The former glamour model plans to show a more intellectual side to herself in the new role, discussing topical issues such as the recession, feminism and the education system.
"It's simple. Katie Price has grown up," she told The Sun. "I am now 33 and I am much more interested in what's going on in the world than I was before. Maybe I was uninterested in the past because I was arrogant. Maybe it was because I was living in a bubble. But now things are different.
"I have kids who I have to think about. What kind of future will they have? How will I make their lives secure? These are questions I have to ask myself. Of course I still like to let my hair down from time to time - I'm only human - but I've become more sensible.
"The reason I am doing this column is because I want to show people I'm not all lashes, fake tan and boobs. I've got more common sense than most celebrities and I've got a point of view on most subjects.
"I want it to carry serious messages without being boring. I have a view on things that are political and if I think something needs changing, I fight for what I believe is right. I'm not a quitter. And unlike some, I haven't shied away from British taxes and gone to live in Monaco. I love Britain and everything about it."
Price has taken part in debates at Oxford Union and Cambridge Union in recent months
She also appeared on Newsnight earlier this month to discuss PIP breast implants with host Jeremy Paxman.
The Sun on Sunday launches tomorrow (February 26).