LONDON — The Premier League’s 20 teams will meet Wednesday in London to discuss ending a 25-year-old consensus on revenue sharing that has made the soccer league not only the world’s richest but also one of the sport’s most equitable.

At the heart of the debate, which will end with a vote of one representative from each of the 20 teams, is income from overseas television rights sales. That segment of the Premier League’s revenue has boomed in recent years, to about £1 billion a year (about $1.3 billion). Currently, each team gets an equal share. But pressure from a group of the country’s biggest and richest clubs — a group known collectively as the Big Six — has compelled the league, led by its executive chairman Richard Scudamore, to propose a new formula in which the top performing teams get a bigger slice of the foreign millions.

The Big Six, which includes powerhouses like Manchester United, Manchester City and Chelsea, have long pursued better terms for themselves, arguing that fans in far-flung markets are tuning in to watch them and not the league’s lesser lights. Under the new formula, which teams have had about a month to digest, 35 percent of the foreign-sourced television income would be based on where a team finishes in the league table.

The proposal to be voted on Wednesday would allow 13 teams to get a larger payout than under the current setup; 14 votes are needed for approval.