How added time is worked out
That number glowing beside the pitch is not a countdown timer. The IFAB Laws of the Game make this explicit: when the fourth official raises the electronic board at the end of the final minute of each half, they are indicating the minimum additional time the referee has decided to play. The match can, and often does, continue beyond it.
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This distinction matters for anyone watching the clock tick past 90, wondering why play persists when the board showed three minutes and three minutes have elapsed. The referee is not running late. The law builds in flexibility that the board cannot display.
How the Number Is Built
The minimum figure comes from a specific accounting exercise. Law 7 of the IFAB Laws of the Game 2026/27 requires the referee to make allowance for time lost through substitutions, assessment and removal of injured players, wasting time, disciplinary sanctions, medical stoppages permitted by competition rules, delays for VAR checks and reviews, goal celebrations, and any other significant delay to a restart.
The categories have expanded over time. The 2016-17 Laws already included substitutions, injury treatment, time-wasting, sanctions, drinks breaks, and goal celebrations. The current version adds VAR delays explicitly and frames drinks breaks and cooling breaks as examples of medical stoppages permitted by competition rules. Drinks breaks should not exceed one minute; cooling breaks run from ninety seconds to three minutes.
The fourth official does not calculate this independently. They indicate the minimum additional time decided by the referee. The process happens throughout the half—referees track stoppages, fourth officials compile them, and the number is settled before the board goes up.
What the Fourth Official Actually Shows
The FA's published version of Law 7, last updated in 2026, restates the core principle: the fourth official indicates the minimum additional time decided by the referee, and the referee may increase it but not reduce it. This is not guidance. It is the wording of the law itself.
The board therefore carries a built-in asymmetry. It can rise. It cannot fall. A referee who initially signals four minutes and then encounters a lengthy injury treatment inside added time can extend the half. A referee who spots an error in their own calculation cannot shave minutes off to correct it. The minimum stands.
What the Law Counts as Lost Time
The list is exhaustive. Substitutions—whether routine tactical changes or the additional substitution opportunity in extra time permitted under Law 3—interrupt flow. Injury assessments consume time even when the player stays on the pitch. Removal of injured players, particularly when stretcher bearers enter, creates obvious gaps.
Disciplinary sanctions extend beyond the card itself. The referee must record details, players reposition, and tempers settle. VAR checks and reviews have become a major category since their introduction, with the referee often conducting on-field reviews that halt play for a minute or more.
Goal celebrations fall under "any other significant delay to a restart." Elaborate choreography, crowd interaction, or simply a slow walk back from the corner flag all accumulate. Medical stoppages permitted by competition rules include the drinks and cooling breaks with their specified maximum durations. Anything else that delays a restart—equipment failure, pitch invasions, ball retrieval from distant stands—joins the tally.
Where Play Can Go Beyond the Board
Here is the practical consequence that frustrates broadcasters and spectators. Law 7 states that if a stoppage towards the end of the game is longer than the remaining playing time, the additional time played is the remaining playing time, not the length of the stoppage. This creates a ceiling on individual extensions but not on the half itself.
A referee showing five minutes of added time who then faces a three-minute injury stoppage in minute 93 does not simply play two more minutes and stop. The three-minute treatment becomes part of the time owed, and the half continues until that debt is paid or the referee judges that further stoppages have balanced the ledger. The board's original five minutes is merely the opening bid.
Extra Time Is Separate
The terminology confuses. "Added time" or "stoppage time" comes at the end of each half in every match. "Extra time" is the thirty-minute extension played in knockout competitions when a match is drawn after ninety minutes. They operate under different rules.
The FA's Law 3, updated in 2026, notes that where competition rules permit teams to use one additional substitute in extra time, each team has one additional substitution opportunity. This is not added time. It is a separate phase with its own duration and substitution allowances. The fourth official's board at 90 minutes has no bearing on the structure of extra time that may follow.
Why Fans Misread It
The common error is treating the electronic board like a countdown clock. Broadcast graphics reinforce this: a timer ticking down from the displayed number, reaching zero as the referee blows. The law says nothing about countdowns. The board shows a minimum, and the referee's watch measures what is actually owed.
The IFAB wording is precise. The fourth official indicates the minimum additional time. The referee may increase it but not reduce it. Every television producer who overlays a descending timer is imposing a framework the Laws do not recognise. The referee stops when the remaining playing time is exhausted and no further time is owed, not when a number on a board reaches zero.
That final decision remains with the referee. The fourth official has displayed the minimum. The law has built the categories. The stoppages have been tracked. But the whistle blows only when the referee decides the debt is paid, however long the board once suggested that might take.
Statistical definitions differ between providers. Figures quoted here are attributed to the provider that published them.