In an interview with Stephen Fry for the Financial Times, the Judas hitmaker says that at one point she was $3m [£1.82m] in debt - despite having had five No. 1 singles.
Gaga, 25, said: 'I put everything in the show, and I actually went bankrupt after the first extension of the Monster Ball. And it was funny because I didn't know! And I remember I called everybody and said, 'Why is everyone saying I have no money? This is ridiculous, I have five No. 1 singles' - and they said, 'Well, you're $3m in debt.''
The tour, which ended last month, was seen by 2.5m people and finally managed to rake in £138m.