Before the tax cuts, the highest marginal income tax rate was 39.6 percent.

Three times in this century the United States has significantly reduced the top marginal income tax rates.

Some 15,000 crofts, small family farm units that offer marginal incomes and mainly part-time employment, have survived.

But investors in the so-called "bubble" pay a rate of 33 percent on marginal income.

In 1988 the tax was rebased to 1982, but at the cost of gains being charged thereafter as if they were marginal income.

The highest marginal income tax rate was cut to about 51 percent this year from 72 percent in 1989.

(For example: better your marginal income should be lower by the same amount that person B 's income rises.)

Theirs was a blue-collar family with a marginal income.

And this marginal income of the rich is not going to pay for food and is not being invested in GB.

There's also marginal income from more mainstream commissions (eg.