KATIE COURIC has put her dream wed­ding to investment banker John Molner on indefinite hold after the two squabbled over the prenup!

Sources say the TV veteran, 56, is determined to protect her reported $55 million fortune if she splits from Molner, who’s said to be worth $20 million.

“Katie and John started butting heads over how to separate their finances just weeks after they got engaged,” said an insider.

She wants him to sign a pre-nup, but he’s resisting.”

The bubbly former “Today” show host – whose first husband, Jay Monahan, died of colon cancer in 1998 – accepted Molner’s romantic proposal over La­bor Day weekend, despite the 50-year-old divorced dad’s checkered romantic past.

As The ENQUIRER report­ed, Molner two-timed Katie early in their relationship with 27-year-old Jessica Hsu, a col­league of his at the financial firm Brown Brothers Harri­man. “Many of Katie’s friends think John is bad news,” said the source. “But as soon as he proposed, Katie began inter­viewing caterers, lining up a wedding planner and shop­ping for a wedding dress.”

After Katie’s daughters – Ellie, 22, and Carrie, 17 – begged her to make John sign an iron­clad prenup, she finally saw the light, said the source.

“Katie told John she wants to keep their finances sepa­rate and she wants monetary compen­sation if he cheats on her,” said the source.

“John exploded. He claims that he’s a self-made man with money of his own and thinks a prenup is a bad omen for their future.

“Now Katie is rethinking the relationship, and she’s put preparations for their wedding next summer on hold.”

A rep for Couric denied there is any change in wedding plans and says there is no fighting between the couple, adding that the story is “laughable.”