Tax Foundation has an interesting look at the different tax rates that the various states levy on corporations
It has long been a common tax savings technique to shift income from high tax states to those with low or zero State income tax rates. When we were in California, we helped clients shift a lot of income from that state’s high rate corp tax to zero tax states, such as Washington and Nevada.
There are a number of requirements to do this legally and avoid problems with the high tax state agencies who obviously don’t like this strategy; so anyone considering doing this should work with an experienced professional tax advisor and not try this technique on their own.
Tax Guru - Ker$tetter Letter 