According to TMZ, producers from the show "pursued Perry relentlessly for weeks", and even increased their offer from $18m to $20m for a one-year contract.
© WENN
The 'Wide Awake' singer allegedly made it clear that she was not interested in the role and that the fee offered was not the reason behind her decision.
Sources have apparently claimed that aside from the fact that her schedule made it impossible to do the show, she simply didn't see signing up for the series as the right career choice.
© PA Images / Ian West/PA Wire
Perry appeared as a guest judge on the UK version of The X Factor in 2010 and has hinted that she has had to turn down offers of judging roles ever since.
"People have been interested in me judging other people," she told chatshow host Graham Norton in June.
"I would do it but I'm just not ready for it yet. Maybe in the future, I would love to."
Watch the video for Katy Perry's latest single 'Wide Awake' below:
