On 23 Dec 2025, the HKMA revised the completion instructions for Form MA(BS)12B (IRRBB Supplementary Information), introducing additional time bands for interest rate sensitivity reporting to enhance granularity. The updates require authorized institutions to report banking book positions across the new maturity categories while retaining the option to submit either detailed or aggregate data as per Section C of the instructions.
This article was generated using SAMS, an AI technology by Timothy Loh LLP.
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Revised IRRBB Reporting Form Issued
On 23 Dec 2025, the Hong Kong Monetary Authority (HKMA) issued revised completion instructions for the Return of Interest Rate Risk in the Banking Book (IRRBB) Supplementary Information (Form MA(BS)12B), updating the SPM module IR-1 to enhance granularity in reporting interest rate sensitivity metrics for banking book positions.
Key Form Revision Details
The revision introduces new time bands for interest rate sensitivity reporting, including categories such as 'Next day or less', '1 to 7 days', '8 to 30 days', '1 to 3 months', '3 to 6 months', '6 to 12 months', '1 to 2 years', '2 to 5 years', '5 to 10 years', '10 to 20 years', and 'More than 20 years'. These additions refine the existing structure to capture more precise maturity profiles of interest rate-sensitive assets and liabilities. The form also clarifies that authorized institutions may report either detailed statistics or aggregate figures, as specified in Section C of the completion instructions.
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