<prompt> Human: I have talked to a few close relatives and friends and the consensus with them seems to be that it is a good rule of thumb to keep 13 of the credit card limit on the card. This seems to be a complete difference of opinion from what Ive read on here. Ill set you up with my scenario and see where your advice takes me.I just paid off a credit card down to 500.00. My limit is 1500.00 I have enough to pay the remaining 500.00 but Im worried as to how that will affect my credit score. The reason the leave some on there method makes sense to me is that if the bankscredit agencies see you pay off your credit card every single month hence not paying any interest, then they make no money off of you. Am I way off as to how that all works?I hate being in debt and would love to pay the remaining balance off but I thought Id see what you guys had to say first.The other question I had was, say I pay this credit card down to 0.00. Should I use it to buy gas, go home, and pay it off OR wait till Im billed for it, then pay it off. Im confused as to the difference between these two. If you wait till youre billed, do they charge you interest on the balance?  <response>: The idea that paying interest on a credit card somehow builds credit faster is a myth and completely wrong. Furthermore, some card issuers waive the grace period on new purchases if you carry a balance.Carrying a balance will do nothing but cost you money.Originally from here, posted by coopdudeBefore someone downvotes and claims youre incorrect... citations.Source 1- 7 nasty credit myths that wont die Myth No. 4: You need to carry a credit card balance to have good scores. Fact: You dont need to be in debt or pay a penny of interest to have good credit scores. Your credit reports and scores dont know whether youre carrying a balance or paying it off in full every month. Thats because the balance reported to the credit bureaus typically is the balance from your last statement, not what was left over after you got that statement and paid the bill. So you might as well pay in full and save yourself the interest. This myth encourages people to carry unnecessary debt, putting them at the mercy of credit card issuers and eroding their financial security.Source 2 - Common Credit Myths You Need To Drop Already Myth 2: Carrying a balance helps build credit The credit bureaus are privy to your payment history and the balance on your monthly credit card bill, but they dont know if youre paying interest or not, Nazari says. This means deciding to pay the minimum each month isnt going to do much more than cost you money, especially if youre carrying a particularly high annual percentage rate. The lesson? Dont forgo payments just to carry a balance month to month.Source 3 - Six Popular Credit Score Myths Build Credit With A Balance One of the most popular credit score myths is that you need to carry a balance in order to build credit. Fortunately, thats not true. In reality, 35 of your credit score is based on your payment history and creditors dont care whether you carry a balance or not. In fact, your credit cards will report your statement balance each month with no other information. No one knows, or cares, whether youve carried a balance from month to month or just racked up the charges on the statement in the last month. 