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Thread: My credit karma scored has dropped 57 points in a week
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Old Sep 1, 2011 | 1:24 pm
  #5  
LongviewTX
 
Join Date: Oct 2010
Location: GGG, DFW, IAH
Posts: 284
Originally Posted by pinniped
Dumb question: why would one website's Transunion-based score be different than another website's Transunion-based score?

I get why Equifax would be different from Transunion...although I wouldn't expect them to be *much* different.
Because FICO formula is secret and get results from official "keeper" of the formula is quite expensive. However there is a number of "approximation" formulas developed that are used by multiple web-sites. In some cases these approximations are close to official FICO score in some cases they are not.

myfico.com is owned by the official keeper of the secret formula while creditkarma.com is not.
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