Corporate Tax Services in Singapore
Simplifying corporate tax, compliance and incentives for businesses in Singapore
Key numbers every Singapore company director should know
Singapore corporate tax services cover two things: making sure your company pays the right amount of tax, and making sure it does so on time. Terra Advisory Services handles both — from your annual ECI filing through to Form C-S preparation and IRAS liaison — so you can focus on running the business.
Singapore's corporate income tax rate is a flat 17%. That is already one of the lowest in Asia. However, most small and newly incorporated companies pay significantly less than that in practice — because of the start-up tax exemption, partial tax exemption, and the YA 2026 CIT rebate. Understanding which exemptions apply to your company is where the real savings are.
This guide explains how Singapore corporate tax works, what you need to file, when the deadlines fall, and exactly what Terra Advisory Services does for you. If you have just incorporated a Singapore Pte. Ltd., this page covers everything you need to know about your first tax year.
How Singapore Corporate Tax Works
A flat rate, a territorial system, and no capital gains tax. Here is what that means for your company.
Singapore taxes companies on a territorial basis. In plain terms, that means your company is only taxed on income earned in Singapore — or foreign income that is brought into Singapore. Income that stays offshore is not taxed here. This is a significant advantage for companies with international operations.
There is also no capital gains tax in Singapore. If your company sells shares, property, or other assets and makes a profit, that gain is generally not taxable — as long as the transaction is a capital gain rather than trading income. In practice, the distinction matters, so it is worth checking with Terra Advisory Services if you are planning a significant disposal.
Corporate income tax is assessed on a preceding year basis. That means the tax you pay in 2026 is based on your company's financial results for the year ending in 2025. IRAS assesses each company's tax liability based on the income it earned in the preceding financial year.
What counts as taxable income?
Generally, all income your Singapore company earns from its trade or business is taxable. That includes revenue from sales, service fees, rental income from Singapore properties, and interest on business deposits. On the other hand, foreign-sourced dividends, branch profits, and service income may qualify for exemption under specific conditions set by IRAS.
Expenses that are wholly and exclusively incurred in producing that income are deductible. This includes salaries, rent, professional fees, and depreciation on qualifying assets. As a result, your taxable income — known as your chargeable income — is usually lower than your gross revenue.
Tax Exemptions — How New and Established Companies Pay Less Than 17%
Two schemes reduce your effective tax rate significantly. Most Singapore SMEs benefit from at least one of them.
Start-Up Tax Exemption (SUTE) — Years 1 to 3
If your company is newly incorporated, you are likely eligible for the Start-Up Tax Exemption (SUTE). This applies for the first three years of assessment. It gives you a 75% exemption on the first S$100,000 of chargeable income, and a 50% exemption on the next S$100,000.
In practice, that means a company with S$200,000 of chargeable income in its first year pays tax on only S$75,000 — an effective rate well below 10%. Here is how the numbers work out:
SUTE worked example — S$200,000 chargeable income
To qualify for SUTE, your company must be incorporated in Singapore, be a tax resident, and have no more than 20 shareholders — of whom at least one is an individual shareholder holding at least 10% of the shares. Investment holding companies and property developers do not qualify.
Partial Tax Exemption (PTE) — From Year 4 onwards
Once a company is no longer eligible for SUTE, it moves on to the Partial Tax Exemption (PTE). This is available to all Singapore-resident companies indefinitely. It gives a 75% exemption on the first S$10,000 of chargeable income, and a 50% exemption on the next S$190,000.
So even a well-established company with S$200,000 of annual profit pays an effective rate below 17%. The PTE is automatic — you do not need to apply for it separately.
Your Two Annual Tax Filing Obligations — ECI and Form C-S
Every Singapore company files two corporate tax returns each year. Missing either one attracts penalties.
Many directors are surprised to learn there are two separate returns to file each year — not one. They serve different purposes and have different deadlines. Understanding both is essential.
Filing 1 — Estimated Chargeable Income (ECI)
The ECI is a preliminary estimate of your company's taxable income for the financial year just ended. IRAS requires you to file it within three months of your financial year-end. So if your financial year ends on 31 December, your ECI is due by 31 March.
The ECI does not need to be exact. However, it should be a reasonable estimate based on your management accounts. Filing early — before the deadline — also qualifies your company for an instalment plan on any tax payable, which helps with cash flow. That is one practical reason not to leave it until the last minute.
Some companies are exempt from filing ECI — for example, those with annual revenue of S$5 million or below and a nil ECI. Terra Advisory Services will confirm whether your company qualifies for this exemption.
Filing 2 — Form C-S, Form C-S Lite, or Form C
This is your company's actual corporate income tax return for the year. It is due by 30 November every year. Which form you file depends on your annual revenue:
| Form | Who it applies to | Financial statements required? |
|---|---|---|
| Form C-S Lite | Revenue S$200,000 or below; meets Form C-S criteria | Not required to attach |
| Form C-S | Revenue S$5 million or below; income taxed at 17%; no complex claims | Not required to attach |
| Form C | Revenue above S$5 million, or company has complex tax claims | Must attach financial statements and tax computation |
For most Singapore SMEs, Form C-S is the right form. It is simpler and does not require you to attach your financial statements. However, you still need to have those statements prepared and available — IRAS may request them at any time. That is why financial statement compilation and tax filing go hand in hand.
Corporate Tax Deadlines at a Glance
Two returns, two deadlines. Missing either one starts the penalty clock immediately.
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3 months after FYE
ECI Filing Submit your Estimated Chargeable Income to IRAS. File early to qualify for an instalment plan on tax payable. Late filing attracts a composition penalty from IRAS.
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30 November
Form C-S / Form C-S Lite / Form C Your annual corporate income tax return. The same deadline applies to all companies regardless of financial year-end. Late filing results in estimated assessments and penalties.
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5 months after FYE
Annual Return to ACRA Separate from IRAS — this is your company's annual return filed with ACRA, accompanied by your compiled financial statements. Late filing attracts a S$300 penalty. See annual compliance for full details.
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1 month after AGM
Annual Return lodgement window For companies that hold an AGM, the annual return must be lodged within one month of the AGM date. The AGM itself must be held within six months of the financial year-end.
CIT Rebate — 40% off your tax bill for YA 2026
The Singapore government announced a 40% corporate income tax rebate for the Year of Assessment 2026. The rebate is capped at S$30,000 per company.
On top of that, active companies that employed at least one local employee during calendar year 2025 receive a minimum cash grant of S$1,500 — even if the company made a loss and has no tax payable. You do not need to apply. IRAS applies both automatically based on your tax return and CPF records.
This rebate applies on top of any existing exemptions — SUTE, PTE, and other deductions are computed first, and the rebate is then applied to the resulting tax figure.
Capital Allowances and Deductions — Reducing Your Taxable Income Legally
Singapore's tax rules allow several deductions that reduce your chargeable income before the 17% rate applies.
One of the most useful is capital allowances. When your company buys equipment, machinery, or other qualifying fixed assets, you can claim the cost as a tax deduction — either over three years, over one year for certain items, or as an accelerated write-off in some cases. This directly reduces your chargeable income.
Beyond capital allowances, there are several other deductions worth knowing about:
- Section 14C/14D deductions — for expenses on approved trade fairs, trade missions, and international market development
- Double Tax Deduction for Internationalisation (DTDi) — 200% deduction on qualifying overseas expansion expenses, expanded further under Budget 2026
- Research and Development (R&D) deductions — enhanced deductions for qualifying R&D expenditure
- Startup costs — certain pre-commencement expenses can be deducted in the first year of trading
Correctly claiming these deductions requires an accurate tax computation — which is exactly what Terra Advisory Services prepares as part of your annual corporate tax engagement. Overclaiming deductions is an IRAS audit risk. Underclaiming costs you money. Getting it right matters in both directions.
What Terra Advisory Services Handles for Your Corporate Tax
One firm, one point of contact, everything covered.
Terra Advisory Services provides Singapore corporate tax services for private limited companies — from newly incorporated start-ups filing their first return through to established SMEs and foreign-owned entities with more complex positions. Here is what we cover:
Tax Computation
We prepare your annual tax computation — starting from your financial statements, adjusting for non-deductible items, applying capital allowances, and arriving at your chargeable income. This forms the basis of both your ECI and your Form C-S or Form C.
ECI Filing
We file your Estimated Chargeable Income with IRAS within the three-month deadline. Filing early means you qualify for IRAS's instalment plan — useful if there is a tax liability to manage. We track your financial year-end and remind you well in advance.
Form C-S / Form C Preparation and Submission
We prepare and submit your annual income tax return by 30 November. For most SMEs that is Form C-S. We check that all exemptions — SUTE, PTE, and any available deductions — are correctly applied before submission.
IRAS Liaison
If IRAS raises a query, requests supporting documents, or issues a revised assessment, Terra Advisory Services handles the correspondence on your behalf. You do not need to navigate IRAS's processes directly.
Exemption and Rebate Review
We check that your company is claiming every exemption it is entitled to — SUTE in years 1 to 3, PTE thereafter, and the YA 2026 CIT rebate. Small errors here compound across multiple years.
Foreign-Owned Company Tax Positions
Foreign directors and shareholders often have questions about double taxation treaties, withholding tax on dividends, and how Singapore tax interacts with their home country obligations. Terra Advisory Services advises on the Singapore side of those questions.
Frequently Asked Questions — Singapore Corporate Tax 2026
Singapore's corporate income tax rate is a flat 17% on chargeable income. However, most companies — especially new ones — pay significantly less. The Start-Up Tax Exemption gives newly incorporated companies a 75% exemption on the first S$100,000 of chargeable income in each of the first three years of assessment. After that, the Partial Tax Exemption continues to reduce the effective rate. On top of all that, the Budget 2026 CIT Rebate gives all active companies a 40% rebate on their tax payable for YA 2026, capped at S$30,000.
ECI stands for Estimated Chargeable Income. It is a preliminary estimate of your company's taxable profit for the financial year just completed. IRAS requires every company to file ECI within three months of its financial year-end. For example, if your financial year ends on 31 December, your ECI deadline is 31 March. Filing on time — or early — also qualifies your company for an instalment payment plan on any tax due, which helps spread the cash outflow. Some companies are exempt from filing ECI if their annual revenue is S$5 million or below and their ECI is nil. Terra Advisory Services will confirm your position.
It depends on your annual revenue. Form C-S Lite is for companies with revenue of S$200,000 or below. Form C-S is for companies with revenue of S$5 million or below, where income is only taxed at the standard 17% rate and there are no complex tax claims. Form C is for larger companies or those with complex situations — and it requires full financial statements and a tax computation to be attached. The deadline for all three is 30 November every year. Terra Advisory Services will identify the correct form for your company and handle submission.
Yes — filing is mandatory regardless of whether your company made a profit or a loss. In fact, filing your tax return when you have a loss is important because it locks in that loss for carry-forward purposes. IRAS allows Singapore companies to carry forward unused losses indefinitely to offset future profits — which reduces your tax bill in profitable years. You also qualify for the Budget 2026 minimum cash grant of S$1,500 if your company employed at least one local employee in calendar year 2025, even with a nil tax payable.
Missing the ECI deadline or the 30 November Form C-S deadline attracts penalties from IRAS. For late ECI, IRAS typically issues a composition amount. For late Form C-S or Form C, IRAS may issue an estimated assessment — which is often higher than your actual liability — and impose penalties on top of that. Persistent non-compliance can result in IRAS summons. The good news is that Terra Advisory Services tracks all deadlines for every company we work with. You will not miss a filing while we are managing your tax obligations.
Singapore uses a territorial tax system, which means foreign income is generally not taxable here — unless it is remitted into Singapore. However, there are important exceptions. Foreign-sourced dividends, branch profits, and service income remitted into Singapore may qualify for exemption under Section 13(8) of the Income Tax Act — but only if certain conditions are met, including the income being subject to tax in the foreign country at a headline rate of at least 15%. If your company regularly receives income from overseas, it is worth reviewing the position carefully. Terra Advisory Services handles the Singapore side of this analysis.
Yes. Terra Advisory Services works with foreign directors and shareholders across multiple time zones. Everything — ECI filing, Form C-S preparation, tax computation, and IRAS correspondence — is handled digitally. You do not need to be physically present in Singapore. Many of our clients are overseas founders who incorporated a Singapore Pte. Ltd. to access the region, and who manage their company's compliance entirely remotely. If you also need an Employment Pass to work in Singapore, Terra Advisory Services handles immigration as well.
The three are closely linked. Your tax computation starts from your compiled financial statements. Your ECI is based on those same figures. And your annual return to ACRA — filed within five months of your financial year-end — includes the financial statements as an attachment. When Terra Advisory Services handles your accounting, compilation, and tax filings together, nothing falls through the gaps. The numbers are consistent across all three submissions, and all deadlines are tracked in one place.
Let Terra Advisory Services Handle Your Corporate Tax
ECI, Form C-S, tax computation, exemption review, and IRAS liaison — all in one engagement. Transparent pricing. Same-day responses.