Meanwhile, Missouri voters rejected a pair of unique ballot measures backed by the Republican-led Legislature. One defeated measure would have required all citizen-initiated constitutional amendments to pass in each of Missouri’s eight congressional districts instead of by a simple statewide majority — a high standard used by no other state. The other measure would have directed lawmakers to repeal the state’s individual income tax while authorizing a state sales tax expansion.
and the tax one.
this is a pretty comprehensible outline of each US state’s tax structure. it goes in depth as well, but what you’re probably looking for is on pages 152 and 153 (that’s their specific outline on Missouri), 204-205 (same as Missouri, but the US average) 24-32 (income tax features) or 33-35 (sales tax features). the pdf has chapters so it’s easier to navigate.
in short, in the US nearly every tax is regressive [applies more heavily to the poor]. in states with no income tax, the poor pay a much greater percentage of their income toward taxation [all taxes, not just income tax. fuel taxes. sales taxes. property taxes, &c] than the rich do. properly built, progressive [applies more heavily to the rich and wealthy] income tax structures balance that out so everyone pays about the same amount. see pages 28-30
it’s specifically why US republicans seem hell bent on removing income taxes