First, demonstrate that we can cut spending and live within a budget, then lets take a look at the mechanisms of taxation.
We could balance the budget (not counting Social Security, government is borrowing around $200 billion a year) on justing getting rid of the IRS. That would save us nearly half a trillion dollars a year right there. Nearly quarter of that trillion ($240 billion) will be saved directly by people in not having to spent time and money complying to a complicated tax code (IRS).