BIS FSI Insights No. 78 — Simple, resilient and proportional: revisiting regulation for small banks (3 September 2026)

Tag: S-2026-09-03-bis-fsi-insights-78-small-bank-proportionality Type: report (BIS Financial Stability Institute — FSI Insights on policy implementation, No. 78) Author(s): Jonathan Beissinger, Rodrigo Coelho and Raihan Zamil (BIS Financial Stability Institute) Date of source: 2026-09-03 Date ingested: 2026-09-08 Authority weight: medium — a BIS FSI policy-benchmarking paper retrieved from the primary BIS landing page, but FSI Insights carry an explicit disclaimer that the views are the authors’ and “do not necessarily reflect the views of the BIS, its member central banks or the Basel-based standard-setting bodies”; landing-page abstract/summary only (full 21-page PDF not extracted this run). Raw file: S-2026-09-03-bis-fsi-insights-78-small-bank-proportionality.md. Landing page: bis.org/publications/fsi-insight-78-simple-resilient-and-proportional-revisiting-regulation-small-banks.

What it claims

On 3 September 2026 the BIS Financial Stability Institute published FSI Insights No. 78, “Simple, resilient and proportional: revisiting regulation for small banks.” The paper’s premise is that small banks are “the backbone of local economies” but have distinct business models and risk profiles from larger banks, and that the Basel Committee (BCBS) promotes proportionality in global banking standards — encouraging tailored requirements based on bank size, complexity and risk profile. It notes that the BCBS deliberately does not define “small banks” or prescribe tailoring methods, leaving authorities flexibility to design approaches suited to local circumstances.

The paper examines how six jurisdictions design simplified regulatory regimes for small banks, focusing on two things: the eligibility criteria used to decide which banks qualify for a simplified regime, and the proportionality approaches applied to prudential requirements. It also offers policy considerations for authorities aiming to tailor small-bank frameworks.

Its headline recommendations (from the summary): authorities should use the BCBS size / complexity / risk-profile criteria as a foundation while developing locally relevant indicators to refine each criterion; and prudential requirements should be aligned with the applicable eligibility criteria — the worked example given is tying exemptions from market-risk capital requirements to trading-book size limits. The stated aim is that small-bank regimes “remain simple, proportional, and resilient,” allowing small banks to serve local communities. The paper carries JEL classifications G21 (banks) and G28 (financial regulation).

Notable quotes

• “Recognising these differences, the Basel Committee on Banking Supervision (BCBS) promotes proportionality in global banking standards, encouraging tailored requirements based on bank size, complexity, and risk profile.” (abstract)
• “The BCBS does not define ‘small banks’ or prescribe tailoring methods, allowing authorities flexibility to develop approaches suited to local circumstances.” (abstract)
• “Prudential requirements should be aligned with applicable eligibility criteria, such as tying exemptions from market risk capital requirements to trading book size limits.” (summary)
• “The views expressed in this publication are those of the authors and do not necessarily reflect the views of the BIS, its member central banks or the Basel-based standard-setting bodies.” (disclaimer)

What’s speculative vs. asserted

• Asserted (as fact / BCBS position): the 3 Sep 2026 publication; the six-jurisdiction benchmarking scope; the BCBS’s stated proportionality principle (size, complexity, risk profile); that the BCBS does not define “small banks” or prescribe tailoring methods; the two organising themes (eligibility criteria; proportionality of prudential requirements).
• Authors’ policy recommendations (not binding standards): the “use BCBS criteria as a foundation + local indicators,” “align requirements to eligibility criteria,” and the market-risk/trading-book worked example are the authors’ policy considerations — FSI Insights are analytical/benchmarking papers, not BCBS standards, and the disclaimer makes this explicit.
• Not confirmed this run (in the un-extracted 21-page PDF): which six jurisdictions; the specific eligibility indicators/thresholds; whether the paper touches data-governance, model-risk, operational-risk or AI proportionality at all; the detailed policy considerations.
• Ingesting-agent inference (not the source’s own claim): the read-across to Paul’s service lines — that the same size/complexity/risk-profile tailoring logic governs how a governance or assurance framework should be scaled to an institution — is the wiki’s assessment, not the paper’s; the paper is about prudential proportionality, not AI or governance-framework design.

Topics this feeds

• EBA Simplification and Efficiency Programme — supplies a cross-jurisdiction, BCBS/BIS-level statement of the proportionality principle that sits behind the EBA’s “simplify to strengthen” programme; both treat proportionality/simplification as right-sizing requirements to size, complexity and risk rather than deregulation. Added there as a related cross-jurisdiction reference with the caveat that FSI 78 is a BIS/FSI benchmarking paper (prudential focus), not an EBA product.

Open questions raised

• Which six jurisdictions does the paper benchmark, and do any of them extend proportionality to data-governance, model-risk, operational-risk or AI requirements (relevant to whether this becomes more than a prudential-capital datapoint for the wiki)?
• Does the paper’s eligibility-criteria framework offer a transferable template for right-sizing a governance/assurance framework to an institution — i.e. is the analogy the wiki is drawing actually developed in the PDF, or purely inferred here?