MAS Notice 637 (Amendment) 2025 — Risk Based Capital Adequacy Requirements for Banks Incorporated in Singapore
Monetary Authority of Singapore (MAS)
· published 2025-10-09
Research Pending
Awaiting research outcome
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Rich-narrative analysis of how AI models fail on this regulation, written for
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This paper presents findings from RegLeg's evaluation of AI model responses to questions about MAS Notice 637 — the Monetary Authority of Singapore's risk-based capital adequacy framework for banks — covering both the consolidated notice and its 2024 amendment. Two Anthropic...
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AI Failures: Hallucination and Blind Spots Shape
(6 Response Hallucination + 10 Citation Hallucination + 0 Blind Spots = 16 Failure Mode Findings)
Citation Hallucination Modes (10 failures)
Fabricated
0
Pretextual
0
Contradictory
10
AI Blind Spots (0 failures)
Web Retrieval
0
Training Knowledge
0
Hallucination findings
6 findings across
2 AI Models.
Each finding pairs an AI answer against the authenticated regulator-text excerpt that contradicts it.
Does MAS Notice 637 on risk-based capital adequacy apply to financial holding companies incorporated in Singapore, or is there a separate MAS notice for them, and if so, what is it?
Claude Opus 4.7 (web search on) answered
Financial holding companies incorporated in Singapore are covered by a separate notice issued under the Financial Holding Companies Act — typically Notice FHC-N637 (Risk Based Capital Adequacy Requirements for Financial Holding Companies)
In MAS Notice 637 (Amendment) 2024, what do the yellow-highlighted passages signify, and will they appear in the final consolidated version of the Notice?
Claude Opus 4.7 (web search on) answered
Yellow highlighting in MAS tracked-change amendment PDFs is typically used as a drafting/visual aid to draw attention to particular text — for example, defined terms, cross-references, or items the reader should pay particular attention to during review.
In the MAS Notice 637 (Amendment) 2024 PDF, what do the yellow highlights signify, and do they carry through into the final consolidated (untracked) version of MAS Notice 637?
Claude Sonnet 4.6 (web search on) answered
Text highlighted in yellow in the MAS Notice 637 (Amendment) 2024 PDF consists of editorial annotations describing the nature or purpose of the changes being made — for example, notes explaining what a particular insertion or deletion achieves.
What does Annex 4D of the consolidated MAS Notice 637 cover, and what category of items does it explicitly exclude from its scope?
Claude Sonnet 4.6 (web search on) answered
sets out the credit conversion factors (CCFs) for off-balance sheet items in the context of the leverage ratio framework … Note: some search summaries linked Annex 4D to the SA credit risk framework rather than the leverage ratio; the precise scope should be verified
What does Annex 6C of the consolidated MAS Notice 637 address?
Claude Sonnet 4.6 (web search on) answered
Annex 6C of the consolidated MAS Notice 637 addresses standards for a prudent valuation framework. It sets out the methodology and criteria that a Reporting Bank must apply when prudently valuing fair-valued financial instruments
What does Division 4 of Part VI of MAS Notice 637 cover?
Claude Sonnet 4.6 (web search on) answered
Division 4 of Part VI of MAS Notice 637 covers the submission requirements relating to capital instruments … Note: the exact divisional structure of Part VI in the 2023-revised notice could not be exhaustively verified from publicly indexed search excerpts alone
AI Blind Spots
No AI Blind Spots documented for this regulation yet.
Affected audiences
These findings affect the following audiences. Click through for the case studies that aggregate findings across all regulations in this jurisdiction.
Practitioners
Sectors × Departments