Abolish all taxes except...

...the property tax:

In 1879, Henry George ... found it perverse that we tax productive activities like work and innovative investment while letting landowners grow rich simply because they scooped up property at the right time. In that spirit, George called for a “Single Tax” on the unimproved value of land. There’s a certain compelling logic to the Single Tax that stands the test of time. When you tax income, aren’t you punishing people for working hard? But when you tax an asset like land, you’re simply encouraging the most valuable use of that land. In the years since George faded from the scene, a number of economists, from Milton Friedman to Paul Romer, have found virtue in the Single Tax...

Via Rebecca Wilder