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Columns: Dr. Don
Don Taylor, Ph.D., CFA, CFP   Expert: Don Taylor, Ph.D., CFA, CFP
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Keep credit card balance at 30 percent or less
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Various factors impact credit score
 

Dear Dr. Don,
My husband told me that he heard on a radio talk show that you should never "max-out" your credit card. He said you should always only use about 30 percent, otherwise anything more than that will negatively affect your credit score. Is this true?
-- Bee Balances

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Dear Bee,
Yes, he's right, but there's a lot more to a credit score than just this one measure. What your husband is referring to is a measure of credit usage. It considers the ratio of outstanding balances to available credit on your credit cards. If you have three credit cards with total lines of $10,000 then he's suggesting that you don't have more than $3,000 in balances on each one of these cards.

Your credit score is based on the information in your credit report. The graphic below, from the myFICO.com Web site, illustrates the weightings.

Credit score weightings
 

I recommend that you don't spend a lot of time trying to micromanage your credit score. If you use credit responsibly, pay your bills on time and don't max out your credit cards, you'll be fine. When you know you're going to need to apply for credit, try to make sure you put your best foot forward by having a clean credit report and a solid credit score, but don't spend your days worrying about whether you have 30 percent or 40 percent in credit usage.

Bankrate.com's corrections policy -- Posted: Sept. 18, 2007
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