[dragonwriter]

Or, even easier and more effective, abolish estate and gift and capital gains taxes, and tax inheritances, gifts, and capital gains as normal income to the people recieving them.

Because for some recipients, especially for the non-rich, these are non-repeatable, you do need to add some handling to the regular income tax system to address inconsistent incomes with multi-year smoothing mechanisms to make taxation of those kinds of income fair, but that also makes taxation of variable regular income more fair, too.