At AccountingFirm.sg, we offer expert corporate tax filing services in Singapore to help companies stay compliant with Inland Revenue Authority of Singapore (IRAS) regulations, reduce tax risk, and make the most of tax incentives. Whether you run a startup, SME, or large enterprise, our team ensures your corporate income tax matters are handled with accuracy, timeliness, and full compliance.
With constant changes to tax rules and increased enforcement from IRAS, it is essential to have a trusted corporate tax partner to guide you through the filing process and help you make informed tax decisions.
Why Choose Our Singapore Corporate Tax Filing Services?
1. IRAS-Compliant and Penalty-Free Filing
We stay up to date with the latest corporate tax laws in Singapore and ensure that your Form C-S or Form C is filed correctly and on time to avoid costly penalties.
2. Qualified and Experienced Tax Professionals
Our tax specialists are experienced in working with companies across a wide range of industries and are familiar with various tax treatments, exemptions, and deductions under Singapore’s Income Tax Act.
3. Maximising Tax Incentives and Reliefs
Singapore offers many tax benefits for companies — such as the Partial Tax Exemption (PTE), Startup Tax Exemption (SUTE), R&D tax deductions, and more. We help you claim what you’re entitled to.
4. Strategic Tax Planning
We go beyond tax filing — our corporate tax services also include advisory and planning to help reduce your effective tax rate through legitimate and IRAS-approved strategies.
5. One-Stop Corporate Services
We integrate tax filing with your bookkeeping, accounting, financial reporting, and audit — making compliance seamless, efficient, and worry-free.
Understanding Corporate Tax Filing in Singapore
In Singapore, companies are taxed at a flat rate of 17% on chargeable income. All companies — including private limited companies, foreign subsidiaries, and investment holding companies — must file annual corporate income tax returns with IRAS.
There are two main deadlines to take note of:
- Estimated Chargeable Income (ECI): Must be filed within 3 months from the end of the financial year.
- Form C-S / Form C with tax computations: Due by 30 November each year (e-filing is mandatory).
Failure to comply can result in late filing penalties, enforcement action, and audits from IRAS.
Our Corporate Tax Filing Services
We offer a full range of corporate tax services to support companies in meeting their annual tax obligations efficiently and accurately.
1. Estimated Chargeable Income (ECI) Filing
The ECI is a declaration of a company’s expected chargeable income for the Year of Assessment (YA). We assist with:
- Reviewing and computing your ECI
- Advising on exemptions and thresholds (e.g., the ECI waiver condition)
- Timely submission to IRAS within 3 months of year-end
- Choosing optimal instalment plans for tax payment
Filing your ECI accurately and on time helps in tax budgeting and avoiding unnecessary penalties.
2. Form C-S and Form C Filing
We prepare and file your company’s annual tax return using the appropriate form:
- Form C-S: For companies with straightforward tax matters (revenue ≤ S$5 million and meeting certain conditions)
- Form C: For companies with complex structures, related party transactions, or claiming special deductions
Our service includes:
- Tax computation and schedule preparation
- Compilation of financial statements and supporting documents
- Filing via the IRAS MyTax portal
- Response to IRAS queries or clarifications, if needed
3. Corporate Tax Computation and Schedules
We ensure every allowable tax relief and deduction is correctly applied to reduce your tax burden. Our service includes:
- Calculation of chargeable income
- Depreciation and capital allowance claims
- Deductible business expenses and disallowable items
- Adjustments for prior-year tax issues
- Group relief or carry-forward losses
We take a comprehensive approach to produce IRAS-compliant computations that stand up to scrutiny.
4. Start-Up Tax Exemption (SUTE) and Partial Tax Exemption (PTE) Claims
Singapore’s tax system rewards new and small businesses. We help your business maximise these incentives:
- SUTE: Up to 75% tax exemption on the first S$100,000 of chargeable income (for eligible startups)
- PTE: For all other companies, up to 75% exemption on first S$10,000 and 50% on the next S$190,000
We assess your eligibility, ensure proper declarations, and include all relevant schedules in your tax filing.
5. Corporate Tax Planning and Advisory
Our tax advisory services help your company reduce its effective tax rate and optimise tax positions:
- Reviewing your business structure for tax efficiency
- Planning capital expenditures for maximum allowances
- Claiming R&D tax deductions or Section 14Q renovation deductions
- Structuring employee benefits and director remuneration tax-efficiently
- Transfer pricing advisory and related party transaction compliance
We customise strategies that are practical, compliant, and beneficial to your bottom line.
6. IRAS Audit Support and Tax Query Handling
If your company is selected for an IRAS audit or receives a tax query, our team provides:
- Review of tax positions and supporting documents
- Response drafting and submission to IRAS
- Clarification of tax treatments or calculations
- Mitigation of penalties through voluntary disclosures
Our proactive approach helps you stay prepared and confident in the face of regulatory scrutiny.
7. Filing for Investment Holding and Dormant Companies
Even companies with minimal or no activity need to file tax returns. We assist with:
- Preparation of NIL tax filings
- Application for waiver of filing if eligible
- Filing Dormant Company declarations
- Annual return compliance with ACRA
This ensures your company remains compliant even during inactive periods.
Who Should Engage Corporate Tax Filing Services?
Our services are suited for:
✅ Small and Medium Enterprises (SMEs)
We help SMEs navigate tax complexities and ensure timely filing without overpaying.
✅ Startups and New Companies
Startups can take advantage of exemptions and need proper guidance to stay on track from day one.
✅ Foreign Subsidiaries
We assist MNCs and overseas-owned companies with Singapore tax filing, compliance, and group reporting alignment.
✅ Investment Holding Companies
Even companies with passive income or minimal activity require precise tax treatment and reporting.
✅ Growing Enterprises with Complex Transactions
Companies with multiple revenue streams, cross-border activities, or related party dealings benefit from our strategic tax support.
Benefits of Outsourcing Your Corporate Tax Filing
✅ Risk Reduction
We help you avoid common tax mistakes, over-claims, or omissions that could trigger audits or penalties.
✅ Time and Cost Savings
Save time by letting professionals manage your tax matters so you can focus on growing your business.
✅ Full Compliance
Our services ensure you meet every IRAS deadline with confidence and peace of mind.
✅ Maximise Tax Efficiency
Through strategic planning, we help you reduce tax liabilities legally and ethically.
✅ Integrated with Accounting and Bookkeeping
We ensure consistency and accuracy across your financial reports, accounts, and tax filings — all from one provider.
Our Corporate Tax Filing Process
We make corporate tax filing simple and efficient with our proven workflow:
Step 1: Business and Data Review
We gather and review your financial statements, transaction records, and past filings to understand your tax position.
Step 2: Tax Computation Preparation
We compute chargeable income, assess deductions and exemptions, and prepare the necessary tax schedules.
Step 3: Filing and Submission
We file the ECI and Form C-S/C on your behalf via IRAS’ digital platforms, well before the deadlines.
Step 4: Review and Advisory
We provide a summary of your tax position, tax payable, and any advice on potential improvements or risk areas.
Step 5: IRAS Correspondence and Follow-Up
We handle all post-filing queries, clarifications, or requests for additional documentation from IRAS.
Why Work With AccountingFirm.sg?
- ✔️ Over a decade of experience in Singapore tax filing
- ✔️ Up-to-date knowledge of tax laws and IRAS requirements
- ✔️ Strategic tax planning support
- ✔️ Transparent pricing with no hidden fees
- ✔️ Reliable and responsive team
- ✔️ Integrated accounting, audit, and secretarial services for full compliance
We are committed to helping you manage your corporate tax obligations accurately and efficiently, so you can focus on your business.
Get Started With Expert Corporate Tax Filing
Whether you’re a new business or an established company, accurate and timely corporate tax filing is critical to your success and compliance.
📞 Call Us: +65 9863 8665
📧 Email: Tommyksh@shkoh.com.sg
🌐 Website: https://accountingfirm.sg
Contact us today to schedule a free consultation and learn how our Singapore Corporate Tax Filing Services can support your business.