10.Progressive taxation is defined as measured by the slope of the effective rate schedule.
11.The spread of bracket rates has been reduced repeatedly over the past twenty years.
12.The Revenue Act of 1986 reduced the top rate from 40 to 28 percent.How ever,the impact upon the effective degree of progression has been off set largely by base-broadening over the upper-income ranges.
13.Debate over the appropriate degree of progression continues,involving a variety of considerations.
14.Various ways of measuring the degree of progression are examined. The improtance of inflation adjustments is noted.
15.Exempions,standard deductions,and bracket limits have been,there by making the wage earner is income tax inflation proof.
16.Making capital income inflation proof remains to be completed,including indexing of capital gains,interest,and depreciation.
The appropriate choice of the taxable unit has been a matter of controversy over the years.