The firm building the new Wembley Stadium has revealed that its losses on the project totalled £106m ($184m) in the first half of its financial year.
The redevelopment of Wembley is months behind schedule
Australian firm Multiplex, which is behind schedule on the giant London project, admitted the losses were "extremely disappointing".
They contributed to an overall loss of £50m for the six months to 31 December.
Earlier this week England's Football Association said Wembley would not be ready for May's FA Cup Final.
The game will instead now be played at Cardiff's Millennium Stadium.
Multiplex chief executive Andrew Roberts insisted on Thursday morning that the company did not expect any further Wembley losses beyond the £106m.
It said the figure - amounting to £120,000 a day since 31 January - included all the penalty payments it is liable to pay for not completing the stadium on time.
The company said factors delaying Wembley's completion included subcontractors' performance, changes in design, relations with trade unions for those working on the site and the weather.
However, Multiplex insists there is no prospect of it going bankrupt and leaving the stadium unfinished. It said it was "disappointed" by the FA's decision to move the final.
"Nothing has changed since the end of January, when we said there was a 70% chance of the stadium being ready for the 2006 FA Cup final," a Multiplex spokesperson said this week.
"We were not able to increase this to 100%, so the FA decided to make alternative arrangements."
Multiplex agreed a fixed-price contract of £445m to build Wembley Stadium - with the project set to cost the FA £757m in total.
Difficulties with the redevelopment of the 90,000-seat stadium prompted the resignation of Multiplex founder and executive chairman John Roberts in May as the group blamed "cost blow-outs" for the spiralling cost of the stadium.
Despite the £50m first half loss, which compares to a slight £5m profit for the same period 12 months previously, Multiplex said it remained on target to make a full year profit of £50m.
Its group-wide revenues for the first half rose 9.6% to £730m.
Apart from Wembley, Multiplex said its construction division remained strong, with 41 of its other 42 current projects achieving expected margins.
"The outlook for the division remains strong within both Australia and internationally, following continued success in securing profitable new work," it said.
Multiplex's other construction projects include the White City shopping development in west London.