Are credit cards not viewed as credit until you miss one payment?
First, a note of my personal experience: up until a year ago, my credit lines were composed exclusively of credit cards with perfect payment histories, and my credit score is fine. If you mean that credit cards have no impact on a person's credit score until they miss a payment, that is certainly not correct. FICO's website identifies "payment history" as 35% of your FICO score: The first thing any lender wants to know is whether you’ve paid past credit accounts on time. This is one of the most important factors in a FICO® Score. ... Credit payment history on many types of accounts Account types considered for payment history include: ... Details on late or missed payments ("delinquencies") and public record and collection items FICO® Scores consider: How many accounts show no late payment A good track record on most of your credit accounts will increase your FICO® Scores. Clearly, from the last item alone, we see that credit lines (a category which includes credit cards) with no late payments is a factor in computing your FICO score, and certainly other credit bureaus behave similarly. Possibly the banker was trying to explain some other point, like "If you're careful not to spend more on your card than you have in the bank, you can functionally treat your credit card as a debit line," but did so in a confusing way.