The paper reports that the 48-year-old is being booked by corporate clients at a cost of £100,000 for a 12-minute set – which works out at £8,333 per minute or £140 for every second she is on stage.
That’s on top of the £8m she is tipped to make from signing a recording contract with Simon Cowell.
Before her appearance on the show Boyle, from West Lothian, was unemployed and lived on £130 a week in benefits.
“She’s the biggest star to have come out of Britain’s Got Talent, so her price to sing reflects that,” said a source close to the singing sensation.
“These fees mean it will take 10 dates for her to make a million pounds, which is unprecedented for a reality show winner.”
However, Boyle has yet to see a penny of her projected earnings, and has been advised by show bosses to carry on claiming her benefits for the time being.
“We had to follow the same procedures as with every other contestant, so it didn’t look like we were trying to tip the vote in her favour,” the source said.
“But now we can start making her some serious money. We have to do it soon to capitalise on the huge interest in her, especially in America.”
Boyle received a rapturous reception on the second night of the Britain’s Got Talent live tour at the Sheffield Arena on Saturday.
Earlier in the evening some members of the crowd booed when her name was announced – but she received a standing ovation for her performance, despite appearing to stumble over the words to Memory.