Do the risk weighted bank capital requirements make the risky more or less risky?

Basel III’s bank capital requirement’s risk weights (RW) for residential mortgages depending on Loan to Value (LTV); implied Allowed Leverage of capital/equity (AL) and expected Return On Equity (eROE), calculated with a Risk Adjusted 0.5% expected Return on Asset (eROE) 

LTV<50%: RW = 20%: AL = 62.5 to 1: eROE = 31%

50% < LTV ≤ 60%: RW = 25%: AL = 50 to 1: eROE = 25%

60% < LTV ≤ 80%: RW = 30%: AL = 41.7 to 1:  eROE = 21%

80% < LTV ≤ 90%: RW = 40%: AL 31.25 to 1: eROE = 16%

90% < LTV ≤ 100%: RW = 50%: AL 25 to 1: eROE = 12%

LTV > 100%: RW = 70%: AL 17.9 to 1: eROE = 9%

Those with higher LTV, because they are riskier, must naturally pay banks higher risk adjusted interest rates. But, since banks can hold less capital against lower LTVs, they must also compensate banks, so as to provide these with a competitive risk adjusted return on equity.

So, in order for those who have no money to put down (LTV) > 100%, and with which banks can leverage 17.9 times, in order to compete with those who put down LTV <50%, need to provide an expected Risk Adjusted Return on Asset of 1.73 (31%/17.9); meaning in this case a 1.23% higher interest rate than without this distortion.

And we ask: charging those who have no money to put down, and who should perhaps not even have access to a residential mortgage, a 1.23% higher interest rate than what their risk adjusted interest rate would otherwise be, does that make these more or less risky?

Conclusion: The risk weighted bank capital requirements have, de facto, 0% to do with credit risk reduction, and 100% to do with risk generating distortions.

If race can be correlated to higher LTV mortgages, does this not de facto imply regulators are engaged in discrimination based on race?

Basel Committee... Good Job!

In that real very real class war between those who have houses as investment assets and those who just want affordable homes, where do you stand?

Being more creditworthy should not mean being more worthy of credit

And we must also ask, are the risk weighted bank capital requirements really in accordance with the spirit of the Equal Credit Opportunity Act (ECOA) or the Community Reinvestment Act (CRA)?

The risk weights are to access to credit, what protectionist tariffs are to trade, only more pernicious.

Why has Academia for decades kept silence on Basel Committee’s loony and dangerous risk weighted bank capital requirements?

My 2019 letter to the Financial Stability Board (FSB)

Even perfectly perceived risks cause wrong decisions if excessively considered

Should banks consider risk factors, such as the probability of default (PD) and the expected loss given a default (LGD), when setting the interest rates it charges clients? Of course, higher perceived risk-higher interests, lower risks-lower interest rates. 

But regulators curiously decided that these risks should also be cleared for in the capital requirements for banks, and decreed: higher perceived risk-higher capital, lower risks-lower capital.

So now banks clear for these risks both with risk adjusted interest rates and risk adjusted capital. That’s a real serious problem because any risk excessively considered, will produce the wrong decision, even if the risk is perfectly perceived.

Now a higher interest rate perfectly set in accordance to a perfectly perceived higher risk translates, because of higher capital requirement, meaning a lower leverage, into a lower risk adjusted expected return on equity. 

Now a lower interest rate perfectly set in accordance to a perfectly perceived lower risk translates, because of a lower capital requirement, meaning a higher leverage, into a higher risk adjusted expected return on equity.

So now banks, even when the risks are perfectly perceived, lend too little to the risky, or in order to compensate for lower ROEs, at too high risk adjusted interest rates; and lend too much to the safe, or thanks to higher ROEs, at too low risk adjusted interest rates.

This is insane! It produces dangerous misallocation of bank credit to the real economy. Too little financing of the "riskier" future and too much refinancing of the "safer" present.

PS. There is still a possibility of credit being allocated efficiently to the real economy, but that requires that what's perceived as safe to be much safer and what’s perceived as risky to be much riskier. What credit rating agencies could guarantee us such mistakes?

Regulators and bankers looking out for the same risks