What happened
The European Central Bank, which sets interest rates for the 20 countries that use the euro, raised its key rate for the first time since September 2023, becoming the first major central bank to lift borrowing costs in response to the energy crisis triggered by the war involving Iran.
The move stands in sharp contrast to its peers. The Bank of England held UK rates at 3.75 percent on 18 June, while the US Federal Reserve kept its own rate in a range of 3.5 to 3.75 percent. Both chose to wait rather than move.
The ECB acted because surging energy prices are feeding through into eurozone inflation faster and harder than policymakers are willing to tolerate. By raising rates the bank is trying to stop those price rises becoming entrenched across the wider economy.
Why it matters
An interest rate rise makes borrowing more expensive and saving more rewarding right across the eurozone, from mortgages in Madrid to business loans in Berlin. It is the main tool a central bank has to cool an overheating economy or tame rising prices.
The decision matters beyond Europe because the eurozone is one of the world largest economies and a huge trading partner for Britain. When European borrowing costs rise it can strengthen the euro against the pound and change the price of goods flowing across the Channel in both directions.
It also highlights a growing split between the big central banks. The ECB is tightening while the Bank of England and the Federal Reserve sit on their hands, a divergence that can push currencies and markets around as investors adjust their bets.
Explained simply
Think of a central bank as the thermostat for a whole economy. When prices run too hot it nudges interest rates up to cool things down, just as you would turn down a radiator.
Interest rates are, in effect, the price of money. When a central bank raises them, loans and mortgages cost more, so households and businesses spend a little less. Weaker spending eases the upward pressure on prices, which is how higher rates are meant to bring inflation back under control.
The catch is that the same medicine can slow the economy and make life harder for anyone with debt. That is the tightrope every central bank walks: raise rates too little and inflation runs away, raise them too much and you risk tipping the economy into a downturn.
Right now the ECB has judged that the danger from energy driven inflation outweighs the risk to growth, so it has chosen to turn the thermostat down on spending. The Bank of England and the Federal Reserve have looked at their own economies and, for now, decided to leave the dial where it is.
What it means for you
For UK households the effect is indirect but real. A stronger euro makes a holiday in France, Spain or Italy more expensive, as your pounds buy fewer euros at the bureau de change, so a summer trip to the eurozone could cost noticeably more.
It can also nudge the price of imported goods. Britain buys a great deal from the eurozone, from cars to food, and a firmer euro can make those imports dearer, adding a little extra to prices on UK shelves over time.
For savers and borrowers the read across is subtler. Diverging central banks influence the exchange rate and the mood in bond markets, which can ripple into UK mortgage rates and the returns on fixed rate savings bonds, though the connection is looser than a change made by the Bank of England itself.
The bigger picture
For two years the world major central banks have moved broadly together, first raising rates to fight inflation and then pausing. The ECB breaking away to hike again marks a notable change and shows how differently the energy shock is landing across regions.
The question now is whether the Bank of England and the Federal Reserve are forced to follow. If energy driven inflation spreads, pressure to raise rates could build in London and Washington too, so the ECB move may prove to be the first domino rather than a one off.
