Koch, who has hosted Sunrise for 21 years, revealed his next move after announcing he would be leaving the show.
He told viewers on Monday that he had decided to hang up the boots to focus on his family.
Pinstripe Media was founded a decade ago by him and his wife, who focused on start-ups, business and finance.
Koch is the Executive Chairman of the business while his son is the general manager.
Kochie's Business Builders and Your Money and Your Life are two websites that provide tips to Australians looking to shore up their finances either personally or in business.
A 67-year-old man is behind the business streaming channel ausbiz with another person.
Koch said he would focus more on his side hustles once he left Sunrise on June 9.
He said it was time for him to work more hours and for him and his wife to have more time to enjoy their family.
Koch has been the chairman of the Port AD club for the past four years.
The shock departure of the Sunrise host is expected to have a domino effect.
Koch has been the face of Channel Seven for many years and has been a stalwart of Aussie television.