What VAR actually is
The Video Assistant Referee (VAR) is a qualified referee stationed in a video operation room with access to every broadcast camera angle. Introduced into the Laws of the Game by IFAB in 2018 after a multi-year trial, VAR exists for one purpose: to correct clear and obvious errors and serious missed incidents in a small number of match-changing situations. It is not a re-refereeing of the whole game — the on-field referee remains the final decision-maker.
The four decisions VAR can review
This is the single most important thing to understand: VAR can only intervene on four categories of decision. Nothing else is reviewable.
- Goals — and whether there was an infringement in the build-up (offside, foul, handball, ball out of play).
- Penalty decisions — whether a penalty should or should not have been awarded.
- Direct red cards — not second yellows.
- Mistaken identity — when the referee cautions or sends off the wrong player.
If an incident does not fall into one of these four, VAR stays silent — no matter how contentious it looks.
"Clear and obvious error" — the threshold
VAR does not exist to find the *technically most correct* decision on every replay. It intervenes only when the on-field call was a clear and obvious error — a mistake most people watching would immediately recognise. Subjective calls that fall within a reasonable margin (a soft contact, a 50/50 handball) are meant to stand as the referee gave them. This is deliberately a high bar, and it's the source of much of VAR's controversy: fans expect perfection, but the system is designed only to remove howlers, not to adjudicate every marginal judgement.
The exception is factual decisions — offside position, whether the ball was in play, the location of an offence. These are not "clear and obvious" judgements; they are yes/no facts, and VAR corrects them whenever they're wrong.
Check vs. review — how it works
Every reviewable incident goes through a silent check — the VAR looks at the replays in the background while play continues. Most checks take seconds and confirm the on-field decision; you often never know they happened.
A review only happens if the check suggests a possible clear and obvious error. Then one of two things occurs:
- On-field review (OFR): the referee is advised to look at the pitchside monitor and makes the final call themselves. Used for subjective decisions (penalties, red cards).
- VAR-only review: for factual matters like offside, the VAR relays the fact and the referee applies it without visiting the monitor.
The referee signals a review by drawing a "TV screen" rectangle in the air.
Offside and semi-automated technology
Offside is the most common VAR intervention because it is factual. At the elite level, tight calls are now handled by semi-automated offside technology (SAOT) — deployed at the 2022 and 2026 World Cups and across major leagues — which tracks the ball and dozens of body points to generate a near-instant, automated offside line. It has cut delays and human line-drawing error, but hasn't ended the debate over "toenail" offsides. For the full mechanics, see the Offside Rule Explained guide.
What VAR cannot do
- It cannot review a second yellow card, a corner/throw-in decision, a foul in midfield, or where a free kick is placed.
- It cannot intervene once play has restarted past the reviewable phase.
- It cannot overrule a purely subjective call that isn't a clear and obvious error.
- It does not make the final decision — the on-field referee does.
Why it's still controversial
VAR measurably reduces clear errors, yet remains divisive. The friction points are consistent: long delays that kill momentum and goal celebrations; inconsistent application of the "clear and obvious" bar between officials and competitions; forensic offside lines overturning goals by millimetres; and a sense that subjective calls are still subjective, just slower. IFAB continues to trial refinements — including in-stadium announcements of decisions and "daylight" offside interpretations — but the core tension, between wanting perfect justice and wanting the game to flow, is unlikely to disappear.
Related guides
Frequently asked questions
- What can VAR review?
- Only four categories of decision: goals (and infringements in the build-up), penalty decisions, direct red cards, and cases of mistaken identity. Nothing else is reviewable.
- Can VAR overturn a second yellow card?
- No. VAR can only review direct red cards, not second cautions (second yellows), and it cannot review the first yellow either.
- What does 'clear and obvious error' mean?
- It is the threshold for VAR intervention on subjective calls. VAR only steps in when the on-field decision was a mistake most viewers would immediately recognise — not for marginal judgements within a reasonable range. Factual matters like offside are corrected whenever wrong.
- Who makes the final decision, VAR or the referee?
- The on-field referee. VAR advises and, for subjective calls, recommends an on-field review at the pitchside monitor, but the referee always makes the final decision.
- Why does VAR take so long?
- Most checks are silent and take seconds. Delays come from reviews of complex incidents — checking multiple phases of a goal build-up, drawing offside lines, or the referee walking to the monitor for an on-field review.