Manchester City lost more than $150 million last season as the club maintained its heavy spending on players before winning its first English title in 44 years.
Another $145 million was spent bolstering the squad in the last financial year as transfer spending since the club entered Abu Dhabi ownership in 2008 went beyond $935 million.
But the Premier League champions are starting to stem the tide of their losses and spending as they try to comply with UEFA's Financial Fair Play regulations, which were introduced to curtail spending sprees by the likes of owner Sheikh Mansour bin Zayed bin Sultan Al Nahyan.
The losses of $158 million in the 2011-12 financial year are around half those recorded the previous year.
And manager Roberto Mancini is having to spend less on the squad, with the transfer outlay dropping to 90 million pounds after exceeding 130 million pounds in each of the previous three years.
But City's wage bill rose 15 percent to $287 million on a turnover of $372 million.
That revenue generated by the club exceeded 200 million pounds for the first time as cash coming in from sponsorship doubled to $157 million, thanks largely to a new deal with Etihad Airways.
Attracting sponsors will be crucial if City is to avoid being barred from the Champions League from the 2014-15 season for not breaking even on its football-related business.
Despite its newfound success on the pitch, City is still living in the shadow of neighbor Manchester United, which holds a six-point lead over them at the top of the league.
"Manchester City has come a long way in a relatively short time," City chairman Khaldoon Al Mubarak said. "In the last two seasons we have tasted victory in the FA Cup, experienced the UEFA Champions League, won the Barclays Premier League and with two goals in added time, redefined what is typical of City for a generation of supporters.
"The responsibility lies with all of us to continue the hard work that will ensure that this is only the beginning of a long and successful era for Manchester City."