Where the Simplification Stops: Liquidity, Concentration, and Information
A simpler capital measure does not make the rest of a small bank’s risk framework redundant. Liquidity, borrower concentration, supervisory reporting and market disclosure answer different questions, even when all of them create compliance work. This chapter maps those functions separately and asks what a proportionate regime may simplify, what it must retain, and which safeguards keep relief from being mistaken for the removal of risk controls.
The distinction is especially important for small banks. Their local funding and lending relationships can make a narrow balance sheet easier to understand in some respects while making it more dependent on one economy or customer base. A regime that reduces capital calculations may still need a liquidity proxy, a lending limit or core information for supervisors. The right test is not whether a requirement looks like paperwork. It is what failure or blind spot the requirement is meant to prevent.
Liquidity is not another name for capital
Capital and liquidity protect against different kinds of pressure. Capital absorbs losses over time; liquidity concerns whether a bank can meet payments and withdrawals as they fall due. A bank can have a substantial capital buffer and still face a funding problem if liquid resources are insufficient or its funding cannot be renewed. Conversely, a bank can have strong liquidity at a moment when losses are eroding its capital. Treating one measure as a substitute for the other creates a gap in the map.
The Basel liquidity framework commonly uses the Liquidity Coverage Ratio (LCR) and the Net Stable Funding Ratio (NSFR). In broad terms, the LCR addresses resilience to near-term cash outflows, while the NSFR addresses whether funding is stable enough over a longer horizon. The exact calculations are not the point here. The design point is that each ratio captures a liquidity dimension that a capital ratio does not.
The six-jurisdiction comparison shows several ways to tailor those requirements. The European Union retains both an LCR and a simplified NSFR for eligible small banks. The United Kingdom retains an LCR and can disapply the NSFR when a retail-deposit condition is met. Switzerland uses an average LCR and a refinancing ratio in place of the NSFR. China uses alternative liquidity metrics intended to serve similar purposes. Brazil is scheduled to introduce a simplified LCR in 2027.
The United States takes a more distinctive route for banks using the CBLR: they are exempt from quantitative LCR and NSFR requirements, while liquidity remains an important part of on-site examinations and the supervisory CAMELS framework. That combination is not equivalent to saying that liquidity is irrelevant. It shifts part of the control from a standardized quantitative requirement to supervisory assessment. The BIS source reports the design and its stated role; it does not prove that examination-based oversight produces the same liquidity outcomes as a quantitative ratio.
A liquidity proxy should therefore be judged by the prudential objective it preserves. A retail-deposit condition may be useful because the funding mix supports a particular simplification. A refinancing ratio may serve a stable-funding purpose with a different calculation.