Risks: Overall, a student card can be a great asset for your teen to have in college, but there are a few risks to beware of. If your teen overspends so much that they max out their credit limit, they risk harming their utilization rate — which is the amount of credit they use divided by their total credit limit. For example, if your teen has a $500 credit limit and uses $400, their utilization rate would be 80% ($400/$500). That’s very high, and we recommend keeping utilization below 30%.
If you don’t pay a medical bill or a cell phone bill, your account may be referred to a collection agency. Once it is with an agency, they can register that debt with the credit bureau, which can have a big negative impact on your score. Most negative information will stay on your credit bureau for 7 years. Positive information will stay on your credit bureau forever, so long as you keep the account open. If you close an account with positive information, then it will typically stay on your report for about 10 years, until that account completely disappears from your credit bureau and score. If you don’t use your credit card (and therefore no payment is due), your score will not improve. You have to use credit in order to get a good score.