The new study found that Barca generated a record-breaking revenue of $935.9m (840.8 million euros) last season, becoming only the third club to hold the top position.
As a result, Real Madrid slip into second with $842.9 million whilst Manchester United remained in third.
The report outlines how the Catalan club has reduced its reliance on broadcast revenue deals and shifted its focus on revenue channels within its control.
The Spanish giant is expected to retain its top spot for next year and could become the first $1 billion Money League club in future seasons.
The positions are ranked on clubs’ ability to generate revenue from factors such as matchday sales, broadcast rights, and commercial sources — based on the 2018/19 season. It does not include money generated from player sales.
The top 20 money-spinning clubs generated a staggering $10.3 billion in the 2018-19 season, an 11% increase from the year before.
Elsewhere, Manchester United is at risk of losing its position as the highest-earning English Premier League club next year due to its declining performances on the pitch.
The Old Trafford outfit failed to qualify for the UEFA Champions League this season and currently sit outside the…