📋 Key Highlights
- Key Takeaway 1: The Global Minimum Tax (Pillar Two) was legislated on June 6, 2025, taking retrospective effect from January 1, 2025, and applying to multinational enterprise (MNE) groups with annual consolidated revenues of EUR 750 million or more.
- Key Takeaway 2: The Foreign Sourced Income Exemption (FSIE) regime was expanded on January 1, 2024, to encompass disposal gains on all types of assets, subject to stricter scrutiny.
- Key Takeaway 3: All residential property demand-side management measures, including Buyer's Stamp Duty (BSD), Special Stamp Duty (SSD), and New Residential Stamp Duty (NRSD), were cancelled with immediate effect on February 28, 2024.
- Key Takeaway 4: The Inland Revenue Department (IRD) is intensifying transfer pricing scrutiny, with penalties for non-compliance reaching up to HKD 100,000, and is mandating electronic tax filing for MNE groups starting from the 2025/26 year of assessment.
Is your business prepared to embrace Hong Kong's transformative new tax era? Over the past two years, driven by international cooperation and global tax reform, Hong Kong's tax rules have undergone fundamental shifts. In response to these changes, the Hong Kong Inland Revenue Department (IRD) has thoroughly reshaped its audit strategies, presenting brand-new compliance challenges for multinational enterprises and local businesses alike. Understanding these evolving audit priorities is not merely about avoiding penalties, but about achieving sustainable growth within the new tax environment.
Hong Kong's Tax Revolution: Four Game-Changing Reforms
Since 2023, Hong Kong's tax framework has rapidly evolved from a traditionally simple territorial source principle into a sophisticated international tax system. These reforms not only reflect Hong Kong's commitment to global tax cooperation, but also aim to preserve its competitive edge as Asia's premier financial hub.
| Key Reform | Effective Date | Key Business Impact |
|---|---|---|
| Global Minimum Tax (Pillar Two) | 6 June 2025 (retroactive to 1 January 2025) | Imposes a 15% minimum tax on MNE groups with revenue ≥ EUR 750 million; introduces the Hong Kong Minimum Top-up Tax (HKMTT) and the Income Inclusion Rule (IIR) |
| Expansion of FSIE Regime (FSIE 2.0) | 1 January 2024 | Expanded to cover disposal gains on all types of assets; introduced intra-group transfer relief |
| Abolition of Stamp Duties | 28 February 2024 | Abolished BSD, SSD, and NRSD for all residential property transactions |
| Strengthening of Transfer Pricing | Ongoing (enhanced in 2024–2025) | Aligned with the 2022 OECD Guidelines; enhanced enforcement and documentation requirements |
| Mandatory Electronic Tax Filing for MNEs | From the 2025/26 Year of Assessment | In-scope MNE group entities must electronically submit Profits Tax returns for years of assessment commencing on or after 1 April 2025 |
1. Pillar Two: Hong Kong Joins the Global Minimum Tax Club
On 6 June 2025, Hong Kong officially gazetted legislation implementing the OECD BEPS 2.0 Pillar Two framework. This is not just another tax change—it is a fundamental shift in how multinational enterprises operating in Hong Kong are taxed globally.
What Pillar Two Practically Means for Your Business:
- Hong Kong Minimum Top-up Tax (HKMTT): A domestic minimum tax ensuring that MNE groups pay an effective tax rate of at least 15% on Hong Kong-sourced income.
- Income Inclusion Rule (IIR): Effective retroactively from 1 January 2025, requiring parent entities to pay top-up tax on the profits of low-taxed foreign subsidiaries.
- EUR 750 Million Threshold: Applies to MNE groups with annual consolidated revenue of at least EUR 750 million in at least two of the previous four fiscal years.
- Undertaxed Profits Rule (UTPR) Deferred: The UTPR has been deferred for further study, providing breathing room for businesses.
Key Filing Deadlines You Cannot Miss:
- Top-up Tax Notification: Must be submitted within 6 months after the end of the fiscal year — this notification informs the Inland Revenue Department (IRD) that your group falls within the applicable scope and designates the reporting entity.
- Top-up Tax Return (including the GloBE Information Return, GIR): Must be submitted within 15 months after the end of the fiscal year (18 months for the first transition year).
Sample Timeline: For a group whose fiscal year ends on December 31, 2025, your notification must be submitted by June 30, 2026, and the tax return must be submitted by March 31, 2027. The IRD has already begun proactively issuing batch letters to potentially applicable multinational groups, requiring relevant entities to assess their status and respond within two months.
2. FSIE 2.0: The Expanded Foreign Source Income Exemption Regime
Originally introduced in January 2023, the FSIE regime was established by Hong Kong to comply with EU requirements. The expanded "FSIE 2.0" regime came into effect on January 1, 2024, significantly expanding its scope of coverage.
Key Changes Under FSIE 2.0:
- Expanded Asset Coverage: Now covers foreign-sourced disposal gains from all types of assets (movable property, immovable property, financial assets, and non-financial assets), regardless of whether they are of a capital or revenue nature.
- Original Scope (FSIE 1.0): Only covered dividends, interest, intellectual property income, and equity disposal gains.
- Intra-group Transfer Relief: Added a relief mechanism allowing tax deferral when assets are transferred between associated entities, subject to anti-abuse rules.
- Trader Exclusion: Foreign-sourced disposal gains derived from non-IP assets by asset traders fall outside the scope of the FSIE regime.
- Historical Cost Basis: Disposal gains must be calculated based on historical acquisition cost — the EU rejected Hong Kong's rebasing proposal.
3. Stamp Duty Repeal: The End of the "Cooling Measures" Era
In the 2024-25 Budget delivered on February 28, 2024, the Financial Secretary announced the immediate cancellation of all demand-side management measures (DSMMs) for residential properties. This marked the official end of the era of "cooling measures" that had lasted for more than 13 years to cool Hong Kong's property market.
Repealed Measures (Effective February 28, 2024):
- Buyer's Stamp Duty (BSD): Previously levied on residential property acquisitions by non-Hong Kong permanent residents and companies.
- Special Stamp Duty (SSD): Previously levied on properties disposed of within 24 months of acquisition, with rates of up to 20%.
- New Residential Stamp Duty (NRSD): Previously levied at a flat rate of 15% on specific categories of buyers.
The Stamp Duty (Amendment) Ordinance 2024 was passed by the Legislative Council on April 10, 2024, and gazetted on April 19, 2024. Any instrument executed on or after February 28, 2024, involving the sale or transfer of residential property is no longer subject to these additional stamp duties.
4. Transfer Pricing: The IRD's New Enforcement Focus
In response to bilateral pressure from global competent authorities and Hong Kong's commitment to OECD guidelines, the Inland Revenue Department (IRD) has significantly intensified its transfer pricing enforcement. The 2025 Pillar Two legislation also updated Hong Kong's transfer pricing rules to align with the OECD Transfer Pricing Guidelines 2022.
Enhanced Documentation Requirements:
- Master File and Local File: Must be prepared within 9 months after the end of the accounting period.
- Form IR1475: Transfer pricing reporting form, which must be submitted within one month upon request by the IRD.
- Exemption Thresholds: A Hong Kong entity is exempt from preparing a Master File/Local File if it meets any two of the following criteria: total revenue ≤ HKD 400 million, total assets ≤ HKD 300 million, or average number of employees ≤ 100.
How IRD Audits Are Evolving: New Focus Areas
To address the complexities arising from recent legislative changes, the IRD has fundamentally restructured its audit approach. Unit 4 of the IRD, responsible for combating tax evasion and avoidance, has expanded its capabilities to ensure compliance with these new regulatory requirements.
| Audit Focus Area | Key Scrutiny Items | Required Documentation |
|---|---|---|
| Pillar Two Compliance | • MNE group revenue threshold • Effective tax rate (ETR) calculations • Accuracy of the GloBE Information Return (GIR) • Safe harbour eligibility |
• Top-up tax notifications • Top-up tax returns • GIR details • Consolidated financial statements |
| FSIE Regime Compliance | • Proper identification of foreign-sourced disposal gains • Asset classification (capital vs. revenue nature) • Intra-group transfer relief claims • Economic substance requirements |
• Disposal transaction records • Historical cost supporting documentation • Related-party agreements • Substance proof (CIGA/NREO) |
| Offshore Income Claims | • Determination of the source of profits • Location of profit-generating activities • Substance over form analysis • Location of contract execution |
• Contracts and agreements • Evidence of offshore operations • Decision-making documentation • Staff deployment records |
• Scale of related party transactions
• Indications of profit shifting
• Involvement of tax haven jurisdictions
• Form IR1475
• Comparability analysis
• Intercompany agreements
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