The vast majority of people take the standard deduction. Only about third of taxpayers itemize deductions. Many of those would probably be covered by mortgage i

The vast majority of people take the standard deduction. Only about third of taxpayers itemize deductions. Many of those would probably be covered by mortgage interest and donations which the IRS already knows about. The self employed and wealthy probably would still need to do their taxes. Self employed is only 7% of workforce. Even their taxes would be easier because they would know all of the info that the IRS collected and wouldn't have to collect the paper forms.