A very large share of the public has no income that hasn’t already been reported to the IRS by the payer and doesn’t itemize deductions. Under the circumstances, the sensible thing would be for the IRS to send everyone a sheet of paper that says “based on the income that’s been reported to us and your family status from last year, your taxes owed (or refund owed to you) is $X with standard deductions. If something’s changed, or if that income number is wrong, or if you want to itemize deductions, you should fill out forms blah blah blah. Otherwise, just send a check.” A lot of us would still need to wrestle with the forms and nobody likes to give up money, but this would be much more convenient for millions of people. We don’t do it because H&R Block and TurboTax don’t want to lose customers and, crucially, because the conservative movement wants taxes for ordinary people to be as annoying as possible. Rich people don’t care about this kind of simplification because they itemize their deductions and hire accountants. But they benefit from middle class people resenting the tax process because it helps them build the case for low tax rates.
Yglesias >> Why Taxes Are Annoying