what's the most reliable way to become a millionaire well three percent of millionaires made their money through real estate three percent in other ways so just technology health care law and politics five percent through entertainment sports and media ten percent by financing investment fourteen percent through working executive positions like directors board members and ceos the important people and unsurprisingly high twenty four percent made their millions from inheritance but to the most sure-fire way to earn the big bucks is to start your own business and become an entrepreneur as forty one percent of millionaires are entrepreneurs