usUS cities and states face a “looming crisis” after the collective funding hole in the public pension system jumped by $434bn in just one year, raising fears of further Detroit-style bankruptcies.

According to academic research shared exclusively with FTfm, US public pension funds lack $3.85tn that they need to pay the retirement benefits of current and retired workers.

Joshua Rauh, author of the research and a professor of finance at Stanford Graduate School of Business, said: “[The large deficit in US public pensions] is a looming crisis. It is particularly a near-term issue for a number of cities.”

The situation is especially difficult for cities such as Chicago, which Mr Rauh estimates has unfunded pension liabilities that equal 19 years of the city’s tax revenues.

 FT