Charles Calomiris on Capital Requirements, Leverage, and Financial Regulation

Episode Summary

Executive Summary: Charles Calomiris argues that financial stability requires both capital and liquidity (cash) buffers, because capital ratios alone can be manipulated through accounting and regulatory forbearance. He explains how deposit insurance and implicit bailout expectations create moral hazard, then extends the logic to investment banks funded by repo and other short-term liabilities, showing how rescues protected short-term creditors and encouraged excessive leverage.

Main Topics: What bank capital really is (Priority: 5/5): Calomiris defines capital as a shock absorber: the claims that can realistically absorb losses before taxpayers do. He distinguishes true loss-absorbing claims from protected liabilities like insured deposits or guaranteed debts. Capital vs. cash as buffers (Priority: 5/5): He argues that prudential regulation should focus on both capital and cash. A bank can reduce insolvency risk through either higher equity or more liquid assets, and both matter for absorbing shocks. Deposit insurance and moral hazard (Priority: 5/5): Deposit insurance weakens depositor discipline, reducing market pressure on banks and increasing the incentive for banks to lever up. This shifts risk to taxpayers unless regulation restrains leverage. Forbearance and accounting losses (Priority: 5/5): He criticizes regulatory forbearance and evergreening as practices that hide losses, delay recognition, and often turn small losses into large losses by encouraging zombie banking and risk-taking. Investment banks, repo funding, and shadow banking (Priority: 5/5): Calomiris explains that investment banks were funded by short-term repo and other money-market instruments rather than deposits, but the economic logic was similar: once creditors expected government protection, discipline vanished. Crisis management and bailouts (Priority: 4/5): He argues that 2008 rescues often protected short-term creditors and sometimes even shareholders, but were handled inconsistently and incompetently, reflecting weak institutional understanding and politics.

Key Arguments: Capital is best understood as the set of liabilities that can absorb losses without taxpayer support; insured or guaranteed claims are not capital. Cash and capital are substitutes for reducing insolvency risk, but they are not identical; cash is harder to manipulate because its value is more transparent. Deposit insurance creates moral hazard because depositors stop monitoring banks, which lets banks fund themselves more cheaply and take more risk. Without meaningful market discipline, banks have a strong incentive to increase leverage because insured funding does not fully price risk. Regulatory forbearance and delayed loss recognition allow banks to appear solvent when they are not, worsening eventual losses. Asset sales and deleveraging can trigger fire-sale discounts and credit crunches, pushing innocent borrowers and counterparties into distress. Convertible debt/contingent capital (COCOs) may reduce the costs of raising capital in stressed periods compared with straight equity issuance. Investment banks were effectively financed by run-prone short-term liabilities such as repo, commercial paper, and money-market instruments, making them vulnerable to sudden withdrawal. Government rescues of short-term creditors effectively extended deposit insurance logic into shadow banking, encouraging further leverage. The policy response in 2008 was shaped not only by systemic risk concerns but also by incompetence, weak crisis-management experience, and political incentives.

Data Points: Mortgage example down payment: 20% ($50,000 on a $250,000 house) - Used to explain household equity as a cushion against price declines Home purchase loan: $200,000 - Mortgage borrowed against a $250,000 house Example bank assets: $80 million in loans + $20 million in cash - Vanilla bank balance-sheet example Example bank liabilities: $90 million in deposits + $10 million in capital - Illustrative balance sheet for a bank Capital ratio: 10% - Book equity of $10 million on $100 million of assets Leverage ratio: 9 to 1 - Debt-to-equity ratio in the example bank Loss example: $10 million loss on loans - Bank remains solvent because capital absorbs the loss Loss example: $20 million loss on loans - Bank becomes insolvent and taxpayers would cover the shortfall if deposits are protected Cash ratio shift in NYC banks: About 25% to 75% - Cash assets rose sharply between 1929 and the end of the 1930s Basel-style capital requirement: 8% - Risk-weighted capital requirement discussed for investment banks and commercial banks Commercial bank simple leverage requirement: 5% of total assets - Additional U.S. requirement beyond Basel for commercial banks New capital needed after losses: About $12 million - In the example where losses force a bank below a required capital threshold and it must restore capital plus cushion Repo funding estimate: $8 trillion - Approximate size of the overnight repo market referenced in the discussion Bear Stearns initial stock offer: $2/share - Initial bailout terms for Bear Stearns shareholders Bear Stearns revised stock offer: $10/share - Renegotiated terms improved to stockholders during the rescue Bear Stearns share price reference: Down from $170 - Illustrates collapse in equity value relative to the rescue price

Pivotal Quotes: "Capital is a shock absorber." — Charles Calomiris: Defines the core regulatory function of capital in banking "If the depositors aren't worried, the bankers aren't scared." — Charles Calomiris: Explains how deposit insurance weakens market discipline and increases moral hazard "There really are two ways to skin the cat." — Charles Calomiris: Describes the choice between holding more cash or more capital to reduce insolvency risk

Implications: Financial stability depends on limiting both leverage and liquidity fragility, while making losses visible quickly. If regulation keeps protecting creditors, banks will keep taking risk; if it forces real buffers and credible loss recognition, it can reduce crises.