We Don't Need A "Great Experiment" To Know How Much A Big Sales Tax Hike Would Cost Missouri

The Missourian takes a look today at Rep. Chris Kelly's (D-Columbia) proposal (HB152) to lower the state's income tax, eliminate the corporate income tax and hike the state sales tax.  Kelly's bill is a little different than Republican proposals or Rex Sinquefield's initiative petitions, but Kelly has been a supporter of "fair tax" ideas in general for some time now.  

Kelly and I aren't going to see eye to eye on the wisdom of embarking on  this sort of "great experiment" in tax policy (his words), but I want to take issue with one point he makes in the article. According to Kelly, there is "no current data to determine how much revenue will be gained or lost if a sales tax is used instead of an income tax." While it's true there isn't a fiscal note for his HB152, researchers inside and outside the Capitol have been looking at this very question for some time now.  For instance: 

The exact numbers are going to change with each proposals' specific provisions, of course, and depend on what sort of goods and services will be taxed for the first time at the increased rate.

But at this point in the game, we have a pretty good idea of what will be required to make this "great experiment" revenue neutral.  And it's downright scary.