A UK-based accountant for Brian McFadden mistakenly emailed the presenter’s invoice for the TV3 Toy Show to the entire TV3 newsroom.
Staff at the television station's newsroom, Ballymount all received the former Westlife singer’s bill - when his agent failed to send it to the finance department.
The 34-year-old hosted the inaugural TV3 Toy Show with Karen Koster on Friday night.
He controversially told Near FM DJ Jamie Jay Car that he was going to receive “probably your salary" for the one-off show.
He wrote on social media network Twitter that he was set to earn "probably your salary to fly in for one night".
"It is disappointing that this confidential information has been leaked into the public domain," a source from TV3 said to Independent.ie.
The station has confirmed it has so far received around a dozen complaints from members of the public regarding the 90-minute broadcast.
The Ballymount-based station broadcast the popular show live from the RDS last Friday to an overall audience of more than one million viewers.
One complaint forwarded to the Broadcast Authority of Ireland, which have now been referred to TV3, expressed anger at McFadden for grabbing a toy doll from Koster as he exclaimed: "Woman we need to talk."
"It was not TV3's intention to cause any offence and we wish to apologise to viewers if they were offended by the clip," a spokesperson from TV3 said regarding the complaints.