But the absolute amount of available credit isn't as important to your credit scores as your debt to credit ratio is. This is the total amount of available credit on your credit report, divided by the total amount of debt you have and it's also known as your credit utilization ratio or rate.
It's a number that many experts say should stay below 20%-30%. Another way to put this is that your total available credit should be five times the total amount of debt. So, if you're total available credit was $1,000 and your total balance is $300, then you're using 30% of your available credit.
How Closing a Credit Card Can Affect Your Credit Utilization Rate
Just as opening new cards can have a short-term negative affect, so can closing existing accounts. When you close a credit card account, you're reducing your total credit limit. If you owe nothing on any credit cards, your credit utilization rate is zero, and lowering your total available credit won't change that rate. However, depending on the age of the credit card account that is closed, your length of credit history could be negatively impacted and affect your score.
Learn what a credit utilization rate is, how to calculate your credit utilization and how it affects your credit score.
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Before you close credit cards you may not use remember, that can affect your credit score as well.