Ireland Guaranteed Its Banks and the State Nearly Went With Them
In September 2008 Ireland guaranteed the liabilities of its banking system, an amount several times national output. The guarantee transferred bank losses onto the sovereign.
The Decision
In late September 2008, over a single night, the Irish government guaranteed the deposits and most debt of its principal domestic banks. The covered amount was several times the country's annual economic output.
The immediate objective was achieved. The banks retained access to funding and the imminent liquidity crisis was averted.
Why It Went Wrong
The decision rested on a judgment that turned out to be incorrect: that the banks faced a liquidity problem rather than a solvency problem.
If the issue is liquidity, a guarantee is close to costless. It restores confidence, funding returns, and the guarantee is never called.
If the issue is solvency, meaning the loans are genuinely worth far less than carried, a guarantee does not solve anything. It transfers the losses to whoever provided it.
A guarantee is free when the problem is confidence and enormously expensive when the problem is the loans. Distinguishing the two is the entire decision.
What the Loans Actually Were
Irish banks had lent heavily into a property and construction boom, with substantial exposure to development land and speculative projects. Anglo Irish Bank in particular had concentrated aggressively in commercial property development.
When property values collapsed, development land in some cases fell toward agricultural value, meaning losses far beyond what stress scenarios had contemplated. These were not temporarily illiquid assets. They were permanently impaired.
The Consequence for the State
Having guaranteed the banks, the government had to recapitalise them as losses emerged. Anglo Irish was nationalised, and the cost of supporting the banking system pushed the deficit to extraordinary levels.
Ireland entered an assistance programme with European institutions and the IMF in late 2010, accompanied by severe austerity. A banking crisis had become a sovereign crisis through the guarantee.
The Doom Loop
This is the clearest example of the mechanism later named the sovereign bank loop. Weak banks damage the sovereign that supports them. A weakened sovereign damages the banks that hold its debt and rely on its backing. Each deterioration worsens the other.
Breaking that loop became a central objective of European banking reform, motivating banking union, a single supervisor, and resolution rules designed to impose losses on bank creditors rather than on taxpayers.
Ireland did eventually recover, exiting the programme and returning to growth, but the cost in output and public finances was severe and prolonged.
The Bottom Line
Ireland guaranteed a solvency problem believing it was a liquidity problem, and the losses moved from bank balance sheets to the state. The diagnosis determines whether a guarantee is cheap or ruinous.