Tax guide for registering a company in Singapore Singapore has a world-class port and international airport，With perfectly developed tourism、communication、finance、Education and the Free Economic System，It seems that Singapore has become the most popular international city for investors from all over the world.，Registered companies or offices in Singapore one after another。
When registering a company in Singapore, you must have a good understanding of Singapore company tax policies.，Especially for registering a Singapore company，Where do we start to understand the taxation of registered companies in Singapore? For today’s consultation, let’s share with you the tax guide for newly registered companies in Singapore~~Absolutely useful information，Worth collecting! !
- Introduction to corporate income tax The income to be assessed in an assessment year refers to the company’s total income in the previous financial year.。
For example：If your company's financial year ends on December 31，Then the income that needs to be assessed in the assessment year 2026 is the income between January 1, 2026 and December 31, 2026.。 If your company's financial year ends on March 31，Then the income that needs to be assessed in the assessment year 2026 is the income between April 1, 2014 and March 31, 2026.。
The current corporate income tax rate for Singapore companies is 17%。 Attention! Important dates to remember Within three months of the company’s financial year end，Submit Estimated Taxable Income (ECI)。Submit the company's corporate income tax form (Form C-S) before November 30 each year / C）。If you are using the electronic filing format Form C-S / C，Deadline is December 15th each year。
- Company documents that need to be kept Your company must have a suitable system in place to keep records of the company’s business transactions。Records must be maintained for at least 5 years from the corresponding assessment year，and according to IRAS
Require
Search。 For example，Your records for the financial year January 1, 2026 to December 31, 2026 (FY2026) should be maintained until December 31, 2026。
Files to retain include： Source document，For example, invoice，Receipts and vouchers Accounting records and schedules，For example, general ledger and sales list, bank statements and bank notes, any other business transaction records
- Tax forms that companies need to submit every year
- Estimated Taxable Income Form (ECI)
- Corporate Income Tax Form - Form C-S/C Today's consultation will first explain to you in detail the estimated taxable income form (ECI). The estimated taxable income is an estimate of the company's taxable income (after deducting allowable tax expenses).。
The Estimated Taxable Income Form must be submitted to the Inland Revenue Authority of Singapore within three months of the company’s financial year end。 For example，If the company is established in 2026，Its financial year end is December 31, 2026，The company must then submit an estimated taxable income form to the Inland Revenue Authority of Singapore by 31 March 2026 for the financial year ending 31 December 2026.。
1 year after the establishment of the company，The Singapore Inland Revenue Authority sends a notice to companies every year in the last month of the company’s financial year，so that the company can complete and submit an estimated taxable income form。 If your company has not received a notification from the Inland Revenue Authority of Singapore，Please complete the Estimated Taxable Income Form within three months after the end of the company's financial year。
The following companies are not required to submit an income statement with estimated tax
- Estimated taxable income does not exist
- Annual income does not exceed S$1 million Tips：If the company electronically completes the Estimated Taxable Income Statement and pays via GIRO，Then the company can enjoy 10 monthly installments。 After you submit your company’s estimated taxable income，You will receive an assessment notification by mail。
You can also view assessment notices in myTax Portal。Income tax must be paid within one month from the date shown on the assessment notice。
- Tax forms that companies need to submit every year
- Corporate Income Tax Form-Form C-S/C In addition to filling in the estimated taxable income，You must also declare your company's actual income in your corporate income tax form each year。
Even if your company is losing money，You still need to fill out a corporate income tax form。 There are two forms of corporate income tax forms: Form C-S and Form C.，Form C-S is much shorter，and easy to fill in。You can fill in Form C-S if the following conditions are met:：
- The company was established in Singapore，Annual income does not exceed S$1 million，The income tax rate the company needs to pay is the current corporate tax rate。
- Companies are not required to declare offset losses for the current year、Group relief、investment allowance、R&D tax relief、Sources of Foreign Tax Credits and Deductions。 You can enjoy the following benefits by filling in your corporate income tax form electronically： Additional 15 days to complete Guidance every step Automatic correction of some content to minimize errors Ability to save drafts to estimate tax due on the spot Get instant confirmation upon successful electronic completion。
After submitting Form C-S/C，The Inland Revenue Authority of Singapore will send you a tax notice。It will explain whether your company needs to pay more tax，Do you need a refund from the Singapore Inland Revenue Authority?，or no change。 Any additional tax must be paid within one month from the date shown on the assessment notice。
If you disagree with the tax position shown in the Notice of Assessment，Please notify the Inland Revenue Authority of Singapore by completing the Notice of Objection within two months from the date the tax notice appears.。You will also need to give your reasons for disagreeing with the assessment notice。
- Electronic Services myTaxPortal is a secure platform，Provide 24/7 tax services。
Many taxpayers prefer to use these electronic services to collect taxes，and check its transaction status。Before you access electronic services in myTax Portal，You must authorize your services through the Electronic Services Authorization System、Your employee or third party (your tax agent) logs into the system。
to this end，Please have the following ready： Company’s tax identification number Company’s electronic services access code Personal tax identification number SingPass or Singapore Inland Revenue Authority PIN
- Common tax reliefs for the company’s first three consecutive years of tax assessment，Eligible companies can enjoy： Full tax relief for the first S$100,000 and 50% tax relief for the next S$200,000。
From the fourth year onwards，Just proceed as follows，Get 75% tax deduction on the first S$10,000，Get 50% tax relief on the next S$290,000。 This method is applicable to all companies except those applying for the Start-up Tax Exemption Scheme for newly established companies.。 Please pay attention! ! ! It is illegal to abuse this policy to obtain tax relief through shell companies! ! !
The above is the tax guide for registering a company in Singapore，If you still have any questions you need to know，Consultation can answer your questions。
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