County Executive Steve Bellone said he was taking the action after an independent task force found it would have a deficit of $530 million in a three-year period.
"After weeks of analyzing our County's finances, our fiscal assumptions and our costs we now have a picture of the real state of our finances. And the truth is worse than any of us could have imagined," Bellone said in a statement on the county's website.
Suffolk County's financial strains could worry a municipal bond market already unnerved by ongoing bankruptcy proceedings in Jefferson County, Alabama, and signs of financial problems in other municipalities around the nation.
Bellone said the emergency declaration empowers him to immediately embargo up to 10 percent of funds in each department of Suffolk County, which forms the eastern half of New York's Long Island and includes the exclusive Hamptons resort area, the location of some of the most expensive residential properties in the United States. "After being told the 2011 budget was balanced, I was stunned to learn it was actually out of balance by more than $33 million, the first time Suffolk County ended a year in deficit in 20 years," Bellone said.
The future looked even worse, with a projected $148 million deficit for 2012, rising to $349 million by 2013.