Digital tax compliance in Hong Kong: Preparing for global reporting standards

Is your business ready for Hong Kong's digital tax revolution? As Hong Kong revamps its tax administration system to align with international standards, enterprises face new compliance requirements, mandatory e-filing rules, and international reporting obligations. From the 15% global minimum tax to mandatory electronic filing and iXBRL reporting, Hong Kong's tax environment is undergoing its most significant transformation in decades. This comprehensive guide will help you navigate these changes and ensure your business stays compliant in the digital era.

Back to top

Implementation of the Global Minimum Tax in Hong Kong

Hong Kong has officially implemented Pillar Two of the Organisation for Economic Co-operation and Development (OECD) Base Erosion and Profit Shifting (BEPS) 2.0 package, introducing a 15% global minimum tax for large multinational enterprises. This marks a fundamental shift in international taxation, aimed at curbing profit shifting and ensuring that large corporations pay their fair share of tax wherever they operate.

Legislative Framework and Effective Date

On June 6, 2025, Hong Kong enacted the Inland Revenue (Amendment) (Minimum Tax for Multinational Enterprise Groups) Ordinance 2025. The legislation comprises two key components with retroactive effect:

Compliance Requirements and Filing Deadlines

Affected MNE groups must adhere to strict filing deadlines and make submissions through the new "Pillar Two Portal" to be rolled out in phases starting from January 2026:

Back to top

Mandatory e-Filing and Digital Reporting Requirements

Hong Kong is transitioning from paper-based tax filing to fully digitalised tax administration. The Inland Revenue Department (IRD) has launched new digital platforms and is implementing mandatory e-filing requirements affecting all businesses in phases.

Phased Implementation Timetable

Note: The current year of assessment is 2026/27 (1 April 2026 to 31 March 2027). Please refer to the Inland Revenue Department website for the latest tax rates, allowances, and deadlines.

New Tax Platform Systems (Launched in July 2025)

The Inland Revenue Department launched three new digital platforms in July 2025 to facilitate electronic tax filing and enhance taxpayer services:

• Individual Tax eTAX: Electronic submission of Salaries Tax returns (BIR60), applications for Personal Assessment, tax payments, and account management.

iXBRL Reporting Requirements

The introduction of Inline eXtensible Business Reporting Language (iXBRL) marks a significant shift in the way financial information is reported to the Inland Revenue Department (IRD). iXBRL makes financial statements both human-readable and machine-readable, thereby enabling automated data processing and analysis.

The IRD provides free iXBRL data preparation tools and three taxonomies to assist businesses with compliance:

• Full Hong Kong Financial Reporting Standards (HKFRS) Taxonomy
• HKFRS Taxonomy for Private Entities and SMEs
• Tax Computation Taxonomy

Back to top

Automatic Exchange of Financial Account Information (AEOI) and CRS Reporting

Hong Kong has demonstrated its commitment to international tax transparency by implementing the Common Reporting Standard (CRS) developed by the OECD as the framework for the automatic exchange of financial account information.

2025 CRS Reporting Requirements

Responsibilities of Financial Institutions

Under the AEOI framework, Hong Kong financial institutions must:

1. Identify reportable accounts: Financial accounts held by tax residents of reportable jurisdictions.
2. Apply due diligence procedures: Establish and maintain compliant due diligence procedures.
3. Collect required information: Collect and maintain information regarding account holders and financial account details.
4. Submit annual tax returns: Submit AEOI returns to the Inland Revenue Department by May 31 each year.

Back to top

Country-by-Country Reporting (CbCR)

Hong Kong has implemented Country-by-Country Reporting as part of its commitment to the OECD BEPS Action 13. The Inland Revenue Department is the competent authority responsible for overseeing CbCR compliance in Hong Kong.

Scope of Application and Filing Requirements

Country-by-Country reporting requirements apply to multinational enterprise (MNE) groups with consolidated annual revenue of at least HKD 6.8 billion (approximately EUR 750 million) in the preceding financial year and having at least one entity or permanent establishment in Hong Kong.

Back to top

Preparing for Digital Tax Compliance: Practical Steps

For MNEs Subject to Global Minimum Tax

1. Assess Scope and Impact: Determine whether your group meets the €750 million revenue threshold and identify all Hong Kong constituent entities.
2. Implement Global Anti-Base Erosion (GloBE) Calculation Systems: Develop or acquire software capable of performing complex GloBE calculations and establish data collection processes.
3. Register for the "Pillar Two Portal": Stay tuned for announcements from the Inland Revenue Department regarding portal registration (to be launched in phases starting January 2026).
4. Review Tax Planning Structures: Re-evaluate holding company structures in light of the 15% minimum tax rate.
5. Consult Professional Advisors: Consult tax professionals familiar with the GloBE rules and perform simulation calculations.

For All Businesses Preparing for Mandatory e-Filing

1. Understand Your Timeline: Large enterprises/MNEs must comply starting from the 2025/26 year of assessment; all businesses must comply by 2030.
2. Register for the Appropriate Tax Platforms: Legal entities register for the "Business Tax Portal"; tax professionals register for the "Tax Representatives Portal".
3. Adopt iXBRL Reporting: Download the Inland Revenue Department's free iXBRL Data Preparation Tools and train accounting staff on tagging requirements.
4. Upgrade Accounting Systems: Ensure software can export data in an iXBRL-compliant format.
5. Participate in Voluntary e-Filing: Gain early experience and enjoy an automatic one-month extension for filing tax returns.

For Financial Institutions (CRS/AEOI Compliance)

1. Review and Update Due Diligence Procedures: Ensure compliance with the latest CRS guidelines issued by the Inland Revenue Department and the OECD.
2. Prepare for IRD Compliance Checks: Maintain comprehensive documentation of CRS procedures and conduct internal audits.
3. Enhance Data Management: Establish systems to track reportable accounts across all 120+ tax jurisdictions.
4. Comply with the May 31 Deadline: Complete the CRS return for calendar year 2024 and verify its accuracy prior to submission.

Back to top

Strategic Implications for Hong Kong Businesses

Despite the implementation of the global minimum tax, Hong Kong remains committed to maintaining its position as a business-friendly, low-tax jurisdiction. Key competitive advantages include:

• Simple Tax System: No VAT/GST, capital gains tax, or withholding tax on dividends.
• Territorial Source Principle of Taxation: Only income sourced from Hong Kong is subject to tax (subject to BEPS rules).
• Low Standard Tax Rates: Corporate profits tax rate of 16.5% (under the two-tiered profits tax rates regime, the first HK$2 million of profits is taxed at 8.25%).
• Extensive Tax Treaty Network: Comprehensive Double Taxation Agreements signed with over 45 tax jurisdictions.

Hong Kong's digital tax transformation presents both challenges and opportunities for businesses. While compliance requirements are becoming more sophisticated, moving to digital systems offers significant benefits in efficiency, transparency, and strategic planning. By preparing now, consulting professional advisors, and leveraging digital tools, your business can not only meet these new requirements but also gain a competitive edge in Hong Kong's evolving tax landscape.

Last updated: December 2024 | The information in this article is for general reference only. Please consult a qualified tax professional for specific questions.