Global Banks Face Capital Shortfall of 1.4 Billion Euros Under Final Basel III Framework
Updated: Sep 25
Latest Basel Committee monitoring report shows stable leverage ratios and robust profits despite tightening capital requirements ahead of the 2028 deadline.
A 1.4-billion-euro regulatory capital shortfall measures the cumulative capital gap under the fully phased-in final Basel III framework for participating banks in the second half of 2025 [2].
According to the Basel Committee on Banking Supervision's monitoring exercise based on data as of December 31, 2025, Group 1 banks alone reported a regulatory capital shortfall of 1.2 billion euros, up from 0.9 billion euros at the end of June 2025 [1].
The data, gathered from voluntary and confidential submissions by national supervisors, covers a global sample of 149 banks [2].
This includes 106 large internationally active "Group 1" banks—defined as those with Tier 1 capital exceeding 3 billion euros—and 43 "Group 2" institutions [1, 2].
The broader impact of the fully phased-in Basel III framework on Tier 1 minimum required capital (MRC) for Group 1 banks is estimated at +2.2% [1]. This is a slight increase from the +1.7% impact recorded in June 2025, a change driven by a larger sample of banks in the latest monitoring exercise [1].
For global systemically important banks (G-SIBs), the estimated MRC impact is 1.8%, while Group 2 banks face a much lower 0.7% increase [2].
This divergence highlights how different balance sheet structures, business models, and regulatory sensitivities affect capital requirements across the banking tier hierarchy [2].
Capital Requirements and Risk-Weighted Asset Dynamics
Under the fully phased-in framework, the 2.2% increase in Tier 1 MRC for Group 1 banks is driven by risk-based requirements, which add 3.2% to the capital demand, offset by a 1.0 percentage point reduction in leverage ratio requirements [2].
The primary drivers of this risk-based expansion are the "output floor" (+1.9%) and market risk regulations (+1.7%) [2].
For Group 2 banks, the 0.7% overall impact is similarly shaped by a 3.5% increase in risk-based measures—led by a 3.3% output floor impact—which is offset by a 2.8% reduction in leverage ratio MRC [2].
These figures assume a full implementation of the standards without accounting for transitional arrangements, such as grandfathering, which are scheduled to expire on January 1, 2028 [1, 2].
Regional variations further illustrate the uneven geographical impact of the final standards. European Group 1 banks face a relatively low MRC impact of +0.8%, and those in the Americas face +1.2% [2].
In contrast, banks in the rest of the world exhibit a much higher projected impact of +3.6% [2].
This is despite Europe currently maintaining the highest Tier 1 capital ratios relative to the Americas and the rest of the world [2].
Furthermore, leverage ratios for Group 1 banks remain lower in Europe (5.1%) than in the Americas (5.6%) and the rest of the world (7.0%) [2].
Liquidity Metrics and Commercial Profitability
Alongside capital requirements, the Basel III framework enforces strict liquidity indicators to govern bank balance sheets. As of December 31, 2025, the weighted average Liquidity Coverage Ratio (LCR) for Group 1 banks improved slightly to 136.6%, up 1.7 percentage points from the previous reporting period due to a contraction in net cash outflows [1, 2].
Conversely, the weighted average Net Stable Funding Ratio (NSFR) decreased slightly by 0.6 percentage points to 123.3% [1, 2]. This minor decline occurred because the decrease in required stable funding was smaller than the decrease in available stable funding [2].
Crucially, all banks in the monitoring sample reported LCR and NSFR levels above the minimum regulatory requirement of 100% [1].
Despite these tightening regulatory constraints, commercial performance remains robust among the world's largest financial institutions. Between June and December 2025, after-tax profits for Group 1 banks rose from 174.2 billion euros to 177.8 billion euros [2]. The dividend payout ratio for these banks stood at 32.7% [2].
Regionally, annual after-tax profits rose by 8.3% in Europe and 2.3% in the rest of the world, while remaining virtually flat in the Americas at -0.1% compared to the 12-month period ending December 2024 [2].
The capacity of these banks to absorb the final Basel III requirements is supported by a massive historical accumulation of capital. From June 2011 to December 2025, Group 1 banks' Common Equity Tier 1 (CET1) capital expanded by 162.5%, rising from 1,320 billion euros to 3,465 billion euros [2].
In the final six months of 2025 alone, CET1 capital grew by 84.5 billion euros (or 2.5%), with the rest of the world leading the growth at +3.2% [2].
The average CET1 capital ratio under the current framework remained stable at 13.9% for the unbalanced sample, while the balanced dataset showed an overall CET1 ratio of 14.2% [2].
This capital growth has consistently outpaced the increase in risk-weighted assets, reinforcing the stability of the global banking architecture as it approaches the 2028 implementation deadline [1, 2].
Sources
SteelGate note: This is an attributed news brief based on the cited source material, not independent confirmation of every issuer claim. Reporting and explanatory synthesis are prepared for editorial review. Nothing in this article is financial, investment or legal advice.
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