"How a Debt-Ceiling Crisis Could Become a Financial Crisis"

Annie Lowrey @ NYTs Economix:

Come mid-October, the United States will have only $30 billion of cash on hand. On any given day, its net payments can reach as high as $60 billion. That means that unless Congress raises the debt ceiling, allowing the Treasury to issue new debt, the United States may find itself unable to make all of its payments — stiffing government contractors, or state and local governments, or even its bondholders.

Economists widely agree that such an unprecedented event would have profound effects for the markets, likely precipitating a stock-market sell-off and setting off a round of global financial turbulence. But it has always been a little unclear just how it may play out. The Treasury might announce it would be forced to delay some payments, promising to do what it could to make sure bondholders were made whole. But then what?