IRAS-Compliant · ECI · Form C-S · GST · Company Tax Service
Corporate Income Tax Singapore Save Up to 75% with Expert Filing
Corporate income tax Singapore obligations become manageable with Savvilio’s trusted taxation service Singapore businesses rely on. Our IRAS-accredited advisors handle your ECI, Form C-S, and GST, so you pay only what you legally owe.
Corporate Tax Rates In Asia
Singapore Has One of Asia's Most Competitive Tax Rates
Singapore’s territorial tax system and 17% headline rate are just the starting point. For new companies, the Start-Up Tax Exemption (SUTE) reduces your effective rate to as low as 4.25% on your first S$100,000 of chargeable income. Working with a professional company tax service from incorporation means you never miss an exemption and never face an avoidable IRAS penalty.
✓ Save up to 75% — on your first S$100K profits using SUTE exemption
✓ IRAS-accredited advisors — ECI, Form C-S & GST filing fully handled for you
✓ Budget 2026 CIT Rebate — 50% rebate (up to S$40,000) applied to every filing
✓ Fixed-fee annual packages — no hidden fees, no surprises at year-end
4.5 / 5.0 · Trusted by 500+ Singapore businesses
17%
Headline corporate tax rate
4.25%
Effective rate
(SUTE, first S$100K)
9%
Current GST rate
(from Jan 2024)
3 months
ECI deadline after financial year end
30 Nov
Annual corporate tax return deadline
Singapore Tax System
Understanding Corporate Income Taxation
in Singapore
Singapore runs on a territorial tax system, meaning companies are only taxed on income sourced in Singapore or on foreign income brought back here. The headline corporate income tax Singapore rate is 17%, which is already one of Asia’s most competitive. Most SMEs working with a professional company tax service end up paying significantly less thanks to IRAS exemptions. Savvilio’s taxation service makes sure your business pays only what it legally owes.
Territorial Tax System
Only income sourced in Singapore, or foreign income remitted here, is taxable. Foreign-sourced dividends, branch profits, and service income may qualify for exemption under Section 13(8) when tax has already been paid in the source country at ≥15%.
IRAS Administration
The Inland Revenue Authority of Singapore (IRAS) administers corporate tax, GST, and related obligations. All Singapore-incorporated companies must file Estimated Chargeable Income (ECI) within 3 months of their financial year end. Missing this window triggers an automatic unfavourable assessed estimate from IRAS.
Tax Filing Forms
Form C-S applies to companies with annual revenue ≤ S$5 million. Form C-S (Lite) for revenue under S$200,000. Form C for larger companies. All returns are due by 30 November annually, regardless of when your financial year ends.
Merging & Acquisition Tax
Singapore offers specific tax relief schemes for qualifying M&A transactions, including the M&A Allowance of 25% on qualifying acquisition costs (capped at S$40M). Savvilio advises on pre-acquisition tax due diligence and post-merger structuring.
Filing Deadlines
IRAS Filing Deadlines & Tax Obligations
Missing any corporate income tax Singapore deadline brings automatic penalties, and the estimated assessments IRAS issues when you miss them are almost always unfavourable to your company. Savvilio manages every deadline in your annual tax cycle.
Filing Obligation
Deadline
Who Must File
Penalty / Consequence
Savvilio Manages
Estimated Chargeable Income (ECI)
3 months after FYE
All companies (unless exempted)
Unfavourable estimated assessment
✓ Included
Form C-S (revenue ≤ S$5M)
30 November annually
Qualifying SMEs
Composition penalty
✓ Included
Form C (revenue > S$5M)
30 November annually
Larger companies
Composition penalty
✓ Included
GST Return (Form F5)
1 month after GST quarter-end
GST-registered companies
Late penalty + interest
✓ Add-on
GST Registration
Within 30 days of S$1M threshold
Companies crossing S$1M turnover
Back-dated GST liability
✓ Advisory
Transfer Pricing Documentation
By filing deadline
Related-party transactions above thresholds
Surcharge + adjustment
✓ Add-on
Tax Exemptions
Singapore Corporate Tax Exemptions:
How Much Can You Save?
Most companies with corporate income tax Singapore obligations qualify for significant relief through one of two IRAS exemption schemes. Savvilio’s tax advisors assess your eligibility from incorporation and structure your filings to maximise available exemptions.
Start-Up Tax Exemption (SUTE)
First 3 Years of Assessment · New Singapore-Incorporated Companies
First S$100,000 chargeable income: 75% exemption
Next S$100,000 chargeable income: 50% exemption
Effective rate on first S$200,000: ~4.25%
Max shareholders: 20 (≥1 individual >10%)
Excluded: Investment holding, property dev
⚠️ SUTE applies only for the first 3 consecutive Years of Assessment from the first year the company has chargeable income.
Partial Tax Exemption (PTE)
All Singapore Companies Not Qualifying for SUTE
First S$10,000 chargeable income: 75% exemption
Next S$190,000 chargeable income: 50% exemption
Effective saving on first S$200,000:
Up to S$102,500
Applies to: All Singapore resident companies
Duration: Ongoing (no time limit)
✅ PTE is available every year of assessment, even after your SUTE has expired. Savvilio ensures you transition correctly and never lose exemption entitlements.
Budget 2026 Update
Budget 2026: Corporate Income Tax Rebate
— Are You Claiming It?
The Singapore Government’s Budget 2026 introduced an enhanced Corporate Income Tax (CIT) Rebate for Year of Assessment 2026. Many SMEs are leaving thousands of dollars on the table by not claiming it correctly. Savvilio makes sure your company gets every dollar it is entitled to.
50% CIT Rebate
For YA 2026, qualifying companies receive a 50% rebate on corporate tax payable, capped at S$40,000 per company.
Minimum S$1,500 Cash Grant
Active companies that employed at least one local employee in calendar year 2025 receive a minimum benefit of S$1,500, even if tax payable is zero.
SUTE + PTE Still Apply
The CIT Rebate stacks on top of Start-Up Tax Exemption (SUTE) and Partial Tax Exemption (PTE). Savvilio applies all three to minimise your effective corporate income tax Singapore liability.
Easy to Miss Without an Advisor
Claiming the rebate requires correct tax computation and accurate Form C-S submission. An error means IRAS may not apply the rebate, and you may not notice until your Notice of Assessment arrives.
Is your company getting the 2026 CIT Rebate?
Savvilio reviews your eligibility as part of every tax filing engagement — at no extra cost.
Full Annual Cycle
Our Company Tax Service:
Full Annual Taxation Cycle
Savvilio’s taxation service Singapore covers every step from pre-year-end planning through to IRAS filing and post-assessment support. As your dedicated corporate tax advisor, we ensure full compliance and optimal tax efficiency for your corporate income taxation obligations year after year.
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Pre-Year-End Tax Planning
We review your allowable deductions, capital allowances, available incentives, and projected chargeable income before your financial year closes. Getting ahead of this avoids missed claims and rushed structuring decisions.
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Tax Computation Preparation
Aligned with IRAS guidelines and your audited or unaudited financials. Every deduction verified, every capital allowance tracked, every exempt income correctly treated.
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ECI Preparation & IRAS e-Filing
Estimated Chargeable Income (ECI) filed within the 3-month post-FYE window. A missed ECI triggers an IRAS estimated assessment, which is almost always unfavourable and requires a formal objection to reverse.
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Form C-S / Form C Preparation & e-Filing
Full corporate income tax return prepared and e-filed by the 30 November deadline. Company tax filing in Singapore done correctly, with no arithmetic errors or inconsistencies with your ECI figures that could trigger IRAS flags.
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IRAS Correspondence Management
All IRAS queries, objections, and assessments handled by Savvilio's tax advisors. We respond accurately and promptly, protecting your company's IRAS standing and keeping things from escalating.
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GST Return & Transfer Pricing (Where Applicable)
GST Form F5 quarterly returns filed for GST-registered companies. Transfer pricing documentation prepared for related-party transactions above IRAS thresholds (S$15M for goods, S$1M for non-goods).
Why Compliance Really Matters
Corporate Tax Mistakes Singapore SMEs
Make Most
These are the most common company tax filing mistakes our advisors come across, and the ones most likely to draw IRAS scrutiny, trigger penalties, or result in unfavourable assessments.
Missing the ECI Deadline
IRAS issues an estimated assessment based on prior-year income, which is almost always unfavourable. This assessment stands unless you file a formal objection, which costs time, fees, and cash flow.
Claiming Disallowed Expenses
Private car costs, penalties and fines, non-business meals, and personal expenses disguised as business costs are all non-deductible. IRAS has very specific criteria here, and Savvilio verifies each line item carefully.
Not Tracking Capital Allowances
Equipment, machinery, and qualifying renovation expenditure can be written down over 1, 3, or the useful life of the asset. Untracked capital allowances mean you overpay tax every year.
Ignoring Transfer Pricing Rules
Transfer pricing rules apply to transactions with related entities once thresholds are crossed (S$15M for goods, S$1M for non-goods). Non-compliance triggers IRAS surcharges and mandatory adjustments.
Missing GST Registration
Once annual taxable turnover exceeds S$1 million, GST registration is mandatory within 30 days. Failing to register on time creates a back-dated GST liability, meaning you become liable for 9% GST on revenue you have already received.
Arithmetic Errors in Self-Prepared Returns
IRAS's automated checks flag inconsistencies between ECI and final returns. Even minor differences can trigger queries that escalate into full audits. Savvilio's review process catches these before submission.
GST in Singapore
GST Registration & Compliance in Singapore
Goods and Services Tax (GST) in Singapore is currently 9% (effective January 2024). Savvilio manages GST registration, quarterly Form F5 returns, and advises on special GST schemes for eligible businesses.
9%
Current GST rate (increased from 8% in January 2024)
→ Mandatory registration: S$1M annual taxable turnover
→ Registration must be completed within 30 days of crossing threshold
→ GST returns (Form F5) filed quarterly for most businesses
→ Cash Accounting Scheme available for qualifying SMEs
→ Major Exporter Scheme for high-volume exporters
Voluntary GST Registration: Is It Right for You?
Voluntary GST registration is available below the S$1M threshold. It may be beneficial if:
✓ Your customers are GST-registered businesses (you can claim input tax on expenses)
✓ You have high capital expenditure with significant GST input tax to reclaim
✓ Your suppliers are GST-registered and charging you 9% GST
Savvilio advises on voluntary GST registration eligibility and manages the full IRAS application process.
Savvilio handles end-to-end GST compliance
GST registration with IRAS · Quarterly Form F5 preparation and e-filing · Cash Accounting Scheme assessment · Major Exporter Scheme advise · GST health checks and pre-audit reviews. Contact us to assess your GST position.
The Savvilio Difference
Why Choose Savvilio as Your Tax Advisor Singapore Businesses Trust?
Choosing the right tax advisor Singapore companies work with makes a measurable difference at assessment time. Automated platforms look affordable at first glance, but a wrong form type, missed exemption, or late ECI filing triggers real IRAS penalties. Here is how Savvilio’s dedicated taxation service Singapore compares.
Feature
Savvilio
Automated platforms
Dedicated tax advisor — same person every year
✓ Always
Ticketing system / rotated staff
Form selection — C, C-S, C-S Lite, correct every time
✓ Expert review
User self-selects (error risk)
Budget 2026 CIT Rebate applied proactively
✓ Included
Varies (may require add-on)
SUTE + PTE exemption optimisation
✓ Every filing
Partial / optional
IRAS audit defence and query response
✓ Handled
× Not included
GST + transfer pricing advisory
✓ Available
× Separate engagement
WhatsApp / direct advisor access
✓ Direct line
In-app chat / email queue
Switching support from current advisor
✓ Full transition handled
DIY data migration
500+
Companies Filing With Savvilio
0
IRAS Penalties Incurred by Clients
10+
Years of Tax Advisory in Singapore
1 day
Average Response Time to Queries
Frequently Asked Questions
Common Questions About
Corporate Income Tax Singapore
What is the corporate tax rate in Singapore?
Singapore’s headline corporate income tax rate is 17%. However, most SMEs pay significantly less through the Start-Up Tax Exemption (SUTE) or Partial Tax Exemption (PTE). Under SUTE, newly incorporated companies can pay an effective rate as low as 4.25% on the first S$200,000 of chargeable income in their first 3 years of assessment.
When do I need to file my corporate tax return in Singapore?
All Singapore companies must file their Corporate Income Tax Return (Form C-S or Form C) by 30 November each year. Additionally, companies must file their Estimated Chargeable Income (ECI) with IRAS within 3 months of their financial year end. Savvilio manages both deadlines for all clients.
What is the difference between Form C-S and Form C?
Form C-S is a simplified return for companies with annual revenue of S$5 million or below. Form C-S (Lite) is an even simpler version for companies with revenue under S$200,000 and a straightforward tax profile. Form C is the full return required for all other companies. Savvilio determines the correct form for your company annually.
Does my Singapore company need to register for GST?
GST registration is mandatory once your company’s annual taxable turnover exceeds S$1 million. You must register within 30 days of crossing this threshold. Voluntary registration is available below S$1 million. The current taxation service rate for GST is 9% (effective January 2024). Savvilio advises on both mandatory and voluntary GST registration.
Can foreign-sourced income be exempt from Singapore corporate tax?
Foreign-sourced income remitted into Singapore is generally taxable. However, exemptions apply under Section 13(8) of the Income Tax Act when the income has already been taxed in the foreign jurisdiction at a rate of at least 15%, and IRAS is satisfied the exemption is beneficial. Savvilio’s tax advisors assess eligibility for each client’s specific situation.
What business expenses can I deduct for Singapore corporate tax?
Deductible expenses must be wholly and exclusively incurred in producing your company’s income. Common deductions include salaries, CPF contributions, office rental, professional fees, advertising, and capital allowances on equipment. Non-deductible items include private vehicle costs, fines, pre-commencement expenses, and entertainment that does not meet IRAS guidelines.
Can you recommend tax advisory services for corporate income tax in Singapore?
Savvilio provides a comprehensive company tax service covering the full corporate income taxation cycle in Singapore, from Estimated Chargeable Income.
What is the Budget 2026 Corporate Income Tax Rebate and does my company qualify?
For Year of Assessment 2026, IRAS is granting a 50% CIT Rebate capped at S$40,000 per company. If your company employed at least one local (Singapore Citizen or Permanent Resident) employee in calendar year 2025, you also qualify for a minimum cash benefit of S$1,500 — even if you have no tax payable. This rebate is applied automatically against your tax assessment but requires correct Form C-S or Form C submission. Savvilio ensures every eligible client receives the full rebate as part of our standard tax filing service.
Can Savvilio take over my corporate income tax Singapore filing from my current advisor?
Yes. Switching your company’s tax obligations to Savvilio is straightforward. Our team communicates directly with your outgoing advisor to retrieve all relevant financial documents and prior year filings, reviews your historical IRAS correspondence for any outstanding matters, and assumes full responsibility from your next financial year end. Most transitions complete within two to four weeks. There are no penalties or IRAS notification requirements when you switch tax agents in Singapore.
Do I get a dedicated tax advisor or a different person each time?
You get a dedicated advisor who is assigned to your account for the duration of the engagement. They understand your company’s financial structure, exemption history, related-party transactions, and GST position. This continuity matters because corporate income tax Singapore filings build on prior-year positions — a rotating team increases the risk of errors and missed optimisation opportunities. Your advisor is also your direct point of contact via WhatsApp and email, with a one-business-day response commitment.
What happens if my company receives an IRAS query or audit notice?
If IRAS issues a query or initiates a compliance review after we have filed your return, Savvilio handles the response on your behalf at no additional charge. We prepare all supporting schedules, liaise directly with IRAS, and manage the process through to resolution. This is included in every tax filing engagement — unlike some platforms that treat audit defence as a chargeable add-on.
Can you recommend tax advisory services for corporate income tax in Singapore?
Yes. Savvilio is a full-service taxation service Singapore companies use for all aspects of corporate income taxation — from ECI preparation and Form C-S filing through to GST compliance, IRAS query management, and Budget 2026 CIT Rebate optimisation.
What sets Savvilio apart as a tax advisor Singapore SMEs recommend is the combination of a dedicated advisor (same person every year), fixed-fee pricing with no surprises, and a zero-penalty track record across 500+ client engagements. We handle company tax filing Singapore requirements end-to-end so directors can focus on running the business, not navigating IRAS deadlines.
To discuss your corporate income taxation position and get a fixed-fee quote for our company tax service, book a free consultation here.
Singapore's tax system works in your favour, but only if you're doing it right.
We handle everything from computing your tax liability to filing corporate income tax returns with IRAS, managing ECI submissions, and liaising on assessments and correspondence, so nothing gets missed and nothing gets late.
Your deductions are applied correctly, your computations align with your financial statements, and your filings hit every IRAS deadline, keeping you compliant while making the most of what you’re legitimately entitled to.
What’s Included in Corporate Taxation
Tax Liability
We calculate your corporate tax liability accurately against your financial statements, ensuring every eligible deduction and allowance is applied correctly within IRAS guidelines.
Prepare and File Corporate Income Tax Returns with IRAS
We prepare and submit your Form C or Form C-S along with all supporting schedules, filed accurately and on time, every year.
Manage Estimated Chargeable Income Submissions
We manage your ECI submission within the required window, ensuring the figures reported reflect your actual financial position, keeping you clear of unnecessary penalties.
Tax Assesssments and Correspondence
If IRAS raises a query, issues an assessment, or requests clarification, we handle all correspondence on your behalf, documented clearly and resolved efficiently.
