Tax Advisory Services Singapore

Singapore businesses operate within one of Asia’s most structured tax frameworks. The Inland Revenue Authority of Singapore (IRAS) sets clear compliance obligations, from corporate income tax filing deadlines to GST registration thresholds, and businesses that fail to plan proactively often face avoidable penalties, missed incentives, or costly disputes.

Ledgen Group provides tax advisory services in Singapore for businesses of all sizes. Our team covers the full range of tax obligations: corporate tax planning, GST compliance, transfer pricing advisory, and personal income tax. Whether you are filing for the first time or managing complex cross-border structures, we provide technically sound, commercially relevant advice that holds up under scrutiny.

What Are Tax Advisory Services in Singapore?

Tax advisory services refer to professional guidance that helps businesses and individuals understand, plan for, and comply with Singapore’s tax laws. This goes beyond routine filing. A qualified tax adviser analyses your specific financial position, identifies legitimate ways to reduce tax exposure, and ensures that all IRAS obligations are met accurately and on time.

In Singapore, tax advisory spans several distinct areas.

Corporate income tax. Singapore’s headline corporate tax rate is a flat 17% on chargeable income, applicable to all local and foreign companies. Beyond the headline rate, companies can access start-up tax exemptions, partial tax exemptions, and the annual Corporate Income Tax (CIT) Rebate announced during Budget. For YA 2026, IRAS has granted a CIT Rebate of 40% of tax payable to all taxpaying companies, with a minimum cash benefit of S$1,500 for qualifying active companies that employed at least one local employee in 2025.

Goods and Services Tax. GST applies at 9% as of 2024. Businesses with taxable turnover exceeding S$1 million are required to register. Compliance covers accurate return filing, correct tax treatment of transactions, and managing input tax claims.

Transfer pricing. Related-party transactions between entities in different jurisdictions must be priced at arm’s length under IRAS rules. Mandatory transfer pricing documentation (TPD) is required under Section 34F of the Income Tax Act for companies with annual revenue above S$10 million that exceed IRAS exemption thresholds.

Personal income tax. Applicable to residents, non-residents, and expatriates with Singapore-sourced income, with progressive rates from 0% to 24%.

A tax adviser helps you navigate all of these obligations accurately, while identifying planning opportunities that are legally available to your business.

Why Businesses in Singapore Need Tax Advisory?

Many businesses treat tax as a once-a-year compliance task. That approach is costly. Singapore’s tax framework rewards businesses that plan continuously and penalises those that file reactively.

There are several practical reasons why ongoing tax advisory matters.

Deadlines are firm. Companies must file their Estimated Chargeable Income (ECI) within three months after the financial year-end. The annual income tax return (Form C, C-S, or C-S Lite) is due by 30 November each year. Missing these deadlines triggers late-filing penalties.

Incentives require active application. Tax incentives under schemes such as the Start-Up Tax Exemption (SUTE), the Partial Tax Exemption (PTE), and industry-specific grants do not apply automatically in all circumstances. A tax adviser ensures you capture what you qualify for.

Errors compound. Mistakes in GST returns, incorrect treatment of related-party transactions, or unreported withholding tax obligations can accumulate across multiple years and attract IRAS investigations. Early identification and voluntary disclosure, where appropriate, significantly reduces penalty exposure.

The regulatory environment changes. IRAS released its 8th Edition Transfer Pricing Guidelines in November 2025, introducing a new Simplified and Streamlined Approach (SSA) aligned with the OECD Pillar One Amount B framework, effective January 2026. Businesses with cross-border structures need specialist advice to assess how these updates apply to them.

Growth creates new obligations. Expanding into new markets, acquiring entities, or restructuring ownership can trigger withholding tax obligations, transfer pricing requirements, or stamp duty considerations that businesses without in-house tax expertise often miss.

Tax Risks and IRAS Compliance

IRAS has broad investigative powers and conducts regular audits across both corporate and personal tax. Businesses should be aware of the compliance risks that most commonly attract IRAS attention.

Transfer pricing adjustments. IRAS can adjust reported profits where related-party transactions are not priced at arm’s length. A 5% surcharge applies on upward transfer pricing adjustments. Companies with annual revenue above S$10 million and related-party transaction values exceeding the exemption thresholds are required to maintain contemporaneous transfer pricing documentation, completed before the tax return filing deadline for the relevant Year of Assessment.

GST errors. Incorrect input tax claims, failure to account for imported services, or errors in GST return preparation are among the most common areas IRAS reviews. Businesses with complex transactions in construction, financial services, or cross-border digital services face higher audit risk.

Withholding tax non-compliance. Payments to non-residents, including interest, royalties, management fees, and certain services, are subject to withholding tax. Failure to remit correctly or on time results in penalties.

Incorrect chargeability positions. Treating taxable gains as capital in nature, or claiming deductions for non-allowable expenses, are positions that IRAS may challenge. These require careful documentation and, in some cases, advance rulings to secure certainty.

Record retention. IRAS requires businesses to retain accounting records, invoices, and source documents for at least five years from the relevant Year of Assessment. This retention obligation continues even if a company ceases operations.

Where errors are identified, IRAS operates a Voluntary Disclosure Programme (VDP). Proactive disclosure before IRAS initiates an audit generally results in reduced or waived penalties. Ledgen Group has successfully assisted clients in making voluntary disclosures across GST, withholding tax, and income tax, consistently achieving outcomes that avoided penalties entirely.

Our Tax Advisory Services

Corporate Tax Advisory

Ledgen’s corporate tax advisory service covers the full lifecycle of your company’s tax obligations. We prepare and file Estimated Chargeable Income and annual income tax returns, verify IRAS assessments, and manage objections or appeals where assessments are disputed.

Beyond compliance, we advise on the tax implications of material business decisions: proposed acquisitions, financing structures, mergers and restructuring exercises, and significant contracts. For companies under IRAS investigation or facing queries, we manage the correspondence and resolution process directly.

Our corporate tax scope includes:

• Preparation and filing of ECI and annual income tax returns (Form C, C-S, C-S Lite)
• Verification of IRAS assessments and lodging of objections and appeals
• Handling IRAS investigations and formal queries
• Withholding tax compliance for payments to non-residents
• Voluntary Disclosure Programme (VDP) assistance
• Applications for Certificate of Residence, tax incentives, and advance rulings
• Tax due diligence on potential acquisition targets
• Advising on tax implications for mergers, acquisitions, business restructuring, and financing arrangements

Corporate Tax Planning

Effective tax planning is distinct from compliance. Where compliance ensures obligations are met correctly, planning identifies opportunities to structure your business affairs more efficiently within the bounds of Singapore tax law.

Ledgen’s corporate tax planning service helps businesses assess their current structures against available exemptions, incentives, and reliefs. We evaluate whether group structures are optimally configured, whether inter-company arrangements are properly documented, and whether your business is positioned to benefit from available IRAS incentive schemes.

Tax planning is most valuable when integrated into business decision-making, before transactions are executed, before financial year-end, and ahead of corporate changes. Our team works alongside your finance function to deliver planning that is practical, defensible, and documented.

Transfer Pricing Advisory

Multinational companies and businesses with cross-border related-party transactions face specific obligations under Singapore’s transfer pricing regime. IRAS requires that such transactions be conducted on arm’s length terms and that documentation supporting this position be maintained contemporaneously.

Under the Transfer Pricing Guidelines issued by IRAS  (8th Edition) in November 2025, the compliance landscape has been updated to include a Simplified and Streamlined Approach (SSA) for qualifying marketing and distribution activities, aligned with the OECD Pillar One Amount B framework. This applies on a pilot basis from 1 January 2026 to 31 December 2028.

Ledgen’s transfer pricing advisory covers:

• Transfer pricing documentation preparation under Section 34F of the Income Tax Act
• Benchmarking studies to establish arm’s length pricing ranges
• Related-party transaction review and structuring
• Country-by-Country (CbC) reporting support for qualifying Singapore-headquartered multinationals
• Advance Pricing Agreement (APA) applications
• Assessment of IRAS 8th Edition TPG implications for existing structures
• Transfer pricing dispute resolution and IRAS correspondence

Individual Income Tax Services

Singapore residents, expatriates, and individuals with multiple income streams each face distinct tax obligations. We prepare and file personal income tax returns accurately and on time, and advise on available reliefs and deductions.

Our individual tax services cover:

• Annual personal income tax return preparation and filing
• Verification of IRAS assessments and objections
• Tax clearance (Form IR21) for departing expatriates
• Voluntary disclosure assistance
• Planning advice for individuals with variable or investment income

Industries We Serve

Ledgen Group advises clients across a broad range of sectors. Our experience across industries means we understand the sector-specific compliance considerations that generalist advisers sometimes miss.

We regularly work with businesses in:

• Professional services and consultancies, often with cross-border service arrangements and withholding tax exposure
• Trading and distribution, managing GST on imports and exports, intercompany pricing, and inventory deductions
• Financial services and investment holding, covering dividend treatment, capital versus income characterisation, and investment holding company tax computations
• Technology and SaaS, covering GST on digital services, R&D tax deductions, and IP structuring
• Construction and property, covering progress billing GST treatment, property-related stamp duty, and developer tax positions
• Retail and e-commerce, covering GST on cross-border digital sales, inventory write-offs, and multi-entity group structures
• Healthcare, covering GST exemption assessments, professional income characterisation, and practice structure advice
• Hospitality and F&B, covering GST compliance on mixed supplies and deductibility of entertainment expenses

Why Choose Ledgen Group?

Ledgen Group is a Singapore-based corporate services firm providing tax, accounting, payroll, and corporate secretarial services. Our tax team brings practical experience across IRAS compliance, advisory mandates, and dispute resolution.

What distinguishes our approach:

Technically sound, commercially grounded. Our advice reflects both the letter of Singapore tax law and the practical commercial context of your business. We do not recommend positions we cannot defend.

Responsive when it matters. Tax deadlines and IRAS queries do not always arrive with advance notice. Our team is available to act quickly, including on short notice, to meet filing deadlines or respond to IRAS correspondence.

Full documentation. Every planning position, voluntary disclosure, or advance ruling application we prepare is supported by thorough documentation. This protects you in the event of an IRAS review.

Track record of dispute resolution. Our team has successfully argued capital gain positions against IRAS challenge, obtained waivers of shareholding continuity tests to preserve significant tax losses, and managed voluntary disclosures across GST and withholding tax, consistently achieving outcomes that reduced or eliminated penalty exposure.

Integrated services. Because we also provide accounting, payroll, and corporate secretarial services, our tax advice is informed by your actual financial position rather than information provided out of context.