From ECI to Form C-S or C, our qualified accountants prepare and file your corporate tax with IRAS accurately and on time.
Anton Blockx | Finance Controller at the Board of Innovation APAC Pte Ltd
Best for: Founders who only need company registration and basic compliance
Best for: Businesses that want accounting and tax handled from the start.
Best for: Businesses that need full compliance plus a Singapore registered address
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| Sleek | DIY filing | |
| Deadline tracking | All deadlines tracked. Alerts sent before each. | Manual calendar. Director responsible. |
| IRAS liaison | Tax advisor handles IRAS on your behalf. | You draft and send every response. |
| Cost certainty | Fixed annual fee, shown before you sign. | Hours of founder time + variable accountant fees. |
| Penalty risk | Managed. Qualified ACCA/CA accountant on file. | High if any form or figure is missed. |
| Year-end prep time | Minimal. Books and tax already aligned. | 3-6 weeks coordinating separate parties. |
Tax Manager
Singapore
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Tax filing is included in all Sleek accounting plans. The Annual Filing & Bookkeeping plan starts from S$68/mo (billed annually), which covers ECI, Form C-S or C, and your annual bookkeeping. For expenses above S$900,000 per year, pricing is on a custom quote basis.
Yes. Every plan covers both filings: the Estimated Chargeable Income (ECI), due within three months of your financial year-end, and the annual Corporate Income Tax Return (Form C-S, C-S (Lite), or C depending on your revenue), due by 30 November each year.
ECI must be filed within three months after your financial year-end. The annual tax return (Form C-S or C) is due on 30 November for Year of Assessment 2025. If you are on a Sleek plan, we track both deadlines for you and file before each one.
Yes. Your dedicated tax advisor handles routine IRAS correspondence and queries directly. If IRAS issues a Notice of Assessment that needs a formal objection or clarification, we manage that process and keep you informed at each step.
Yes. Xero is fully integrated on the Accounting Premium plan, and Sleek is a Xero Platinum Partner. If you are already on Xero, your transaction data feeds directly into the tax computation – no manual re-entry, and no gap between your books and your filing.
