The handicap requirement for P790 irons varies depending on the type of golf you are playing. For a standard 18-hole game, the USGA recommends a minimum handicap index of 8 or lower. If you are playing in tournaments, your handicap may need to be even lower. Additionally, some courses and leagues have their own requirements that can vary from those set by the USGA. It is important to check with your local course or league before purchasing P790 irons to ensure that they meet any applicable handicap requirements.