- Purpose / Background: This document outlines the Hong Kong Monetary Authority's (HKMA) policy on capital adequacy for locally incorporated Authorized Institutions (AIs) and provides an overview of the framework for calculating their Capital Adequacy Ratio (CAR) and Leverage Ratio (LR). It reflects the latest Basel III standards.
- One-line conclusion (what changed / what needs to be done): Version 5 of CA-G-1, effective from 1 January 2026, updates the capital adequacy regime for locally incorporated AIs, aligning with Basel III and requiring adherence to updated Banking (Capital) Rules.
- Key Changes (3-8 bullets):
- Updated Basel III Alignment: Incorporates latest Basel III capital standards.
- Revised Banking (Capital) Rules: Implements changes mandated by the Banking (Capital) (Amendment) Rules 2025.
- Output Floor Phase-in: Introduces a 5-year phase-in arrangement for the output floor, gradually increasing from 50% in 2025 to 72.5% by 2030.
- Cryptoasset Exposures: Updates capital requirements for cryptoasset exposures within trading books.
- Operational Risk Calculation: Mandates the standardized method for operational risk capital charge calculation using the Business Indicator Component (BIC) and Loss Component (LC).
- Sovereign Concentration Risk: Introduces a progressive risk-weighting for concentrated sovereign exposures exceeding 100% of an AI's Tier 1 capital.
- Key Dates / Deadlines: The new regime, including Version 5 of CA-G-1, takes effect on 1 January 2026.
- Applicability / Impact scope: Applies to all locally incorporated Authorized Institutions (AIs).
- Recommended management actions (3-7 actionable bullets):
- Review and understand the implications of Version 5 of CA-G-1 and the associated Banking (Capital) (Amendment) Rules 2025.
- Assess and update internal policies and procedures to ensure full compliance with the revised capital adequacy framework by the effective date.
- Conduct thorough impact assessments on IT systems, data management, and reporting processes to accommodate the new requirements, particularly concerning the output floor and cryptoasset exposures.
- Ensure adequate training for relevant personnel on the updated capital calculation methodologies and regulatory expectations.
- Proactively engage with the HKMA if any specific interpretations or operational challenges arise during the implementation phase.
- Review investment strategies in financial sector entities and ensure compliance with deduction and risk-weighting requirements.
- Establish or review internal capital targets (CAR and LR) to act as early warning signals above statutory minimums.
1) Document overview (nature, purpose, scope)
This document, CA-G-1 Overview of Capital Adequacy Regime for Locally Incorporated Authorized Institutions V.5, is a statutory guideline issued by the Monetary Authority (MA) under the Banking Ordinance (Cap. 155), §7(3). Its purpose is to set out the MA's policy on capital adequacy for locally incorporated Authorized Institutions (AIs) and to provide an overview of the framework for calculating their Capital Adequacy Ratio (CAR) and Leverage Ratio (LR). It supersedes the previous guideline, V.4, dated 29.11.24. The scope covers all locally incorporated AIs and aligns with Basel III standards currently effective in Hong Kong.
2) Main requirements (group by topic; state what must be done)
AIs are required to:
- Maintain Minimum Capital Ratios: Comply with minimum CAR and LR requirements on both solo and consolidated bases.
- Minimum CAR: Common Equity Tier 1 (CET1) capital ratio (4.5%), Tier 1 capital ratio (6%), and Total capital ratio (8%).
- Minimum LR: 3%.
- Calculate Capital Adequacy: Calculate CAR by dividing the capital base (CET1, AT1, Tier 2 capital) by the sum of risk-weighted amounts (RWAs) for credit risk, market risk, CVA risk, operational risk, and sovereign concentration risk, adjusted for the output floor.
- Calculate Leverage Ratio: Calculate LR as a ratio of Tier 1 capital to the exposure measure, determined on the same basis as CAR (solo, solo-consolidated, or consolidated).
- Classify Capital: Categorize capital into CET1, AT1, and Tier 2 capital based on loss-absorbing capacity.
- Manage Risks: Calculate RWAs for credit risk (including non-securitization, counterparty credit risk, CIS, securitization, and cryptoasset exposures), market risk, CVA risk, operational risk, and sovereign concentration risk according to methodologies in the Banking (Capital) Rules (BCR).
- Apply Output Floor: AIs using model-based approaches for credit or market risk must comply with the output floor, which limits capital requirement reductions compared to standardized approaches. A 5-year phase-in arrangement applies, increasing from 50% in 2025 to 72.5% by 2030.
- Manage Operational Risk: Use the standardized method for calculating operational risk capital charge, comprising a Business Indicator Component (BIC) and a Loss Component (LC).
- Address Cryptoasset Exposures: Calculate market risk and CVA risk capital charges for cryptoasset exposures according to specific rules.
- Monitor Sovereign Concentration Risk: Apply progressive risk weights to concentrated sovereign exposures exceeding 100% of an AI's Tier 1 capital.
- Maintain Internal Processes: Conduct Internal Capital Adequacy Assessment Processes (ICAAP) and maintain a strategy for capital maintenance.
- Disclose Financial Information: Disclose financial resources and state of affairs according to the Banking (Disclosure) Rules (BDR).
- Notify MA of Breaches: Immediately notify the MA of failures to comply with minimum CAR or LR requirements.
3) Key changes (vs previous requirements)
- Effective Date: Version 5 comes into effect on 1 January 2026, aligning with the commencement of the Banking (Capital) (Amendment) Rules 2025.
- Updated Basel III Alignment: Reflects the latest Basel III capital standards.
- Output Floor Phase-in: Introduces a 5-year phase-in for the output floor, impacting the calculation of total RWAs for AIs using model-based approaches.
- Cryptoasset Exposure Treatment: New provisions for calculating capital charges related to cryptoasset exposures.
- Operational Risk Calculation: Mandated standardized method for operational risk capital charge.
- Sovereign Concentration Risk: Introduction of progressive risk weights for concentrated sovereign exposures.
4) Important dates & transition
- Effective Date: All changes in Version 5 of CA-G-1 take effect on 1 January 2026.
- Output Floor Phase-in: Commenced in 2025 and will reach 72.5% by 2030.
5) Impact and risks (operations/compliance/IT/data/reporting)
- Operational Impact: AIs need to adapt calculation methodologies, particularly for market risk, CVA risk, operational risk, and sovereign concentration risk.
- Compliance Risk: Failure to comply with the updated BCR and associated guidelines can lead to contraventions, requiring remediation plans and potential offences for directors and senior management.
- IT and Data: Significant adjustments may be required for IT systems and data management to accurately calculate and report updated CAR and LR figures, especially concerning cryptoassets and the output floor.
- Reporting: Reporting templates and frequencies may need updates to reflect new calculation requirements.
6) Compliance action checklist (practical steps)
- Familiarize with New Rules: Thoroughly review the Banking (Capital) (Amendment) Rules 2025 and CA-G-1 V.5.
- Gap Analysis: Conduct a comprehensive assessment of current systems, processes, and data against new requirements.
- System Updates: Plan and implement necessary IT system modifications for updated risk calculations (e.g., cryptoassets, output floor).
- Data Validation: Ensure data accuracy and completeness for all relevant risk types and capital components.
- Policy Review and Update: Revise internal capital management policies, ICAAP, and risk appetite statements.
- Training: Provide training to staff involved in capital adequacy calculations and reporting.
- Testing and Validation: Perform thorough testing of new systems and processes before the effective date.
- Proactive Communication: Engage with the MA for clarifications or to discuss any implementation challenges.
- Develop Internal Targets: Establish or review non-statutory internal CAR and LR targets.
7) Appendices/attachments summary (if any; 1-3 sentences each; total <= 20%)
This document primarily consists of main body content and cross-references to other modules and the BCR. Specific appendices or attachments are not detailed within the provided text, but references are made to schedules within the BCR (e.g., Schedule 4A, 4B, 4C for capital instruments, Schedule 4D for consolidated capital calculations, Schedule 3 for IMA requirements, Schedule 1A for CVA risk). These schedules contain the detailed technical criteria for various aspects of capital calculation.