, you must register for GST. Voluntary registration is also an option for businesses below that threshold but comes with responsibilities.

Checklist:

• Monitor annual revenue.
• Apply for GST registration on IRAS myTax Portal.
• File GST returns quarterly and on time.

 

✅ 2. Keep Proper Accounting Records

IRAS requires businesses to maintain records for at least 5 years. These include invoices, receipts, bank statements, and accounting ledgers.

Checklist:

• Use accounting software (like Xero or QuickBooks) to track all transactions.
• Back up records regularly (cloud or local).
• Organise documents by year and transaction type.

 

✅ 3. Timely Filing of Corporate Tax

Companies are required to file two forms each year:

• Estimated Chargeable Income (ECI) within 3 months from the end of the financial year.
• Form C-S or C by 30 November of the following year.

Checklist:

• Know your financial year-end.
• Submit ECI on time (or apply for a waiver if applicable).
• File Form C-S/C online by the deadline.

 

✅ 4. Issue Proper Tax Invoices

If you're GST-registered, issuing proper tax invoices is mandatory. These must include:

• GST registration number
• Invoice date
• Description of goods/services
• GST amount

Checklist:

• Ensure invoice templates meet IRAS standards.
• Train staff on issuing correct invoices.
• Keep copies for audit purposes.

 

✅ 5. Ensure CPF and Staff-Related Tax Compliance

If you have employees, you must:

• Make timely CPF contributions
• Submit IR8A and Appendix 8A/8B/IR8S by 1 March each year
• Comply with Auto-Inclusion Scheme (AIS) for employers

Checklist:

• CPF paid monthly by 14th of the following month.
• IR8A/IR8S submitted annually.
• Join AIS if you have 5+ employees.

 

✅ 6. Know Your Tax Reliefs and Incentives

Singapore offers various schemes and tax incentives that SMEs can benefit from, such as:

• Start-up Tax Exemption Scheme
• Corporate Income Tax Rebate (check updates yearly)

Checklist:

• Review eligibility for schemes yearly.
• Maintain supporting documents for claims.

 

✅ 7. Respond Promptly to IRAS Queries or Notices

IRAS may send queries, reminders, or audit notices. It’s important to respond promptly and accurately.

Checklist:

• Monitor business correspondence and email regularly.
• Keep a tax agent (like Kenwyn Accounting!) informed.
• Cooperate during audits or requests for clarification.

 

✅ 8. Engage a Professional Accountant or Tax Agent

Many SMEs find compliance easier with a trusted accounting partner. A professional will:

• Keep your books in order
• File returns accurately
• Advise on tax efficiency and risk

Checklist:

• Engage a reputable firm with IRAS experience.
• Review reports and filings regularly with your accountant.

 

✅ Final Thoughts

Tax compliance doesn’t need to be stressful. With the right systems, timely action, and support, your SME can stay on IRAS’s good side — and focus on growing the business.

At Kenwyn Accounting and IT Services Pte Ltd, we help businesses stay compliant, digitally organised, and future-ready. Contact us today to schedule a free consultation.