someone above suggested the welfare aka safety net amounts to 40% of total expenditures, not 50%. Also once you exclude the under 20 population from your basic

someone above suggested the welfare aka safety net amounts to 40% of total expenditures, not 50%. Also once you exclude the under 20 population from your basic income you should exclude their welfare aka safety net costs. But in general your calculation has nothing to do with the cost of distributing welfare - the main driver behind basic income - instead you simply want to tax the rich and redistribute the money to the poor. I am not saying it is not a good idea, all I am saying is it has nothing to do with basic income.