(24)Amendments to standard formula for interest rate risk should not result in unjustified increase in capital requirements when rates are low. In particular, the calibration of downward shock should not assume interest rate levels to fall significantly below historically observed values across major currencies. Therefore, to ensure proportionality and consistency with past market behaviours, a maturity-dependent floor should be introduced to limit the extent of assumed negative interest rates, increasing with maturity to reflect the lower plausibility of extreme long-term rates.