What Singapore MAS Notice 637 - Risk-Based Capital Framework for Banks requires
MAS Notice 637 implements the Basel III capital framework for banks licensed under the Banking Act 1970 (Cap 19) in Singapore. Banks must maintain: CET1 Capital Adequacy Ratio (CAR) ≥6.5%, Tier 1 CAR ≥8%, Total CAR ≥10%, and minimum Total CAR of 12.5% when the Capital Conservation Buffer (CCB) of 2.5% is fully phased in. D-SIBs (Domestic Systemically Important Banks - DBS, OCBC, UOB) face an additional D-SIB buffer of 2%. Singapore adopts Basel III output floor (72.5% of standardised approach RWA) from January 2025 per Basel III finalisation.
Pillar: Banking & Global Finance · Authority: Monetary Authority of Singapore (MAS); Banking Act 1970 (Cap 19) - MAS supervisory authority; BCBS Basel III framework as adopted by MAS · Version: 1.0.1 · Last updated:
Primary source: https://www.mas.gov.sg/regulation/notices/notice-637
SHA-256 integrity: b0539ce18fa203eee21bc43e29fd8c2a261ce57f3bdbaa2034440517be00d20b
Primary Citations — 5 traced to source
- Part 3 (Minimum CET1 6.5%, Tier 1 8%, Total CAR 10-12.5%); Part 4 (Capital Conservation Buffer 2.5%, CCyB, D-SIB HLA 2%); Part 5 (eligible capital instruments - CET1, AT1, T2 criteria); Output floor 72.5% from January 2025 — MAS Notice 637 - Notice on Risk Based Capital Adequacy Requirements
- BCBS D-SIB indicators assessment methodology; Singapore 2% HLA surcharge for DBS, OCBC, UOB; annual review and phase-in for designation changes; enhanced supervisory expectations for D-SIBs — MAS D-SIB Framework - Designation and Higher Loss Absorbency
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- Discovery (free): /api/v1/nodes/sg-mas-notice-637-risk-based-capital.json — 6-field metadata
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