Barcelona topped the 2018/2019 earnings table with 840.8 million euros ($937 million), a record 83.5 million euros ahead of Real (757.3 million euros), while Manchester United, the highest-placed British club in third, earned 711.5 million euros (£627.1 million) for 2018-19.
Barcelona lead bitter opponents Real by ₤736 m, a document space in between very first and 2nd in the background of the Deloitte research study.
"Manchester United have been the top English club since we started the Money League but that could come under a bit of pressure when we do it in 2021", he said.
In London, Tottenham overtook Arsenal and Chelsea to become the capital's biggest-earners, mainly due to Spurs' broadcast revenue from the Champions League run that saw them reach 2019's Madrid final.
Deloitte said it expects Tottenham's matchday revenue to soar past €117m (£100m) for the first time next year after a full term in the new 62,062 stadium, which the club occupied for less than half of the season covered in the report.
Deloitte credited the club's decision to bring control of merchandising and licensing activities in-house, a change which allowed the La Liga champions to increase revenue.
While Jones says revenue growth in Europe's big soccer leagues continues to outpace other sectors, mainly because of broadcasting rights, there is a marked concentration of increase at the top－the combined revenue of the top five clubs is greater than the combined total of the clubs ranked 10th to 20th.
The top 10 is completed by Chelsea (€513.1m) and Juventus (€459.7m), with Arsenal (€445.6m) just missing out by a single spot.
French side Lyon is the other new entrant, and the highest riser overall in the list, moving up 11 places into 17th, with revenues of €220.8m, giving France two teams in the top 20.
Manchester United have been the highest-ranked English club since Deloitte first compiled the Money League survey based on the 1996-97 financial results.
This is due to the fact that the English club's projected revenue for the 2019/20 season is set to drop to €660m partly as a outcome of the Old Trafford side's failure to qualify for this season's UEFA Champions League tournament. In the last five years the collective broadcast revenue of the top 20 clubs has grown at a compound annual growth rate of 11%, the most of any of the revenue streams.