If you find an error on all three credit reports, you’ll have to dispute it separately with each credit bureau, as they’re run separately from one another. You’ll also have to file a separate dispute for each error you find. (Here’s more on dealing with multiple errors on credit reports.) You can dispute these errors on your own for free, or you could consider hiring a reputable credit repair company or credit counselor to help.
Credit utilization is the second most important factor in credit score calculations – it’s 30% of your score. It measures the amount of debt you currently hold relative to your total available credit limit. So, if you have $500 in balances and a $5,000 total credit limit, your utilization ratio is 10%. Any ratio higher than 10% starts to drag down your score. That means, maintaining zero balances overall is good for your credit. It also allows you to use credit cards without incurring any interest charges!