In the paragraph below, it says that "A person earning the average tech salart in Silicon Valley would save $42,919 in just five years living in a state like Fl

In the paragraph below, it says that "A person earning the average tech salart in Silicon Valley would save $42,919 in just five years living in a state like Florida where there is no income tax." The median salary from the chart is $90,000, so I suspect the calculation they did was along the lines of 90000 * 9.3/100 * 5 = $41,850. (Perhaps they used a different average than the chart.) So, I don't think they know how marginal tax works either.