The impact of BEPS 2.0 on Hong Kong’s tax environment: strategic considerations

Mandatory Electronic Filing Requirements

Starting from the 2025/26 year of assessment, all constituent entities of in-scope multinational enterprise (MNE) groups must electronically file their Profits Tax returns. This represents a significant operational change, requiring enterprises to:

• Register for the IRD's Business Tax Portal (BTP).
• Identify all Hong Kong group entities subject to mandatory electronic filing.
• Opt to receive electronic notices and documents via BTP business accounts.
• Adapt internal processes to align with electronic filing workflows.

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Safe Harbour Provisions: Alleviating Compliance Burdens

Hong Kong has adopted all four safe harbour mechanisms under the OECD GloBE Rules. These provisions significantly reduce compliance costs for qualifying groups:

1. Transitional Country-by-Country Reporting (CbCR) Safe Harbour

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Strategic Impact Assessment and Action Steps for Hong Kong Enterprises

MNE groups with operations in Hong Kong should immediately conduct a comprehensive impact assessment and take the following actions:

1. Determine In-Scope Status: Confirm whether the group meets the €750 million revenue threshold using the "two out of four years" test. Identify all Hong Kong constituent entities, including those managed or controlled in Hong Kong but incorporated offshore.
2. Analyze Effective Tax Rate: Calculate the jurisdictional ETR for Hong Kong operations in accordance with the GloBE rules methodology. Identify factors that may bring the ETR below 15%, such as tax incentives, accelerated depreciation, or timing differences.
3. Assess Safe Harbour Eligibility: Evaluate eligibility for the Transitional CbCR Safe Harbour, particularly the Simplified ETR Test. Assess whether Hong Kong operations meet the de minimis threshold.
4. Prepare for Compliance Reporting: Gather data to prepare the top-up tax notification to be submitted within 6 months after the end of the first fiscal year. Register for the "Business Tax Portal" to prepare for mandatory electronic tax filing.

Preservation of Hong Kong's Territorial Source Principle of Taxation

The Hong Kong Government has clearly confirmed that outside the scope of Pillar Two, the territorial source principle of taxation will continue to apply. This creates a dual-track system:

• For entities outside the scope of Pillar Two: The traditional territorial source taxation regime remains completely unchanged. Only profits sourced in Hong Kong are subject to tax, and existing exemptions continue to apply.
• For in-scope MNE groups: While standard profits tax remains governed by the territorial source principle, additional HKMTT and IIR obligations will apply based on the global income allocation under the GloBE rules.

Hong Kong's implementation of BEPS 2.0 Pillar Two marks a fundamental shift in the local tax environment. While the traditional territorial source system remains applicable to small and medium-sized enterprises, large multinational enterprises must now navigate a complex new compliance framework. Although designing the HKMTT as a QDMTT offers strategic advantages, the compliance burden remains substantial. Affected enterprises should take immediate action to assess their position, prepare for upcoming filing deadlines, and formulate strategies to optimize their tax outcomes under Pillar Two while maintaining operational efficiency.