what are football offside rules? A player is in an offside position if, when a teammate plays or touches the ball, the player is nearer the opponents’ goal line than both the ball and the second-last opponent. That position becomes an offense only if the player then gets involved in active play.
This distinction explains why standing beyond the defenders is not automatically a foul. You’ll learn how to judge position, what counts as involvement, which restarts and defensive touches change the decision, and how to apply the rule to common match situations.
What are football offside rules? The basic test
The offside law has two parts: offside position and involvement in active play. A player must meet the position test when a teammate plays or touches the ball, and then become involved in the play for the referee to call an offense.
To check position, imagine a line across the field at the second-last opponent. An attacker is in an offside position if they are in the opponents’ half and nearer the opponents’ goal line than both the ball and that opponent. The goalkeeper counts as an opponent, but is not always one of the last two defenders.
Only body parts that can legally play the ball count. The head, body, and feet can put a player in an offside position; the hands and arms do not. This applies to attackers and goalkeepers. Being level with the ball or the second-last opponent is onside.
Position alone is not an offense. An attacker can stand beyond the defense without the referee stopping play, provided they do not become involved in a way the law prohibits. The key moment is when a teammate plays or touches the ball, not when the attacker receives it.
How to judge an offside decision step by step
Use this sequence when a pass sends an attacker toward goal. It helps separate the timing question from the question of involvement.
- Identify the player who may be involved. Check the attacker’s position, not the position of every teammate.
- Freeze the picture at the teammate’s touch. Judge the attacker’s location at the moment a teammate plays or touches the ball. Do not wait until the ball arrives.
- Check the halfway line. A player cannot be in an offside position while in their own half. The halfway line itself does not count as being in the opponents’ half.
- Compare the attacker with the ball and the second-last opponent. The attacker must be nearer the opponents’ goal line than both. Being level with either one means the player is not in an offside position.
- Decide whether the player became involved. Look for a touch, an effect on an opponent, or an advantage gained from a rebound, deflection, or save.
The decision is based on the attacker’s position at the time of the teammate’s touch, even if the pass travels backward or takes time to reach its target. A player can run back toward the ball and still commit an offense if they were in an offside position at that key moment and then become involved.
What counts as becoming involved in active play?
Being in an offside position becomes an offense when the player is involved in active play. The law groups involvement into three broad situations: interfering with play, interfering with an opponent, or gaining an advantage from a particular kind of defensive contact.
Interfering with play
This is the clearest case: the player touches or plays the ball after a teammate has passed or touched it. An attacker who receives a through ball while in an offside position can be penalized, even if no defender was close enough to challenge.
A player does not have to take a shot to interfere with play. A touch, a controlled pass, or another deliberate attempt to play the ball can be enough. If the ball reaches an onside teammate instead, the offside-positioned player is not automatically penalized just for being nearby.
Interfering with an opponent
A player can be penalized without touching the ball if their position or action affects an opponent. Examples include blocking an opponent’s line of vision to the ball, challenging them for the ball, or clearly attempting to play a nearby ball in a way that affects their ability to play it.
The referee may also penalize an obvious action that clearly affects an opponent’s ability to play the ball. Simply being near a defender is not enough; there must be a meaningful effect on that opponent. For instance, an attacker who stands in front of the goalkeeper may interfere if they block the goalkeeper’s view of a shot.
Gaining an advantage
An attacker in an offside position can be penalized for playing a ball that rebounds or deflects to them from an opponent, or that comes to them after an opponent’s deliberate save. A save is an attempt to stop or deflect a ball that is going into or very close to the goal.
This part of the law prevents an attacker from gaining a prohibited advantage by waiting near goal for a loose ball created by a defensive action. A defender’s touch does not always reset the situation; the type of touch matters.
When a defender’s touch resets offside—and when it does not
A common source of confusion is whether a defender touching the ball makes an attacker onside. A deliberate play by a defender can reset the offside phase, but a mere deflection or a deliberate save does not. The referee judges what the defender did, not just whether the ball changed direction.
A defender has deliberately played the ball when they had control or a realistic opportunity to control it and made an intentional action, such as a pass, clearance, or attempt to gain possession. The player does not need to execute the action well. A poor clearance can still be a deliberate play.
Referees consider factors such as whether the ball traveled from far away, whether its direction was clear, whether it moved quickly, whether it changed direction, how much time the defender had to react, and whether the player could coordinate their movement. These details help distinguish an intentional attempt from a ball that simply struck a defender.
A deflection occurs when the ball hits a defender without a controlled attempt to play it. If an attacker was in an offside position when a teammate played the ball and then collects it after that deflection, the attacker may still be penalized. A defender’s accidental touch does not automatically erase the original position.
A deliberate save is a special exception. Even if a goalkeeper or another defender intentionally reaches for the ball, an attacker in an offside position may still be penalized for playing the ball after that save. The rule treats a save differently from an ordinary deliberate play because the defender is trying to stop a goal-bound ball.
| Defensive contact | Does it usually reset offside? | Practical reading |
|---|---|---|
| Deliberate pass or clearance | Yes | The defender had control or a realistic chance to play the ball intentionally. |
| Accidental deflection | No | The ball changed direction after contact without a deliberate play. |
| Deliberate save | No | The defender tried to stop a ball going into or close to goal. |
| Unclear or rushed contact | It depends | The referee weighs the player’s control, reaction time, and the ball’s movement. |
Useful tip: Do not judge a defensive touch only by its outcome. A defender who miskicks an intentional clearance may have deliberately played the ball, while a sharp ricochet off a defender may remain only a deflection.
Restarts and situations where offside does not apply
A player cannot be penalized for receiving the ball directly from three specific restarts: a goal kick, throw-in, or corner kick. This exception applies to the direct delivery. If another player touches the ball first, the usual offside test applies at that later touch.
For example, an attacker can receive a long goal kick while standing behind the opposing defense without committing an offside offense. But if a teammate touches the ball before it reaches that attacker, the referee judges the attacker’s position at the teammate’s touch.
There is no offside position in a player’s own half. A player may also be level with the second-last opponent or the ball without being offside. These are not special exceptions to an offense; they mean the player has not met the position test in the first place.
Offside can still apply after most other restarts once play is underway. A free kick or kick-off does not create the same blanket exception as a goal kick, throw-in, or corner. The normal position-and-involvement test determines whether an attacker is penalized.
Common match situations, explained
A forward is beyond the defenders but does not touch the pass
There is no automatic call. If the forward does not touch the ball, interfere with an opponent, or otherwise become involved, play can continue. An onside teammate may run onto the pass and play it.
A pass goes backward to an attacker
A backward pass can still lead to an offside offense. The referee checks where the attacker was when the teammate touched the ball. If the attacker was in an offside position at that moment and then plays the pass, the direction of the ball does not cancel the offense.
The goalkeeper comes off the line
The goalkeeper is only one opponent in the comparison. The referee counts the second-last opponent, who might be a defender or another player. If the goalkeeper has moved forward, another defender may be the last opponent, so an attacker can still be in an offside position even with the goalkeeper closer to goal than the attacker.
Two attackers run toward the same ball
One attacker may be in an offside position while a teammate is onside. If the onside player reaches the ball and the other attacker does not affect an opponent or interfere with play, the referee need not stop the game. If the offside-positioned player challenges for the ball or blocks a defender, the decision can change.
A defender tries to play the pass but misses
The outcome alone does not settle the call. If the defender had time and a reasonable ability to control the ball and made a deliberate attempt to play it, the phase may reset. If the ball merely struck the defender, or the action was a deliberate save, an attacker who was already in an offside position may still be penalized.
What the assistant referee and VAR look for
The assistant referee watches the line of the second-last opponent and the attacker’s position when a teammate plays the ball. This can be difficult because players are moving quickly and a small difference in timing may change whether the attacker is level or beyond the line.
The assistant referee may delay raising the flag when an attacking move is developing and the decision is close. This allows play to continue until the attack ends, after which the referee can review the relevant moment if video review is available. A delayed flag does not mean the assistant has decided the attacker is onside.
Where video assistant referee (VAR) is used, officials can review certain goals and other eligible incidents under the competition’s protocol. VAR does not change the definition of offside; it helps officials assess the position and timing using available footage. Not every match has VAR, and the review process varies by competition.
Offside misconceptions that cause confusion
- “Any player beyond the last defender is offside.” Not quite. The test uses the second-last opponent and the ball, and the attacker must be in the opponents’ half. The goalkeeper is not automatically the reference point.
- “Standing offside means the referee must stop play.” No. The player must become involved in active play as defined by the law.
- “The pass has to go forward.” No. The player’s position at the teammate’s touch matters, not whether the ball travels forward or backward.
- “Any defender touch puts the attacker onside.” No. A deflection and a deliberate save do not reset the phase in the same way as a deliberate play.
- “A player is judged when they receive the ball.” The position is judged when a teammate plays or touches the ball. Receiving it later is part of deciding whether the player became involved.
One subtle point is that the referee judges an actual action, not a player’s intention to exploit the rule. A player who does not touch the ball may still commit an offense by clearly challenging an opponent or obstructing their view. Conversely, an attacker can be in an offside position and have no offense called if they stay out of the play.
A quick way to remember the law
Think position, timing, involvement. First, was the attacker beyond both the ball and the second-last opponent in the opponents’ half? Second, were they there at the teammate’s touch? Third, did they touch the ball, affect an opponent, or gain an advantage from a rebound, deflection, or save?
If the answer to the first two questions is yes, but the attacker never becomes involved, there is no offside offense. If the player does become involved, the referee applies the law and awards an indirect free kick to the defending team from the place where the offense occurred.
The simplest way to judge what are football offside rules is to check the attacker’s position at the teammate’s touch, then ask whether the attacker became involved. Being beyond the defense by itself is not enough, and a defender’s touch does not always reset the play.
Next time you watch a close call, identify the second-last opponent, freeze the action at the pass, and look for a touch or an effect on a defender. That three-part check makes most offside decisions much easier to follow.