And consider a real world observation.

In the 2009-10 tax year, more than 16,000 people declared an annual income of more than £1 million to HM Revenue and Customs. This number fell to just 6,000 after Gordon Brown introduced the new 50p top rate of income tax shortly before the last general election. The figures have been seized upon by the Conservatives to claim that increasing the highest rate of tax actually led to a loss in revenues for the Government. It is believed that rich Britons moved abroad or took steps to avoid paying the new levy by reducing their taxable incomes.

Responding to Marginal Tax Rates

After the election, my wife and I are going partial Galt. We’re in California, so our state income tax went up in addition to what’s sure to come out of Washington.

My wife quit her job last week. I increased my participation in a tax deferment plan offered by my employer to bring my taxable income as close to $250K as possible. We’ll be cutting back a little, but the government is going to getting a whole lot less.

My wife’s entire salary barely covered our tax bill – she was 100% slave to the government, while I was a 10% slave. Now she is 100% free, and I’ll be a ~35% slave As a couple, 17.5% of our time is slaving on the government plantation from an astounding 55% previously.

My wife is deliriously happy, our children are delighted to have mom home, the dog gets more walks, and I find not spending money rapturously satisfying.

I guess the Laffer Curve matters.