The future direction of tax dispute resolution in Hong Kong: trends worth paying attention to

Is your business prepared to navigate Hong Kong's rapidly evolving tax dispute landscape? As global tax reforms converge with digital tax administration initiatives, companies operating in Hong Kong face unprecedented scrutiny and complexity. From the implementation of the Global Minimum Tax (BEPS 2.0) to intensified transfer pricing enforcement and the transformation of digital tax filing platforms, understanding these trends is no longer optional—it is critical to effectively managing tax risks and ensuring business continuity.

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Global Minimum Tax (Pillar Two): A New Frontier for Tax Disputes

On 6 June 2025, Hong Kong officially gazetted the Inland Revenue (Amendment) (Minimum Tax for Multinational Enterprise Groups) Ordinance 2025, implementing Pillar Two of the Organisation for Economic Co-operation and Development (OECD) Base Erosion and Profit Shifting (BEPS) 2.0 project. This legislation fundamentally reshapes the international tax landscape, introducing a 15% global minimum tax rate for multinational enterprise (MNE) groups with annual consolidated revenues of EUR 750 million or more.

Implementation Timeline and Key Components

Potential Dispute Areas under Pillar Two

• Effective Tax Rate (ETR) Calculation: Complex adjustments and allocation calculations involving multiple jurisdictions.
• Covered Taxes Calculation: Disputes over which taxes qualify as "covered taxes" under the GloBE rules.
• Jurisdictional Blending: Issues arising from jurisdictional calculations of top-up tax for groups with multiple entities.
• Transitional Safe Harbour Rules: Application and interpretation of the transitional CbCR safe harbour rules.
• Cross-Border Allocation: Disputes regarding the allocation of top-up tax across different jurisdictions.

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Digitalised Tax Administration: The Electronic Tax Filing Revolution

In July 2025, the Inland Revenue Department launched three interconnected electronic platforms, fundamentally transforming the way taxpayers interact with the tax authority. This digital transformation brings both opportunities and challenges for tax dispute resolution.

Mandatory E-Filing Timetable

1. 2025: Mandatory e-filing commences for multinational enterprises (MNEs).
2. 2030: Mandatory e-filing extends to all taxpayers.
3. April 2026: Full adoption of the electronic Block Extension Scheme by tax representatives (applicable to the 2025/26 year of assessment and thereafter).

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Transfer Pricing Disputes: Escalating Scrutiny

In recent years, transfer pricing disputes in Hong Kong have increased dramatically. The Inland Revenue Department (IRD) has significantly intensified its enforcement of transfer pricing regulations, driven by bilateral considerations and pressure from competent authorities worldwide. Large multinational taxpayers are no longer the sole targets—small and medium-sized enterprises and even tax-exempt charities now face tighter scrutiny.

Common Pitfalls Leading to Disputes

• Insufficient Comparability Analysis: Failure to adequately identify and analyze comparable uncontrolled transactions.
• Weak Economic Substance: Reported functions do not align with the actual business substance in Hong Kong.
• Inconsistent Positions: Discrepancies exist between Hong Kong tax returns, group transfer pricing policies, and positions adopted in other tax jurisdictions.
• Incomplete Documentation: Missing or incomplete "Master File" and "Local File".
• Failure to Demonstrate Benefit: Inability to prove actual commercial benefits derived from intra-group services.

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Mutual Agreement Procedure (MAP): Resolving Cross-Border Disputes

Under BEPS Action 14, Hong Kong has committed to implementing the minimum standard to enhance the effectiveness and efficiency of the Mutual Agreement Procedure (MAP). Set out in Article 25 of the OECD Model Tax Convention, MAP requires contracting parties to endeavor to resolve disputes concerning the interpretation and application of tax treaties.

Hong Kong's Expanding Treaty Network

Hong Kong has concluded Comprehensive Double Taxation Agreements/Arrangements (DTAs) with over 45 tax jurisdictions and is actively negotiating with more countries. This expanding treaty network provides broader access to MAP for resolving international tax disputes.

When to Consider Initiating MAP

• Double Taxation: The taxpayer faces actual or potential double taxation resulting from taxation across two jurisdictions.
• Disagreements over Treaty Interpretation: Disputes arising regarding the interpretation or application of tax treaty provisions.
• Transfer Pricing Adjustments: Transfer pricing adjustments made by one tax jurisdiction result in or exacerbate double taxation.
• Permanent Establishment Disputes: Disagreements regarding the existence of a permanent establishment (PE) or the attribution of profits thereto.

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Advance Pricing Arrangement (APA): Proactive Dispute Prevention

Hong Kong launched the APA programme in April 2012 and introduced a statutory APA regime in July 2018. An APA determines an appropriate set of criteria for the transfer pricing of controlled transactions over a fixed period before those transactions take place. This provides taxpayers with certainty and reduces the risk of future transfer pricing disputes.

Application Thresholds

According to Departmental Interpretation and Practice Notes No. 48 (DIPN 48), the application thresholds are determined based on the nature of the related-party transactions:

• Sale of goods: HKD 80 million per year
• Provision of services: HKD 40 million per year
• Use of intangible assets (such as royalties): HKD 20 million per year

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Emerging Trends in Tax Dispute Resolution

1. Increased Audit Activity and Risk-Based Compliance Reviews

The IRD has been taking measures to combat BEPS activities and adopting a more conservative and stringent approach during reviews. This means Hong Kong taxpayers across all sectors face significant pressure to defend their tax return positions—not only large multinational enterprises, but also SMEs and tax-exempt charities.

2. Enhanced Data Analytics and Exchange of Information

Hong Kong participates in international tax transparency initiatives, including Automatic Exchange of Financial Account Information (AEOI) and Country-by-Country Reporting (CbCR). These initiatives provide the IRD with unprecedented access to taxpayer data, enabling more targeted and effective audits.

3. Focus on Economic Substance

The Inland Revenue Department is scrutinising more stringently whether taxpayers claiming Hong Kong tax incentives possess genuine local economic substance. This includes examining physical presence, qualified personnel with appropriate decision-making authority, operating expenditures commensurate with the reported activities, and core income-generating activities.

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Practical Strategies for Managing Tax Disputes

Proactive Compliance and Documentation

The foundation of effective dispute management is robust, contemporaneous documentation:

• Transfer Pricing Documentation: Maintain comprehensive, up-to-date "Master Files" and "Local Files" that accurately reflect business operations.
• Technical Tax Files: Document tax positions, including analyses of applicable laws, relevant case precedents, and technical justifications.
• Substance Evidence: Retain evidence of economic substance, including records of key personnel, decision-making processes, and value-creating activities.
• Board Minutes and Resolutions: Ensure corporate governance documentation supports tax positions and commercial decisions.

Engaging with the Inland Revenue Department

Constructive engagement with the Inland Revenue Department facilitates dispute resolution:

1. Timely Responses: Provide complete and well-documented responses to IRD enquiries within the stipulated timeframes.
2. Professional Communication: Maintain professional, fact-based communications focused on technical substance.
3. Proactive Disclosure: Consider proactively disclosing errors or uncertain tax positions before discovery by the IRD.
4. Objection Procedures: Understand and properly utilize Hong Kong's tax objection and appeal procedures when disputes arise.

Hong Kong's tax dispute resolution landscape is undergoing a profound transformation, driven by the implementation of BEPS 2.0, advances in digital administration, and enhanced transfer pricing enforcement. Navigating this evolving environment successfully requires proactive compliance, robust documentation, strategic use of dispute prevention mechanisms such as APAs, and an in-depth understanding of international dispute resolution frameworks, including MAPs. As Hong Kong maintains its status as an international financial centre while adapting to global tax standards, businesses must remain vigilant, closely monitor developments, and adjust their tax risk management strategies accordingly.