Tucker joined Private Finance in March, having worked as head of communications at Mortgageforce since September 2008.
Prior to this Tucker worked as a technical manager at John Charcol from 2002 to 2008.
Tucker has just finished a City & Guilds course in art and design, which she says made her want to pursue a more artistic career.
She says it will be a relief to leave the mortgage industry and be able to observe the market as a consumer and not a commentator.
Simon Checkley, managing director of Private Finance, says he will be sad to see Tucker go.
But he says: “I’m happy that Katie is leaving to do something she feels so passionately about.”
Tucker will leave Private Finance at the end of the month.