Chelsea owner Roman Abramovich's loan to the club's parent company Fordstam has surpassed £1 billion, accounts show.
The loan to Fordstam from the Russian oligarch, who purchased the Blues in July 2003, has reached £1.041bn, up from £984million the previous year.
Accounts for Fordstam, the company through which Abramovich owns Chelsea, for the year ending June 30, 2014 show the interest-free loan is repayable on 18 months' notice, but also suggest the Russian billionaire is fully committed to the club.
Chelsea are determined to abide by UEFA's financial fair play regulations and be less reliant on Abramovich's vast personal fortune.
Significant income was retrieved through player sales, with the Premier League champions making a profit on player trading of £65.1m with the sales of Juan Mata (Manchester United), Kevin de Bruyne (Wolfsburg) and David Luiz (Paris St Germain).
However, Chelsea's Brazilian contingent has grown to five players after they agreed to sign teenager Nathan from Atletico Paranaense yesterday.
The 19-year-old attacking midfielder has passed a medical, agreed personal terms and will complete his move on July 1.
"I am very happy to be joining Chelsea, the champions of England, and I hope I will be able to learn a lot and develop my game," he told the club website (www.chelseafc.com).
Nathan joins fellow countrymen Oscar, Willian, Ramires and Filipe Luis in the squad.