underwriting, automated underwriting, and discrimination scott susin economist fheo office of...
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Underwriting, Automated Underwriting, and Discrimination
Scott Susin
Economist
FHEO Office of Systemic Investigations
HUD FHEO Policy Conference
July 22, 2010
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Overview
• Underwriting
• 3 Cs: Credit, Capacity, Collateral
• Automated Underwriting -- what’s automated and what’s not
• Not: product choice, verification, appraisal, pricing, marginal/borderline applicants
• Facts and figures
• AUS reduced denial disparities? Who’s left out?
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Underwriting Factors: Credit
• Foreclosures, bankruptcies, liens and/or judgments
• Mortgage delinquencies; Credit delinquencies, repossessions, collections, or charge-offs
• Credit accounts: type, age, limits, usage and status of revolving accounts
• Recent request for new credit
Combine into a score that predicts default (FICO, Fannie/Freddie proprietary sytems)
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Underwriting Factors: Capacity
• Debt ratios:
• monthly housing expense-to-income ratio
• monthly debt payment-to-income ratio
• Salaried versus self-employed borrower
• Cash reserves
• Number of borrowers
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Underwriting Factors: More Capacity
• Loan Characteristics:
• Product: a 15-, 20-, and 30-year fixed rate, a balloon/reset mortgage, an adjustable rate mortgage, etc.
• Purpose of Loan: purchase or refinance (cash-out or no cash-out)
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Underwriting Factors: Collateral
• Borrower's total equity or down payment
• Appraisal
• Property type: a 1-unit or 2- to 4- unit detached property, Condominium Unit or Manufactured Home
• Property use: Primary Residence, Second Home or Investment Property
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Automated Underwriting Systems
• Began to be adopted in mid-1990s, today used for almost every loan
• Computer balances different factors rather than human judgment
• Underwriting factors enter into a formula that predicts default
• Requires data on 100,000s or millions of loans and default outcomes to develop
• Fannie Mae: Desktop Underwriter
• Freddie Mac: Loan Prospector
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Automated Underwriting Systems
• Feed in credit report, other underwriting factors, AUS provides decision
• Decision is Yes/No, Approve/Refer, not Score
• Decision has conditions (documentation)
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“Computers Don’t Discriminate”What’s Not Automated
• Before AUS is run
• Choice of Product, Lender
• AUS says No (Refer)
• Manual Underwriting
• AUS says Yes (Accept)
• Income/Asset Verification
• Appraisal
• Independent of AUS
• Pricing
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Choice of Lender & Product
• Choice of Product
• Often made by loan officer/broker
• Opportunity for steering
• e.g., Lenders where most borrowers don’t document income.
• Higher loan price but less work for lender
• Choice of Lender
• Steer to subprime division, lender
• E.g., Baltimore v. Wells Fargo charges Wells steered customers to subprime division
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AUS returns “refer” – Manual Underwriting
• Explain circumstances
• Temporary illness, unemployment. Won’t recur.
• Borrower probably needs assistance making the case
• HDS testing study found that real estate brokers more likely to assist white homebuyers than minorities. Same for mortgage brokers, loan officers?
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“Lenders Want to Make Loans”
But neither do they want to spend their time on loans that don’t close.
Brokers presumably make a judgment about how to allocate their time, and prejudices can easily enter into their decision
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AUS Returns “Accept” – Verification Follows
• Two common reasons for a loan to be denied are: unable to verify income/assets
• Income can be complicated and time-consuming to verify
• Skilled trades
• Tips, commissions, bonuses
• Government programs such as disability
• Do LOs make as much effort to verify Minority borrower’s income as whites?
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Income Verification
Potentially subjective judgments
• How much documentation is required?
• Letter from government verifying disability income, or from doctor too?
• Is income stable, likely to continue?
• Letter from employer required?
• NY Times: many lenders now assume that women on maternity leave won’t return to work
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Pricing
• Pricing (interest rate, points, and fees) is not determined by AUS. It’s negotiable.
• Lenders would like a higher price
• Yield Spread Premiums or Overages
• Bonuses to broker/LO for selling a higher-rate loan
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0.0
5.1
.15
.2.2
5
1990 1995 2000 2005 2010Year/Month
Black/White Hispanic/White
Purchase
-.1
0.1
.2
1990 1995 2000 2005 2010Year/Month
Black/White Hispanic/White
Refinance
Denial Rate Disparity, Seasonally Adjusted
16
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The Unscored: Racial and Ethnic Patterns
Percent with No Credit Score
Excluding Unknown Race
Including Estimate for
Unknown Race
Non-Hispanic white 8.8% 18.9%
Black 17.6% 29.5%
Hispanic 12.8% 36.1%
Asian 8.8% 20.0%
American Indian 7.3% 47.3%
Unknown race 56.3%
Total 10.2% 22.9%
Source: Author's calculations from data in Federal Reserve Board Report to the Congress on Credit Scoring , Table 9.
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Are the Unscored Creditworthy?
• Catch-22: It’s hard to know because there’s no data on them in credit files
• You’d expect:• Many have little experience paying bills
(young, thin files) • suggests less creditworthy
• Few have major derogatories (bankruptcy, foreclosure, collections) • If they defaulted, they’d have credit scores!
• suggests more creditworthy
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Are the Unscored Creditworthy?
• Brookings examined consumers in a few states where utility bills are reported to credit bureaus• Those who have scores only because of utility bills
have about average delinquency rates (consistent with scores in the 680-740 range)
• So people in other states, without scores but with utility bills in their name, probably also have average scores.
• FTC examined use of credit scores to predict auto insurance claims.• Scores are very predictive of insurance claims.
• People without scores have about average claims risk.
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