<prompt> Human: As a longtime PFer, I obviously know paying off the full credit card balance is my best move to avoid paying any interest. However, I recently read an article saying not to pay the full outstanding balance and to only pay the statement balance due. Example: I rack up 200 on my card. Statement comes in with a due date of 131. Between my statement generation date and 131, I put another 100 on the card making my outstanding balance 300 on 131. If I pay the entire 300, am I giving the credit card company a 0 interest loan? Would I be better off only paying the 200? My top concern is never paying any interest. Am I good in either situation?  <response>: Pay the statement balance by the statement due date. 