In fact, Gronk never touched 'one dime of my signing bonus or NFL contract money,' he wrote in his 2015 book, 'It's Good to be Gronk.' That way, he could save the millions he earned playing for the Patriots. 'I just wanted to throughout my NFL career because I know that - and I've seen it with my own eyes - that it might not last long,' Gronkowski tells CNBC Make It.ĭuring his nine-year NFL career, Gronkowski made a point of only spending the money he made from various endorsement deals he signed with brands like Dunkin' Donuts, Tide laundry detergent and Monster Energy that reportedly earned him more than $3.5 million over his career.
While Gronkowski is still likely to embark on additional ventures in his post-NFL career - he told reporters on Tuesday that he could partner with his brothers on fitness-related projects and that he's open to the idea of competing on ABC's 'Dancing With the Stars' - one thing that's certain is the former NFL star's frugal money habits during his playing days have set him up for a more comfortable retirement.
