What condition must be met for a goal to be allowed in soccer?

For a goal to be allowed in soccer, it is essential that the entire ball must cross the goal line between the goalposts and underneath the crossbar. This condition ensures that the scoring attempt is valid and meets the fundamental criteria set by the Laws of the Game. The requirement is unambiguous, emphasizing that not just a part of the ball, but the entirety, must be beyond the line.

While other aspects of the game, such as player positioning (onside rule), actions within the penalty area, or how many times the ball is played, can impact the overall play, they do not directly affect the singular condition for a goal to be counted. Thus, the focus remains on the complete crossing of the ball over the goal line, making it paramount in declaring a goal valid.