Interest rates could rise again across the world – here's why

BBC Business (Finance) By a Senior Financial Correspondent

A global shift in monetary policy appears to be gathering pace, as central banks pivot from a period of stability to a renewed fight against inflation. The European Central Bank has already fired the starting gun with a decisive rate hike, and all eyes are now on the U.S. Federal Reserve and the Bank of England, who are poised to make their own critical decisions in the week ahead. For households and businesses, the message is clear: the era of predictable borrowing costs may be ending.

Why this matters

After months of holding steady, the world's most influential central banks are signaling that their patience with above-target inflation is wearing thin. Spikes in energy prices, fueled by geopolitical tensions, are forcing a reconsideration of the "wait-and-see" approach.

This potential pivot back to a tightening cycle carries significant implications for the global economy, affecting everything from mortgage payments and car loans to corporate investment and national growth prospects.

The European Central Bank makes its move

The European Central Bank (ECB) set a hawkish tone this week, delivering a clear signal that the fight against rising prices is its top priority.

The bank raised its key interest rate to 2.5%, citing persistent inflationary pressures. In its statement, the ECB warned that inflation was "set to remain well above" its 2% target for some time, pointing directly to the economic fallout from the U.S.-Iran war and its impact on energy markets.

This move, after a period of holding rates, has been interpreted by markets as a leading indicator of a broader, coordinated response from Western central banks.

All eyes on the U.S. Federal Reserve

The main event for global markets arrives this Wednesday, when the U.S. Federal Reserve concludes its policy meeting. The Fed has held its benchmark rate in a 3.5% to 3.75% range for five consecutive meetings, with its last move being a rate cut in December.

Now, the calculus has changed dramatically.

The case for a hike

Wall Street has rapidly shifted its expectations toward a rate hike, a scenario that seemed unlikely just months ago. Several key factors are driving this sentiment:

• Stubborn Inflation: The latest data shows U.S. inflation at 3.4%, still significantly above the Fed's mandated 2% target. This persistence has eroded confidence that price pressures would fade on their own.

• Geopolitical Jitters: Surging oil prices, a direct consequence of the U.S.-Iran conflict, are feeding inflation and squeezing household budgets. President Donald Trump has added to these concerns, stating he does not expect oil prices to fall until the war ends, which he predicts will be after the November elections.

• A Strong Labor Market: The U.S. jobs market remains robust. This strength, while positive for workers, gives the Fed "cover" to raise interest rates. The logic is that the economy is strong enough to absorb higher borrowing costs without tipping into a severe recession.

• Hawkish New Leadership: The appointment of Kevin Warsh as the new Fed Chair is perhaps the most significant variable. While he has remained publicly non-committal on the immediate decision, Warsh has a long-established reputation as an inflation hawk. His repeated comments emphasizing the central bank's primary duty to slow price rises have led many to believe he is preparing the ground for a hike.

Wall Street weighs the odds

The debate among economists highlights the complexity of the Fed's decision.

• The Consensus View: Most major financial institutions are now forecasting an increase. Economists at Deutsche Bank recently wrote that a rate hike is "the most likely policy outcome," citing the public comments from Chair Warsh and other influential members of the Fed's policy-setting committee.

• The Dissenting Voice: Not all are convinced. Grace Zwemmer, a U.S. economist at Oxford Economics, is among those who expect the Fed to keep rates unchanged for now, arguing the central bank may want to see more data before acting.

• The Common Ground: While opinions on a hike differ, there is near-universal agreement on one point: a rate cut is completely off the table. The direction of the next move is now firmly considered to be either a hold or a hike.

The political dimension

Adding another layer of complexity is the immense political pressure being exerted on the central bank. President Trump, who is facing an election in November, has once again publicly called for the Fed to lower rates to stimulate the economy.

"The Fed Board, with its great new leader, must get smart - BE PATRIOTS for a change," the president posted on social media last week.

This creates a significant test for the new Fed Chair. Warsh must balance the Fed's economic mandate against overt political pressure from the White House, all while establishing his own credibility and the institution's independence.

The bottom line: What to watch

The summer holidays are over, and a period of heightened economic uncertainty has begun. The decisions made in the coming week will set the tone for the global economy into 2025.

• The Fed's Signal: Wednesday's decision is pivotal. A rate hike would confirm a global shift towards tighter policy, likely causing a significant reaction in stock, bond, and currency markets. A decision to hold would be seen as a temporary reprieve, but the bank's accompanying statement will be scrutinized for clues about future increases.

• Global Ripple Effects: A Fed hike would strengthen the U.S. dollar, putting pressure on other central banks, including the Bank of England, to consider their own rate paths to prevent their currencies from weakening and importing more inflation.

• Impact on Consumers: Regardless of the immediate outcome, the direction of travel is becoming clearer. Consumers and businesses should prepare for a world where borrowing becomes more expensive, ending a multi-year period of relative stability.