The Federal Reserve – the US central bank, known as the Fed – has increased interest rates for the ninth time in a row.

The rate has been increased by 0.25 percentage points in an effort to bring down inflation, which in the US stood at 6% over the 12 months to February.

A higher increase had been expected prior to the collapse of Silicon Valley Bank, the rescue of regional US banks and the takeover of Credit Suisse.

At the start of this month, before the worst banking turmoil since 2008 began, Fed chair Jerome Powell had floated the idea of a 0.5 percentage points increase, a speeding up of rate increases.

High interest rates lead to higher profits for lenders but also put pressure on banks as some government bonds, state IOUs, lose value.

Following Wednesday’s increase, US interest rates stand at 4.75% to 5%, up from 4.5% to 4.75% since the last increase in February.

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What is happening to banks and should we be worried? Sky’s Ed Conway explains.

In the US, the interest rate is a range, rather than a single percentage – as in the UK – because the Fed is not permitted to set a specific number.

A target rate is instead set as a guide for banks to follow.