If you ever want to borrow money to make a large purchase for something like a car or home, the lender will look at your credit score. It used to be that nobody would tell you what your score is, since the formula was somehow cloaked in secrecy. Nowadays you can find out what your credit score is...don't ask me how, I don't even know my own since I haven't been in the market for several years.
Anyway, Michelle Singletary on Blackamerica Web tries to break it all down:
According to Watt, here is what's factored into your credit score:
-- Your credit utilization for each active revolving account, such as credit cards and some home equity lines of credit.
-- Credit utilization across for all active revolving accounts.
-- Credit utilization for each active installment account you have, such as a mortgage, auto or student loan.
-- Credit utilization across all active installment accounts.
“We have found that both factors -- individual credit utilization and aggregate credit utilization -- have value in predicting future credit risk,'' Watts said.
It makes more sense if you read the whole article:
http://www.blackamericaweb.com/site....ance/sing52805