Bring High Account Balances Below Your Limit

Your credit utilization – a ratio that compares your total debt to total credit – is the second biggest factor that affects your credit score. It's 30% of your score. The higher your balances are, the more it hurts your credit score. Having maxed out credit cards costs precious credit score points (not to mention costly over-the-limit fees). Bring maxed out credit cards below the credit limit, then continue working to pay the balances off completely. Your credit score responds better to credit card balances that are less than 30% of the credit limit, below 10% is ideal.
Loan Balances and Your Credit Score

Your loan balances also affect your credit score in a similar way. The credit score calculation compares your loan current loan balance to the original loan amount. The closer your loan balances are to the original amount you borrowed, the more it hurts your credit score. Focus first on paying down credit card balances because they have more impact on your credit score.
Past Due Accounts vs. High Balances

You'll probably have a limited amount of money to put toward credit repair each month. So, you'll have to prioritize where you spend your money. Focus first on accounts that are in danger of becoming past due. Get as many of these accounts current as possible, preferably all of them. Then, work on bringing down your credit card balances. Third are those accounts that have already been charged-off or sent to a collection agency