Why are there so many credit scores?

Dear Liz: I am confused. I have always thought there was one FICO score, prepared by a private company. I thought each credit agency also had its own credit score but it was not scaled the same as FICO. Your recent column said one can buy two of the three FICO scores (Equifax and TransUnion), and the third (Experian) will soon offer its FICO through the MyFICO website. Please clarify.

Answer: It’s no wonder you’re confused. Many of the companies marketing credit scores don’t make it clear that there are many types of credit scores, and even many types of FICOs, which is the leading credit scoring formula.

The credit bureaus typically sell their own proprietary scores to individuals, either “consumer education” scores that lenders might not use or some version of the VantageScore, a credit scoring formula that was created as a rival to the FICO. Older versions of the VantageScore ranged from 500 to 990, but the latest version has the same 300-to-850 scale as the FICO.

The bureaus also sell FICO scores of various types to lenders. The FICO formulas were created by a separate company, Fair Isaac. Bureaus apply the proprietary FICO formula to the data in your credit reports to create your FICO scores.

Individuals usually can’t purchase their FICO scores directly from the credit bureaus. People can, however, buy their FICOs from the MyFICO website, which now offers FICOs from all three bureaus: Equifax, Experian and TransUnion. (For a few years Experian had refused to sell its FICOs to individuals, but that’s now changed.)

Something else you should know is that the FICOs you see may be different from the ones lenders see. The underlying data in your credit reports may change between the time you see your scores and the time the lenders see them. Or the lenders may buy FICO scores that are tweaked for their industry, such as for credit cards or auto loans. Another possibility is that lenders may use a different (usually older) version of the formula from the ones used to create the MyFICO scores.

Still, the scores you get from MyFICO at least should be in the same ballpark as the ones your lenders use. The same might not be true of any credit score that’s not specifically labeled FICO.