Wednesday, July 25, 2007

Using credit history to price car insurance

The FTC's Bureau of Economics just relased their FACTA study, which concludes that:
  1. Credit scores effectively predict ... the total cost of [auto insurance] claims.
  2. Credit scores permit insurers to evaluate risk with greater accuracy, which may make them more willing to offer insurance to higher-risk consumers ... . [note: this is why you can call up GEICO, let them look at your credit report, and get an auto insurance quote over the phone].
  3. ..as a group, African-Americans and Hispanics tend to have lower scores than non-Hispanic whites and Asians.
  4. ...scores effectively predict risk of claims within racial and ethnic groups.
  5. The Commission could not develop an alternative scoring model that would continue to predict risk effectively, yet decrease the differences in scores among racial and ethnic groups.
So even though credit scores help insurance companies price insurance more accurately, point 3 implies that some groups pay more, on average, than others. The policy issue behind the study is whether the government ought to ban the use of credit history for anything but making loans. As point 4 implies, banning the use of credit scores would result in higher prices for good drivers, regardless of their race or ethnicity.

Theory tells us that in states which ban the use of credit scores to price insurance (California and Massassachusetts) insurance companies would find it more costly to distinguish high from low risks, so they may lump them together (called "pooling"), and price insurance at the average risk. Or they may be concerned that only high risks would be willing to buy high-priced insurance (what economists call "adverse selection") and price high or, if price controls prevent high prices, exit the market.

I would be curious if any of our readers know of novel uses of credit scores as a screening mechanism, or if they have developed better predictors (point 5) in a particular application, like pricing insurance or screening job applicants.

9 comments:

  1. Per published information, the U.S. Government uses consumer credit scores when evaluating security clearance applications.

    Makes sense if you view CCS as a measure of an individual's propensity to handle the assets/resources of others in a responsible manner. Additionally, if an applicant maintains substantial consumer debt they may be more susceptible to simple bribery.

    ReplyDelete
  2. It's a nice idea.... well... I have got my car insured through Esurance.

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