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Practitioners — Accountants (CA/PA) · published 2026-05-28 · methodology v2.1

Content of Annex 6C of consolidated MAS Notice 637

What the RLB Specialist Panel found

4. Content of Annex 6C of consolidated MAS Notice 637

  • Question (paraphrased to protect IP): What does Annex 6C of the consolidated MAS Notice 637 address?
  • Source regulation: MAS Notice 637 — Risk-Based Capital Adequacy Requirements for Banks (Regulator portal: https://www.mas.gov.sg)
  • What AI assistants typically say: The AI described Annex 6C as addressing a prudent valuation framework — setting out the methodology and criteria a reporting bank must apply when prudently valuing fair-valued financial instruments, including additional valuation adjustments.
  • What the regulator actually says: No regulator excerpt was available for direct quotation; practitioners should consult the consolidated MAS Notice 637 on the MAS portal at https://www.mas.gov.sg for the definitive annex content.
  • Why the AI went wrong: The prudent valuation and additional valuation adjustment (AVA) content attributed to Annex 6C appears to have been inferred from general Basel III market risk framework structure rather than retrieved from the MAS Notice 637 text. No supporting passage or section heading from the notice was provided by the AI to confirm this attribution. If the actual content of Annex 6C differs — as is plausible given the low confidence the AI itself indicated — a practitioner relying on this description would advise or report incorrectly.
  • Cited source(s):
Impact for this audience

An Accountants (CA/PA) advising on fair-value instrument valuation or reviewing a bank's prudent valuation framework could rely on the AI's Annex 6C characterisation to structure that advice, without recognising that the characterisation was inferred rather than sourced. If the actual content of Annex 6C differs — covering different methodology, different thresholds, or different categories of instrument — the practitioner's advice would be wrong. The consequences for a bank client could include inadequate additional valuation adjustments, misstated regulatory capital, and supervisory challenge from MAS on the adequacy of the valuation framework.

References — raw findings (per AI model)
This finding also affects
← Previous finding Finding 3. Content and scope of Annex 4D of consolidated MAS Notice 637 Next finding → Finding 5. Content of Division 4 of Part VI of MAS Notice 637
Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

Plain text 
RegLeg Specialist Panel (2026). "Content of Annex 6C of consolidated MAS Notice 637 — Practitioners — Accountants (CA/PA)." Citation ID: . RegLegBrief AI Hallucination Research, published 2026-05-28. https://reglegbrief.com/audiences/practitioners/sg/accountants-ca-pa/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/
APA 7th edition 
RegLeg Specialist Panel. (2026). Content of Annex 6C of consolidated MAS Notice 637 [Hallucination finding ]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/audiences/practitioners/sg/accountants-ca-pa/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/
Bluebook / OSCOLA (US + UK legal) 
RegLeg Specialist Panel, Content of Annex 6C of consolidated MAS Notice 637 [], RegLegBrief AI Hallucination Research (May 28, 2026), https://reglegbrief.com/audiences/practitioners/sg/accountants-ca-pa/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/.
BibTeX 
@misc{reglegbrief_,
  author    = {RegLeg Specialist Panel},
  title     = {Content of Annex 6C of consolidated MAS Notice 637},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: },
  url       = {https://reglegbrief.com/audiences/practitioners/sg/accountants-ca-pa/finding/q-NOTICE-637-CAPITAL-ADEQUACY-BANKS-2025-v1-019/}
}
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