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FRM Exam Part II · The Global Drivers of Private Credit

Basel III Impact on Private Credit Growth and Bank Retrenchment

Updated 11 October 2026 · Fact-checked

After 2008, Basel III raised capital, leverage and liquidity requirements, so risky leveraged loans used more bank capital for the same income. Banks cut or sold this lending. Non-bank lenders, funded by investors and not bound by bank capital rules, filled the gap. This shift is regulatory arbitrage, and risk moves rather than disappears.

Understand Post-Crisis Regulation and Bank Retrenchment

Start with a simple idea. A bank funds loans with deposits, debt and equity. Regulators require it to hold equity capital against the risk of its assets. The riskier the loan, the more capital it needs, and the lower the bank's return on that capital.

Basel III was the post-crisis response to bank failures. It raised the quality and quantity of capital (more common equity, plus a capital conservation buffer and a countercyclical buffer). It added a non-risk-based leverage ratio. It also added liquidity rules: the Liquidity Coverage Ratio (LCR) and the Net Stable Funding Ratio (NSFR). Large banks also faced extra surcharges for global systemic importance.

Leveraged loans, meaning loans to highly indebted, often private-equity-owned, borrowers, carry high risk weights and large losses in stress. After Basel III, each unit of such lending used more scarce capital and funding. Supervisors also issued leveraged lending guidance and ran stress tests. Many banks found the return on capital too low, so they cut hold sizes, moved to arranging and distributing loans, or exited middle-market lending.

The demand did not disappear. Private equity sponsors and mid-sized firms still needed credit. Non-bank lenders, such as private credit funds, business development companies and insurers, stepped in. They fund themselves with investor capital and long-term, often locked-up, money. They are not subject to bank capital or liquidity rules, and they can hold loans to maturity without runs from depositors.

This is regulatory arbitrage: activity moves to where rules are lighter. Regulation is only one driver. Low interest rates and the search for yield by institutional investors also pushed money into private credit. Banks did not fully leave. They now lend to private credit funds through back-leverage and credit lines, so risk returns to banks indirectly. That link is a key financial stability point.

Key formulas to remember

Capital ratio
Capital ratio = Regulatory capital ÷ Risk-weighted assets (RWA)
Higher risk weights on leveraged loans raise RWA, so the bank needs more capital for the same loan.
Leverage ratio
Leverage ratio = Tier 1 capital ÷ Total exposure measure
Not risk-based. The Basel III minimum is 3%. It limits balance sheet size regardless of loan risk.
Return on regulatory capital
Return on capital = Net income from loan ÷ Capital allocated to loan
Capital allocated = Loan amount × risk weight × required capital ratio. Used to explain why banks retreat.
Liquidity ratios
LCR = High-quality liquid assets ÷ Net cash outflows over 30 days ≥ 100%; NSFR = Available stable funding ÷ Required stable funding ≥ 100%
These raise the funding cost of holding long, illiquid loans.

How to solve Post-Crisis Regulation and Bank Retrenchment questions

Use this method for any question on why banks retreated or how non-banks grew.

  1. 1Identify the lender type in the question: bank (regulated, deposit-funded) or non-bank (investor-funded, lighter rules).
  2. 2Name the specific Basel III rule involved: higher capital, buffers, leverage ratio, LCR, NSFR, or G-SIB surcharge.
  3. 3Link the rule to the loan: higher risk weight means more capital, which means lower return on capital.
  4. 4If numbers are given, compute capital = exposure × risk weight × capital ratio, then return on that capital.
  5. 5State the consequence: banks cut, sell or syndicate the loan, and non-banks fill the demand.
  6. 6Check for other drivers such as low rates, search for yield and investor demand, and do not credit regulation alone.
  7. 7Add the risk interpretation: risk migrates to less regulated entities and returns to banks through credit lines and back-leverage.

Quickest way: Capital-return shortcut

When to use it: Use when a question gives a loan margin and asks whether a bank or a non-bank will lend.

  1. Compute capital = loan × risk weight × required ratio.
  2. Divide the net income by that capital.
  3. Compare it to the bank's target return on equity.
  4. If below target, the bank retreats and a non-bank with a lower return hurdle lends.
  5. Pick the answer that mentions regulatory arbitrage and risk migration, not disappearance of risk.

Common mistakes in Post-Crisis Regulation and Bank Retrenchment

  • Saying Basel III banned leveraged lending.

    Students confuse higher cost with a prohibition.

    Fix: Basel III raised capital and liquidity costs. Banks chose to reduce activity because returns fell.

  • Treating regulation as the only cause of private credit growth.

    The topic title stresses regulation.

    Fix: Add demand from sponsors and investor search for yield in a low-rate world.

  • Saying risk left the financial system.

    Students see banks holding fewer loans.

    Fix: Risk moved to non-banks and links back to banks through credit lines and fund financing.

  • Applying the leverage ratio with risk weights.

    Mixing it up with the risk-based capital ratio.

    Fix: The leverage ratio uses total exposure, not RWA. It is a backstop.

  • Assuming non-banks face no rules at all.

    The phrase lighter regulation gets read as none.

    Fix: Say they face lighter prudential rules, such as no bank capital or deposit run risk, though securities and investor rules may apply.

Worked examples

Example 1

A bank earns ₹6,00,000 net income a year on a ₹50,00,000 leveraged loan. The risk weight is 150% and it must hold capital of 10% of RWA. Its target return on capital is 15%. Does it keep lending?

Show the solution
  1. RWA = ₹50,00,000 × 150% = ₹75,00,000.
  2. Capital = ₹75,00,000 × 10% = ₹7,50,000.
  3. Return on capital = ₹6,00,000 ÷ ₹7,50,000 = 80%? Recheck: 6,00,000 ÷ 7,50,000 = 0.8, so 80%.
  4. That is far above 15%, so the loan clears the hurdle on these figures.

Answer: Yes, the return on capital is 80%, well above the 15% target, so the bank keeps the loan. Retreat occurs only when income per unit of capital falls below the hurdle.

Example 2

A bank earns ₹60,000 a year on a ₹10,00,000 loan. Post-reform the risk weight is 150% and required capital is 12% of RWA. Target return is 40%. Does it hold the loan, and what follows?

Show the solution
  1. RWA = ₹10,00,000 × 150% = ₹15,00,000.
  2. Capital = ₹15,00,000 × 12% = ₹1,80,000.
  3. Return on capital = ₹60,000 ÷ ₹1,80,000 = 33.3%.
  4. 33.3% is below the 40% target.

Answer: The return is about 33.3%, below the 40% target, so the bank reduces or sells the loan. A non-bank lender with a lower return hurdle and no bank capital rules can take it, which is regulatory arbitrage.

Exam tips

  • Name the exact Basel III element (capital, leverage ratio, LCR, NSFR) rather than writing generic regulation.
  • Expect case-style questions asking for the best explanation. Choose the answer that combines regulation and investor demand.
  • Read for risk migration. Correct options usually say risk shifts to non-banks and links back to banks.
  • For calculations, always capital = exposure × risk weight × ratio before computing returns.
  • Watch absolute words such as always or eliminated. They are usually wrong.

Practice questions from The Global Drivers of Private Credit

Post-Crisis Regulation and Bank Retrenchment: frequently asked questions

How did Basel III affect private credit growth?

It raised the capital and liquidity cost of risky bank lending. Banks pulled back from leveraged and middle-market loans. Private credit funds filled the gap, helped by investor demand for yield.

Why did banks retreat from leveraged lending after 2008?

Higher capital and leverage requirements cut the return on capital for risky loans. Supervisory guidance and stress tests added to the pressure. Many banks moved to arranging loans rather than holding them.

What is regulatory arbitrage in private credit?

It is the shift of activity to entities facing lighter rules. Private credit funds lend without bank capital or deposit-run constraints. Risk moves to them and can return to banks through financing.

What is the difference between bank lending and non-bank lending?

Banks fund with deposits and face capital and liquidity rules. Non-banks fund with investor capital, often locked up, and face lighter prudential rules. Non-banks can hold illiquid loans but may carry valuation and illiquidity risk.