The Jamaican singer, who beat Scarlett Lee and Anthony Russell on Sunday night’s dramatic final, may not be given the same prize as his winning predecessors.
But he is expected to be offered a recording contract with music mogul Simon Cowell’s label Syco.
The £1 million record deal is believed to previously have been used to market the winner’s single, which traditionally made it to the Christmas number one slot.
Winners would usually be offered an initial advance of £150,000 for their first album and £237,000 for their second, according to the Sun.
A third album could see the winner bag an advance of £315,000 and upwards of £400,000 for a fourth.
A spokesperson for the show told the Mirror that Harris would be offered a “life-changing” record deal but refused to disclose a sum.
Standard Online has contacted representatives of Syco for comment.
The reports come after Harris bagged the winning title before taking to the stage to perform his winner’s single, The Power of Love, with James Arthur.
“I just won the X Factor,” he said.
Louis Tomlinson, who has mentored him throughout the process, couldn’t stop smiling on winning the show in the same year he made his debut as a judge.