Investors will hope Kevin Warsh offers ‘comfort blanket’ at annual meeting of central banks amid bond market anxiety

The new US Federal Reserve chair, Kevin Warsh, faces a critical test this week amid anxiety in government bond markets over inflation and Donald Trump’s tax and spending plans.

As the world’s most powerful central bank prepares for its annual Jackson Hole conference, analysts said bond traders would be looking for signals from Warsh over its commitment to fighting inflation.

As yields are dragged higher in the UK, Europe and Japan, the impact for consumers and businesses will be far-reaching

• ‘Starve the beast’? The $40tn cost of Republicans’ false promises to cut spending

Government borrowing costs around the world have surged to the highest levels in decades amid growing fears over US bond market turmoil.

Anxiety about Donald Trump’s handling of the US economy, and concern that the US president’s war with Iran is driving up inflation, are causing a sell-off in the US bond market.