There's also the issue of different types of taxes other than the income tax as well as a different theoretical look at the income tax. True consumption taxes, where you tax direct resource consumption are IMV morally legitimate. Higher tax rates on the extremely wealthy (not just making 250k in one single year) are legitimate as well in my view. No one with less than $1 million in net worth should even have to look at an income tax form IMV. Resource consumption taxes could be levied without the vast majority of people filling out forms as well.
National Medical Insurance (let's call it what it is at this point) could also be vastly less expensive if Medical industries were deregulated. Most of the big budget problems seem to be coming from Medical insurance. It has its claws reaching in lots of different places. Much like military programs, but Medical reaches into private business and individual budgeting problems.
But nobody's really talking about a balanced budget at this point. We could meet reasonable debt to GDP goals in the next few years very easily by merely reducing military to a reasonable level & not raising taxes.