This Boston Globe op-ed references a joint report between cSPA and the Boston Policy Institute that predicted last June that the falling values of empty office buildings would eventually create a revenue shortfall of $1.4 billion to $2.1 billion.
This article mentions a June report from cSPA that found that Boston's declining commercial tax revenue could fall further in the next five years than previous estimates predicted.
Evan Horowitz, executive director of cSPA, is quoted in this Boston Globe article on the revenue loss that could result from a proposal to cut Massachusetts' income tax rate.