Via Calculated Risk, the change in personal income taxes multiplied by the percent personal income tax of total state taxes in 2008. (i.e. since personal income tax as a portion of particular State's budget varies from state to state, it's not appropriate to simply measure the percentage drop but rather look to the loss of revenue relative to the personal income tax importance to the State budget.)
The big losers affected by the dramatic drop in personal income: Oregon, New York, Massachusetts, California. (click for state by state comparison)
It's difficult to imagine that F/Y 2010 personal income tax collections will fare better for Massachusetts, given 1) that the dramatic drop was significantly caused by the drop in the capital gains tax and 2) given the size of the capital losses in '08 and the availability for carryover to '09 that the same tax '09 will be much larger.
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