It is made clear in Twilight: Breaking Dawn that the characters of the novel have a large nest egg of money saved away after years of hard work and future predicting lottery wins. The Cullen family has accumulated a vast majority of their assets from father Carlise Cullen, who works as a physician. This infographic is for all of the moms and finance students who constantly wondered the realistic affairs of their financial situation.
If the Twilight characters had to pay taxes, Carlise Cullen would pay the most at $32,000 a year. However, with compound interest on his assest from 1670, he is worth $36.3 billion. Edward on the other hand has a personal nest egg of $45 million after saving since the early 1900s. Maybe it is worth it to believe in vampires.