DUBLIN—With doubts swirling about the solvency of the Irish state in early September, Finance Minister Brian Lenihan summoned a dozen senior government and bank officials to a conference room nicknamed the "torture chamber," a nod to its history as a venue for painful meetings.For two years, Ireland had poured money on a raging banking crisis, to no avail. Each estimate of the rising price of rescuing Ireland's banks turned out too low. Mr. Lenihan needed to halt the drip-drip of bad news that was leading his country to ruin. "I want a final figure ASAP," he told the group.
Two weeks later, the estimate came in: Up to €50 billion—nearly $50,000 for every household in the Emerald Isle.
But now, investors are betting the bill could be higher still and could reignite Europe's sovereign-debt crisis. The unpopular government is bracing for collapse, and on Tuesday, Irish government bonds continued a week-long slide to a fresh record low. The debt is judged as risky as Greece's was this spring just before that nation begged for a European Union bailout.