What is the away goals rule in football?

The away goals rule applied to two-legged knockout ties that finished level on aggregate: the side that had scored more goals away from home went through. A team drawing the first leg 2-2 away and the second 0-0 at home would advance on two away goals despite the level aggregate.

UEFA introduced the rule in 1965 with a double purpose: to push visiting teams to attack rather than sit deep, and to avoid replays when ties ended level. For more than half a century it shaped the arithmetic of European nights, turning a single away goal into a currency of its own.

UEFA abolished the rule in its club competitions from the 2021/22 season, announcing the decision in June 2021. The core reasoning was statistical: home advantage had shrunk markedly since the 1960s thanks to easier travel, standardised pitches and changed matchday conditions, so the imbalance the rule was designed to offset had largely faded.

There was also a tactical distortion. Home teams grew cautious in first legs, fearing the weight of a conceded away goal, so a rule meant to encourage attacking football was suppressing it. Extra time created a further asymmetry, as the second-leg host carried the risk of a decisive away goal for 30 additional minutes.

Not in UEFA competitions: in the Champions League, Europa League and Conference League a level aggregate now means extra time in the second leg and, if needed, a penalty shootout. An away goal counts only for what it adds to the aggregate.

The rule has not vanished from football entirely, though. Some confederation competitions and certain domestic cups or playoffs around the world have kept it in different periods. Before a two-legged tie, the reliable move is to check that competition's current regulations, because the same scoreline can mean different things in different tournaments.