West Ham require an UEFA license to play in the Europa League and complying with the license terms means meeting tougher UEFA Financial Fair Play regulations.
While Premier league Financial Fair Play allows £105m of losses in three years UEFA restricts losses to 45 million Euros (£33m) over three seasons, The maximum loss if the owners do not inject equity is just 5 million Euros (£3.6m) when compared to £15m allowed by the Premier League.
There are no wage restrictions like those imposed by the Premier League.
Clubs must also keep up-to-date with their taxes, their transfer fees and pay player wages on time to comply with 90 pages of European Financial Fair Play regulations.
West Ham have made net losses of £18.6m over the past three seasons. They posted a loss of £25.4m in 2012 following relegation to the Championship, in 2013 the losses reduced to £3.5m after our promotion back to the Premier League and the last set of accounts for 2013/2014 season showed a profit of £10.3m.
Although West Ham are over the £3.6m limit the share holders have injected over £49m in loans to club to comply with UEFA rules.
Manchester City and Paris St Germain were both handed £49 million fines and transfer restrictions last season although UEFA president Michel Platini has hinted the rules might now be “eased” at the end of the season. Changes are planned which would allow rich owners to embark on a short-term spending spree, providing they are not borrowing money to do so and they present Uefa with a clear plan for breaking even in subsequent years.