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- 2025 Tax Deadlines in Singapore
Key Singapore Corporate Tax Submission Deadlines to Know in 2025
- Modified: 22 May 2025
- 8 min read
- Money Talk
Rodney Wong
Author
Rodney helps customers in Singapore navigate their way through the details and benefits of our products and services, and to see how the application of technology to their needs could be a game changer for their business. A big believer in the power of the written word, he makes tech topics accessible, applicable, but most of all, useful, to encourage entrepreneurs to chase that big idea.
Imran Marican
Reviewer
Imran Marican, ATA SCTP member, is our Corporate Tax Assistant Manager based in Singapore, with almost a decade of experience in Singapore corporate tax. With in-depth knowledge of Singapore corporate tax law and regulations, he can help with corporate tax compliance that matters to every company. While our business writers transform complicated tax jargon into easy-to-understand concepts, as a reviewer for the Osome blog, Imran ensures our content is accurate and relevant, helping our readers boost their businesses with helpful tips and insights.
Rasool Beevi
Reviewer
Rasool Beevi, our Assistant Accounting Operations Manager, plays a key role in maintaining seamless financial operations. With in-depth expertise in accounting processes and compliance, she ensures accuracy and efficiency in financial reporting. While our business writers simplify complex accounting topics, Rasool reviews our content to ensure it remains precise, practical, and valuable for business owners looking to manage their finances effectively.
For many entrepreneurs, tax season is the most dreaded time of the year. While mundane, paying tax is part and parcel of running a business. Here’s the good news – getting a head start on your company tax return deadline for the year can help you be prepared, so you won’t have to be flustered when the deadlines are nearing.
Read on to find out everything you need to know about taxes in Singapore and the key deadlines.
What’s the Deadline for Filing My Corporate Tax?
The Singapore tax calendar can be found below:
Date | What to file |
|---|---|
| 31 January 2025 | Goods and Services Tax (GST) return for companies with FY ending in December |
| 1 March 2025 | Employment income e-submission, Commission e-submission |
| 31 March 2025 | Estimated Chargeable Income (ECI) for companies with FY ending in December (GIRO plan holders have a deadline of 26 March) |
| 15 April 2025 | Individual income tax (paper form) |
| 18 April 2025 | e-File individual income tax |
| 30 April 2025 | Goods and Services Tax (GST) return for companies with FY ending in March |
| 30 June 2025 | Estimated Chargeable Income (ECI) for companies with FY ending in March (GIRO plan holders have a deadline of 26 June) |
| 31 July 2025 | Goods and Services Tax (GST) return for companies with FY ending in June |
| 30 September 2025 | Estimated Chargeable Income (ECI) for companies with FY ending in June (GIRO plan holders have a deadline of 26 September) |
| 31 October 2025 | Goods and Services Tax (GST) return for companies with FY ending in September |
| 30 November 2025 | Corporate Income Tax Return (Form C-S/ Form C-S (Lite)/ Form C) |
| 31 December 2025 | Estimated Chargeable Income (ECI) for companies with FY ending in September (GIRO plan holders have a deadline of 26 December) |
Other key dates to bear in mind:
What | When |
|---|---|
| Annual General Meeting (AGM) | To be held within 6 months from the date of (FYE) |
| Annual return (AR) | To be filed with the Accounting and Corporate Regulatory Authority (ACRA) within 7 months from the date of the FYE |
Looking to simplify your corporate tax filing and bookkeeping? Osome offers expert accounting services tailored for Singapore businesses, ensuring your corporate income tax returns and filings are accurate and submitted on time. Contact us today!
Who Needs To File Company Tax in Singapore?
Under the Income Tax Act, all companies will have to pay corporate taxes, regardless of their tax residency status. Any chargeable income acquired from Singapore, or foreign-sourced income that’s remitted to Singapore, will have corporate tax imposed.
Singapore tax resident companies benefit from some exemptions and incentives that are not offered to non-tax resident companies.
If you run an ecommerce business in Singapore, you are still required to pay taxes. Additionally, freelancers and self-employed individuals will also have tax obligations.
Understand Singapore taxes at a glance
Our free guide breaks down Singapore’s tax rates, employee-related taxes, and the exemptions and reliefs your business may qualify for — clearly and simply
When Do I File Company Tax?
The income your company makes in a financial year (FY) will be assessed and taxed in the next year. The following year is also known as the Year of Assessment (YA). After the end of your company’s FY, you will have to prepare your company’s accounts and tax returns.
To determine your company's financial year, you can choose a financial year-end (FYE). In Singapore, the FYE can be any given date in the calendar year.
To simplify things, most companies pick 31 December to be the FYE. Other typical options are the last day of every quarter. If your FYE is not 31 December, then you will have to inform the Inland Revenue Authority of Singapore (IRAS). See the example below.
Financial Year-End | Financial Year | Year of Assessment |
|---|---|---|
| 30 Jun | 1 Jul 2023 - 30 Jun 2024 | 2025 |
| 30 Sep | 1 Oct 2023 - 30 Sep 2024 | 2025 |
| 31 Dec | 1 Jan 2023 - 31 Dec 2024 | 2025 |
What Are Singapore’s Corporate Income Tax Rates & General Tax Exemptions?
Headline Corporate Tax Rate
To position Singapore as an attractive destination for investment, the income tax rates in Singapore have been declining consistently. The headline corporate tax rate in Singapore is currently at a flat 17%, a steep decrease from 26% in 1997 to 2000.
However, the headline corporate tax rate does not always accurately reflect its effective corporate tax rate. Due to tax incentives, tax exemptions, depreciation rules, and other factors, the effective corporate tax rate is usually lower than the headline corporate tax rate.
General Tax Incentives
Once tax exemptions are applied to small and medium-sized enterprises' (SMEs) taxable income, the effective income tax rate becomes significantly reduced.
From YA 2022 onwards, newly incorporated companies enjoy the following tax exemptions for the first three consecutive YA:
75% exemption on the normal chargeable income's first S$100,000.
Companies that are newly incorporated will be exempted from 75% of the corporate income tax rate on the first S$100,000 taxable income for the first three tax filing years.
An additional 50% tax exemption on up to S$100,000 of taxable income
Companies that are newly incorporated can also enjoy an additional partial exemption – approximately an 8.5% tax rate on taxable income up to S$100,000 a year. Taxable income above S$100,000 will incur the usual 17% headline corporate tax rate.
To qualify for these exemptions, companies must meet the following conditions:
- They are a tax resident in Singapore.
- The company is incorporated in Singapore.
- The company has 20 or fewer shareholders, of which at least one shareholder is an individual shareholder with at least 10% of shares.
Annual return filing made easy
Keep your Singapore business on track with our comprehensive annual return filing services. From preparing financial statements to conducting your company's AGM, we've got you covered.
Which Type of Tax Return Do You Fall Into?
There are two types of tax returns for tax filing in Singapore, namely the Estimated Chargeable Income (ECI) and Form C/C-S/C-S Lite.
1 Estimated Chargeable Income (ECI)
ECI is an estimate of your company's profits that will be taxed after deducting tax-allowable expenses. Your company will also have to state its revenue along with ECI.
Companies can be exempted from ECI filing if they fulfil these conditions:
- The FY’s revenue is no more than S$5,000,0000
- The ECI is nil in the YA
If your company meets the conditions, you do not have to inform IRAS that you will not be filing ECI.
2 Form C-S/C-S Lite/C
Form C-S/C-S Lite/C is a Corporate Income Tax Return for the declaration of your company's actual income. Compared to the ECI report, this form gives a more detailed breakdown of your company's financial health. After your company's FY ends, you will have 11 months to prepare and file the respective form with IRAS.
Form C-S | Form C-S (Lite) | Form C | |
|---|---|---|---|
| What | Simplified form compared to Form C, with half of Form C's fields to complete. Form C-S allows SMEs in Singapore to simplify company tax filing. | Introduced in 2020, Form C-S Lite is the simplest Singapore tax return available, with only 6 main fields. This helps to further alleviate the chore of SME filing corporate tax in Singapore | Companies not eligible for Form C-S or Form C-S Lite will have to file Form C |
| Qualifying companies | Companies incorporated in Singapore, with an annual revenue of S$5 million or below | Companies incorporated in Singapore, with an annual revenue of S$200,000 or below | All companies |
| Supporting documents | Submission of financial statements and tax computations not is required | Submission of financial statements and tax computations is not required | Submission of financial statements and tax computations is required |
How Do I File Tax Returns in Singapore?
To file corporate tax in Singapore, simply follow these steps:
- Log in to MyTax Portal along with your company’s CorpPass. You can file the tax returns by yourself, or authorise your staff or a third party in CorpPass to grant them access to file taxes on your company's behalf. You or any authorised person will then have to verify through SMS (or OneKey Token).
- Follow the instructions given by IRAS to file ECI or Form C-S/C.
- Click on "Corporate Tax" on the menu bar, and select "File ECI" or "File Form C-S/C".
- Follow the instructions provided by IRAS, and begin your filing process.
What Do I Do After Filing Tax Returns?
By 31 May the following year, IRAS will send you the Notice of Assessment (NOA) after reviewing your company's tax returns. This NOA provides a detailed statement of your company’s tax liabilities as well as an opportunity for your company to object to IRAS’ tax assessment if you wish to do so.
If there are no issues, you will have to pay the corporate tax within 30 days from the NOA's date. This can be done through interbank GIRO, cheque, telegraphic transfer, or internet banking.<br>
What Are the Penalties for Late or Non-Payment of Tax?
Late payment of corporate tax may lead to a 5% penalty, and further 1% penalties for every month that tax remains unpaid, up to a 12% penalty. Additionally, IRAS could take legal action or further enforcement to recover the unpaid tax.
In the event of tax evasion, when someone deliberately gives the IRAS inaccurate or incomplete information about company activities to reduce tax liability or get undue tax credits and refunds, an investigation will be launched.
Tax evasion is a serious criminal offence, and investigations may take 15 to 24 months. Investigations may involve surprise searches or visits to residences and company premises to dig up accounting records and relevant documents. Findings discovered during investigations will be discussed with the company in question, through meetings arranged by IRAS. Penalties may then be imposed accordingly, factoring in the company's investigation cooperativeness and whether there was an intention to evade taxes.
In situations where there was an intention to evade taxes, penalties could include:
- Up to S$50,000 in fines
- Up to 400% of the tax is undercharged in financial penalties
- Up to 5 years imprisonment for the relevant individual
How To Stay Compliant When Managing a Business
Running a business is a feat – there are so many things to take care of, from branding, marketing, to staying compliant with the law.
You don’t have to do everything by yourself. Enter Osome, the answer to all your accounting woes. You will have a Chartered Accountant, who will be your advisor, your point of contact, and the one in charge. In a nutshell, Osome will track tax return deadlines, suggest tax exemptions, and highlight issues in the reports, so you have more time to focus on your core business at hand.