# What are the limits on Commercial Bank Lending?

**Authors:** Jacky Mallett  
**arXiv:** [0904.1426](https://arxiv.org/abs/0904.1426)  
**Date:** 2009-04-08  
**Summary page:** https://www.summarizepaper.com/en/paper/0904.1426v4/

## Key points

- The 2007-8 credit crisis has been widely analyzed
- Relaxed lending standards and irrational behavior of speculative investors were key factors in the crisis
- Monetary issues arising from increased commercial bank lending have been overlooked
- The authors propose a general explanation for credit crises by examining the mechanics of the banking system
- Failures in the Basel regulatory framework contributed to the current credit crisis
- Removal of central bank reserve requirements and use of debt as regulatory capital are among the failures identified
- Introduction of securitized lending removed control over total quantity of lending from banks
- Imbalance between total money and loan supply growth led to a destabilizing debt spiral and increased risk of loan defaults
- Better controls on credit supply within banking systems are needed for economic stability.

## Summary

The 2007-8 credit crisis has been widely analyzed, with much focus on relaxed lending standards and the irrational behavior of speculative investors in real estate and other assets. One aspect that has been overlooked is the significant monetary issues that can arise from increased commercial bank lending. In this paper, the authors propose a general explanation for credit crises by examining the mechanics of the banking system, particularly its internal controls on credit supply. The authors argue that the current credit crisis is a result of multiple failures in the Basel regulatory framework. These failures include the removal of central bank reserve requirements from certain deposit accounts within the banking system, allowing financial instruments representing debt to be used as regulatory capital. Additionally, the introduction of securitized lending removed a previously implicit control over the total quantity of lending originating from banks. According to the authors, these problems have led to a destabilizing imbalance between total money and loan supply growth. Total lending sourced from commercial banks increased at a faster rate than accompanying growth in the money supply which created an unsustainable macroeconomic debt spiral and increased risk of loan defaults, thereby reducing overall stability in the banking system. In summary, this paper provides a comprehensive analysis of credit crises by examining how failures in Basel's regulatory framework and changes in commercial bank lending practices have contributed to financial instability. The authors highlight important monetary issues that have been overlooked in previous analyses and emphasize the need for better controls on credit supply within banking systems to ensure economic stability.