The investors trying to keep the Kings in Sacramento made key concessions to the NBA, including a promise to limit the amount of league revenue sharing they would accept, according to a source close to the ownership group.

The concessions were made shortly before the NBA's relocation committee voted last Monday to recommend the team stay put instead of moving to Seattle. Although the group is effectively surrendering millions of dollars a year, it would surely make its bid more compelling to the NBA, which has final say on who will own the Kings.

"This is another step to show their commitment to the team and their belief in the opportunity (in Sacramento)," this source told The Bee.

The concessions were first reported by SportsBusiness Journal.

The Sacramento group, led by software tycoon Vivek Ranadive, told the NBA it would accept fewer revenue-sharing dollars while the team was still playing at Sleep Train Arena. Once the team moves into the proposed downtown arena, the Kings would take no money at all. The arena is supposed to open in 2016.

The NBA created a new revenue-sharing scheme last season in which wealthier franchises direct more of their profits to the struggling franchises. The magazine said the Kings, who had the league's worst attendance in the just-concluded regular season, would expect to collect about $18 million a year.

The Bee's source couldn't confirm that number. About a year and a half ago, in a letter to the team's current owners the Maloofs, the NBA calculated that figure at about $15 million.

The new revenue sharing formula goes beyond the giant pool of national television money, which is divided up among the teams. The Kings' share of the TV money tops $30 million a year.

The concession could have been key in the relocation committee's 7-0 vote. Seattle investors Chris Hansen and Steve Ballmer have been touting their city as the more lucrative market - and have been portraying Sacramento as a drain on the NBA's profit-making teams.