HARTFORD, Conn. (AP) If you're a billionaire living in Connecticut, chances are the tax department is keeping an eye on you.

Connecticut tax officials track quarterly estimated payments of 100 high net-worth taxpayers and can tell when those payments are down. Of that number, about a half-dozen taxpayers have an effect on revenue that's noticed in the legislature and Department of Revenue Services.

Kevin Sullivan, the state's commissioner of the Department of Revenue Services, said that with one exception, state officials don't approach the super-rich.

Two years ago, tax officials were alarmed that a super-rich hedge fund owner might leave and reduce the state's income tax revenue. They met with the unidentified taxpayer. The effort was partly successful, with the taxpayer leaving Connecticut but agreeing to leave the hedge fund behind.