Companies in Singapore have to meet several deadlines for ACRA and IRAS throughout the year. The exact dates rely on your FYE (Financial Year End), type of company, and tax obligations; however, the main requirements include annual returns, ECI, AGMs, corporate income tax, employee reporting, and GST.

Singapore compliance calendar 2026 assists companies in managing the main ACRA and IRAS deadlines for 2026 by avoiding treating compliance as a last-minute job. 

What are the Main Deadlines of Filing for Companies in Singapore?

The significant deadlines of ACRA are associated with the FYE of your company. The annual return is due within 07 months after the FYE for non-listed companies. For listed companies, the deadline is within 05 months, with a few companies with share capital and international registration of a branch having different deadlines.

For example, if the FYE of your company is 31^st December 2024, the deadline for the annual return would be 31^st July 2025. The FYE of your company helps in the determination of the AGM deadline. The deadline for non-listed companies to hold an AGM is 06 months after the FYE, while listed companies have a deadline of 04 months after the FYE.  It can be observed as well that a few companies can be exempted from holding an AGM under different circumstances.

When is ECI (Estimated Chargeable Income) Due in 2026?

ECI has to be submitted to IRAS within 03 months from FYE, until the company qualifies for filing exemption.

For example, if a company’s FYE is 31^st December 2025, the deadline is 31^st March 2026.

When is the due date for a corporate tax return?

Companies in Singapore need to file their Corporate Income Tax Return by 30^th November 2026 for Year of Assessment 2026, unless there is a waiver of the time limit. This involves eligible companies filing Form C, Form C-S, and Form C-S (Lite).

The main GST deadlines for every business in Singapore are generally due one month after the end of the accounting period. Also, a nil GST return is also required.

For example:

• For the quarter ending 31^st March, the deadline is 30^th April
  • For the month ending 30^th July, the deadline is 31^st August
  • For the month ending 31^st November, the deadline is 31^st December

How Does a Singapore Compliance Calendar 2026 Look Like?

For a business with a 31^st December Financial Year-End, the calendar looks like:

• 1^st March: AIS income reporting for employees
  • 30^th April: GST return filing and payment for quarter ending 31^st March
  • 31^st July: Annual Return filing of ACRA for non-listed companies
  • 31^st July: Annual Return of GST for quarter ending 30^th June
  • 31^st October: GST return and payment for quarter ending 30^th September
  • 30^th November: Corporate Income Tax Return for YA2026
  • 31^st January 2027: GST Return and payment for quarter ending 31^st December 2026

In case of missing these deadlines, companies can be subject to fines and penalties, and enforcement actions in case of repeated non-compliance.

• For example, late filing of annual returns with ACRA can be subject to financial fines of up to 600 SGD, and serious non-compliance could lead to enforcement actions.

How To Manage Compliance Dates?

The simplest way is to create a compliance calendar around the FYE of a company, as compared to depending only on fixed dates. A business ought to record:

• AGM and FYE deadline
  • Annual Return of ACRA deadline
  • Corporate Income Tax
  • ECI filing
  • Deadline for AIS employment reporting
  • GST filing and payment
  • WHT Deadlines, if applicable
  • RORC and statutory register updates

Example

Let us consider a company which is GST-registered and has 7 employees with a 31^st December FYE. The compliance for 2026 includes the deadline for ECI, which is 31^st March; the deadline for the quarterly GST return and ACRA Annual Return is 31^st July. The deadline for Corporate Income Tax Filing for YA 2026 is 30^th November. In the case of an AIS employer, it would also have completed its 2025 income reporting 1^st of March 2026.

Conclusion

In the end, it can be concluded that the most significant ACRA and IRAS deadlines for 2025 are not the same for every business. The GST status, FYE, headcount of employees, and business structure help in the determination of which dates for deadline apply. The simplest way to maintain a calendar is to create a customized date calendar that should include GST, Tax returns, ACRA filings, corporate obligations, and employee reporting.

Call to Inquire

We at FAST ACCOUNTING can assist businesses in Singapore to manage tax filing, corporate compliance requirements, and accounts throughout the year. If your company needs help in tracking compliance dates that companies must meet, we have a team of experts and corporate secretarial professionals who can assist you in staying compliant and file on time. Reach out to us today to learn more about corporate secretarial services.