The loophole is actually in the way that your credit score is calculated. Your credit score takes into account your history of paying back debt, as well as your current debt levels. However, it does not take into account how much debt you are currently carrying relative to your income. This means that someone with a high income and a lot of debt can have a good credit score, while someone with a low income and no debt can have a bad credit score. This loophole can cost you money in two ways.