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A Review of Capital Adequacy Frameworks and Risk Weighted Asset Optimization in Modern Banking Systems
Subject area: Management and Commerce · Area of research: Capital Adequacy Frameworks
Abstract
This critical review examines how regulatory capital requirements, risk-weighted asset (RWA) methodologies, and bank portfolio decisions interact to shape solvency and systemic stability in modern banking systems. Applying a structured thematic synthesis of 250 DOI-verified, finance-focused sources published through 2019, the review traces the theoretical foundations of bank capital adequacy, the regulatory evolution from Basel I through emerging Basel IV discussions, the methodologies banks use to calculate and optimize risk-weighted assets, and the implementation challenges, including procyclicality, model risk, and uneven capacity across developed and emerging markets, that shape how these frameworks function in practice. The evidence indicates that capital adequacy performs its stabilizing function only when regulatory ratios are connected to portfolio-level risk measurement, independent model validation, and governance mechanisms, rather than treated as a stand-alone compliance calculation. Beyond synthesizing this literature, the review’s contribution is an integrated capital-optimization logic that links asset composition, model governance, supervisory constraints, and risk-adjusted performance into a single analytical account, together with four testable propositions and a research agenda addressing gaps in cross-jurisdictional comparison, longitudinal validation, and transparency in internal-model use.
Keywords
Capital Adequacy; Risk-Weighted Assets; Basel Accords; Banking Regulation; Financial Stability; Risk Management
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How to cite this paper
@article{1723267,
author = {Kofi Okyere Mensah, Omotayo Pedro, Ann Kinyanjui, Ifeoma Okoli, Priscilla Agboada},
title = {A Review of Capital Adequacy Frameworks and Risk Weighted Asset Optimization in Modern Banking Systems},
journal = {Iconic Research And Engineering Journals},
year = {2019},
volume = {3},
number = {6},
pages = {731-768},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1723267.pdf},
abstract = {This critical review examines how regulatory capital requirements, risk-weighted asset (RWA) methodologies, and bank portfolio decisions interact to shape solvency and systemic stability in modern banking systems. Applying a structured thematic synthesis of 250 DOI-verified, finance-focused sources published through 2019, the review traces the theoretical foundations of bank capital adequacy, the regulatory evolution from Basel I through emerging Basel IV discussions, the methodologies banks use to calculate and optimize risk-weighted assets, and the implementation challenges, including procyclicality, model risk, and uneven capacity across developed and emerging markets, that shape how these frameworks function in practice. The evidence indicates that capital adequacy performs its stabilizing function only when regulatory ratios are connected to portfolio-level risk measurement, independent model validation, and governance mechanisms, rather than treated as a stand-alone compliance calculation. Beyond synthesizing this literature, the review’s contribution is an integrated capital-optimization logic that links asset composition, model governance, supervisory constraints, and risk-adjusted performance into a single analytical account, together with four testable propositions and a research agenda addressing gaps in cross-jurisdictional comparison, longitudinal validation, and transparency in internal-model use.},
keywords = {Capital Adequacy; Risk-Weighted Assets; Basel Accords; Banking Regulation; Financial Stability; Risk Management},
month = {December},
}