Television deals have turned English football into a tale of "the haves and have nots" where it was becoming harder to avoid losing money if you were outside the Premier League, said Charles Barnett, head of PKF's Football Industry Group.
"Many clubs outside of the Premier League elite are balanced precariously on the knife edge between survival and insolvency," added Barnett.
"This tension is particularly evident in the Championship, where many clubs gamble with their very survival for a shot at entry to the promised land of the Premier League," he said.
Two-thirds of clubs did not expect to make a profit in their next accounting period if payments for player transfers were not included, according to PKF which surveyed the finance directors of 62 clubs in England and the Scottish Premier League.
PKF have first hand experience of dealing with the fall-out from the failure of a football club.
Administrators from the firm have been running debt-laden Portsmouth since February. Portsmouth were relegated from the Championship at the end of last season and are still negotiating with two potential buyers.
The gap between the Premier League and the rest will yawn even wider next season when a new domestic television rights deal worth one billion pounds a season begins for the top flight, 70 percent up on the current contract.
Bigger Championship clubs are attracting the interest of foreign investors eyeing the riches of the Premier League.
A group of Kuwaiti investors bought former European champions Nottingham Forest earlier this year and Leeds United have been in takeover talks with Dubai-based investment firm GFH Capital.
"There is the opportunity to buy into Premier League revenues at a discounted price," Barnett said, commenting on the benefits for investors in successful Championship teams.
Clubs below the Premier League have adopted rules to cut losses modelled on Financial Fair Play measures being introduced for top European clubs.
Eighty-five percent of clubs surveyed said they expected to comply with domestic or European financial rules in the current 2012/13 season.
Barnett said it was essential that clubs honoured that commitment.
"Clubs are making the right noises but I suspect that many will need to urgently review their five-year-plans with a strong dose of realism if the industry is going to make it through the next few years without any further insolvency cases," he said.
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