Wall Street Journal, Falling Tax Revenues Slam States, by Conor Dougherty:

State tax revenues in the second quarter plunged 17% from a year earlier as rising unemployment and reduced spending hurt sales- and income-tax collections, according to Census Bureau figures released Tuesday.

The decline was the sharpest since at least the 1960s. The biggest drop among major revenue sources was in state income taxes, which were down 28% from a year ago. Sales-tax revenues fell 9%. About two-thirds of state revenues are derived from sales and income taxes. The numbers aren't adjusted for inflation or changes in tax rates. …

States across the country saw big declines in personal income taxes, the largest single source of state funding, representing about a third of states' overall revenues. Eleven states — including California, New York and Wisconsin — saw personal income taxes fall more than 30%.