In brief, tax rates for the wealthy have fallen more than for other income groups. Tax rates for the very wealthy have fallen more than they have for the merely wealthy. Incomes at the top have also increased much more quickly than incomes have for other groups.
Add it all up, and you can see why the wealthy are paying a greater share of federal taxes even though they are paying less tax on each dollar they earn. They’re simply making many more dollars than they used to.
