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How credit scores work, how a score is calculated

Ever wonder why you can go online and be approved for credit within 60 seconds? Or get pre-qualified for a car without anyone even asking you how much money you make? Or why you get one interest rate on loans, while your neighbor gets another?

The answer is credit scoring.

Your credit score is a number generated by a mathematical algorithm -- a formula -- based on information in your credit report, compared to information on tens of millions of other people. The resulting number is a highly accurate prediction of how likely you are to pay your bills.

If it sounds arcane and unimportant, you couldn't be more wrong. Credit scores are used extensively, and if you've gotten a mortgage, a car loan, a credit card or auto insurance, the rate you received was directly related to your credit score. The higher the number, the better you look to lenders. People with the highest scores get the lowest interest rates.

Scoring categories
Lenders can use one of many different credit-scoring models to determine if you are creditworthy. Different models can produce different scores. However, lenders use some scoring models more than others. The FICO score is one such popular scoring method.

Its scale runs from 300 to 850. The vast majority of people will have scores between 600 and 800. A score of 720 or higher will get you the most favorable interest rates on a mortgage, according to data from Fair Isaac Corp., a California-based company that developed the first credit score as well as the FICO score.

Fair Isaac reports that the American public's credit scores break out along these lines:

Credit score
Percentage

Currently, each of the three major credit bureaus uses their own version of the FICO scoring method -- Equifax has the BEACON score, Experian has the Experian/Fair Isaac Risk Model and TransUnion has the EMPIRICA score. The three versions can come up with varying scores because they use different algorithms. (Variance can also occur because of differences in data contained in different credit reports.)

That could change, depending on whether a new credit-scoring model catches on. It's called the VantageScore. Equifax, Experian and TransUnion collaborated on its development and will all use the same algorithm to compute the score. Consumers can order their VantageScores online at Experian's Web site for $6. Its scoring range runs from 501 to 990 with a corresponding letter grade from A to F. So, a score of 501 to 600 would receive an F, while a score of 901 to 990 would receive an A. Just like in school, A is the best grade you can get.

What's the big deal?
No matter which scoring model lenders use, it pays to have a great credit score. Your credit score affects whether you get credit or not, and how high your interest rate will be. A better score can lower your interest rate.

The difference in the interest rates offered to a person with a score of 520 and a person with a 720 score is 4.36 percentage points, according to Fair Isaac's Web site. On a $100,000, 30-year mortgage, that difference would cost more than $110,325 extra in interest charges, according to Bankrate.com's mortgage calculator. The difference in the monthly payment alone would be about $307.

Powerful little number
If you rented an apartment, got braces, bought cell phone service, applied for a job that involved handling a lot of money, or needed to get utilities connected, there's a good chance your score was pulled.

If you have an existing credit card, the issuer is likely to look at your credit score to decide whether to increase your credit line -- or charge you a higher interest rate, according to a credit scoring study by the Consumer Federation of America and the National Credit Reporting Association.

 
 
Next: Just what goes into the score?
Page | 1 | 2 | 3 |
 
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