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Tax Deadlines in Singapore for 2025: Every Small Business Should Know

As a small business owner in Singapore, managing your taxes may feel like a challenge. However, keeping up with tax deadlines doesn’t need to be stressful. With a clear grasp of the important tax deadlines in 2025 and some forward planning, you can navigate the year with ease. Let’s break down the key tax deadlines for 2025 and share practical tips to help you stay on track.

1. Corporate Income Tax

a. Filing Estimated Chargeable Income (ECI)

  • Deadline: Within three months after the end of your company’s financial year.

Submitting your ECI is a fundamental step for companies. If your business has no chargeable income, you may still need to file a “Nil” ECI unless the Inland Revenue Authority of Singapore (IRAS) has waived the requirement. Staying ahead ensures you won’t be caught off guard.

b. Filing Corporate Income Tax Returns (Form C-S/C)

  • e-Filing Deadline: 30 November 2025

All companies, even those that are dormant, are required to submit their corporate tax returns. To streamline the process, ensure your financial statements and any supporting documents are organised early.

2. Goods and Services Tax (GST)

a. Quarterly GST Filing

Filing dates depend on your GST accounting cycle. Typical deadlines are:

  • 31 January 2025 (for Oct-Dec 2024 period)
  • 30 April 2025 (for Jan-Mar 2025 period)
  • 31 July 2025 (for Apr-Jun 2025 period)
  • 31 October 2025 (for Jul-Sep 2025 period)

Filing GST returns accurately and on time is essential for compliance. Use reminders or accounting tools to stay ahead of these dates.

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3. Individual Income Tax for Sole Proprietors

a. e-Filing of Individual Tax Returns

  • Deadline: 18 April 2025 (for online submissions)

If you operate as a sole proprietor, your business earnings will be reported as part of your individual income tax. Keeping thorough financial records will simplify this process.

b. Paper Filing Deadline

  • Deadline: 15 April 2025

While most prefer e-Filing, paper submissions remain an option. Be sure to mail your return well in advance of the deadline.

4. Property Tax

a. Annual Property Tax Payment

  • Deadline: 31 January 2025

Property owners must ensure timely payment of their annual property taxes. If you’re enrolled in GIRO, instalment payment plans can make it easier to manage.

5. Other Key Deadlines

a. Filing Employer’s Return (IR8A, Appendix 8A, Appendix 8B, IR8S)

  • Deadline: 1 March 2025

Employers need to prepare and submit employee income records, including salary details, CPF contributions, and bonuses. Starting early will save you from last-minute stress.

b. Annual Filing Requirements for Dormant Companies

Even if your company is dormant, you may still need to file specific forms, like the annual return to the Accounting and Corporate Regulatory Authority (ACRA). Deadlines depend on your company’s financial year-end, so check the requirements early

Summary

Meeting tax deadlines in 2025 is about more than avoiding fines—it’s a sign of a well-run business. By staying informed and planning ahead, you’ll keep your operations compliant and set your business up for success. With the right preparation and support, managing taxes can become a smoother part of your business routine. Note these tax deadlines in 2025 in your calendar, and you’ll be ready to tackle the year with confidence!

Please note that tax regulations and deadlines are subject to change. It’s advisable to consult the official IRAS website or a tax professional for the most current information.

How Counto Can Help

Get accounting and tax filing in one smart solution. Our platform combines AI-powered bookkeeping with expert tax support, while your dedicated Customer Success Manager is just a message away. Choose a plan that covers all your needs at one fixed price. Chat with us now, email [email protected], or use our  contact form.

 

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Minimum Corporate Tax Rate in Singapore 2025

2025 Regulatory Changes

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Accounting Firms vs. Individual Accountants

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