LOWER YOUR UTILIZATION
Another quick way to boost your credit score is by reducing your credit utilization, the amount of credit you’re using compared to your total available credit. As long as your utilization is under 30 percent, it won’t have a negative effect on your credit score; if it’s over 30 percent, your score will drop.
Here’s how it is calculated: if you have $15,000 in credit card debt and $25,000 in available credit, your credit utilization would equal 60 percent. The best way to reduce that ratio is to pay down your debt without racking up any new charges. You can also reduce it by increasing your available credit, but that can backfire if you end up charging more or if it requires another credit check.