The Office for Budget Responsibility (OBR), an independent public finances watchdog, has revised its forecasts, now predicting that the Bank of England’s central interest rates will stabilize at around 4% by 2028-29. This is an increase from the previous expectation of a fall to 3% by the end of the forecast period.

Current Bank Rate Trends

The Bank Rate, which significantly influences mortgage rates, is currently at 5.25%. It is anticipated to peak slightly above this by the end of the year.

Inflation and Its Impact on Mortgage Rates

Persistent High Inflation

A key factor driving this forecast is the higher-than-expected inflation, which is now expected to return to the Bank of England’s target of 2% only by the second quarter of 2025. This is over a year later than previous predictions.

Contributing Factors to Inflation

Initially, the spike in inflation was attributed mainly to global energy price surges. However, average pay growth, now at 8.5%, is also contributing to sustained inflation.

The Ripple Effect on Mortgages

Fixed-Rate Mortgages and Renewals

Approximately half of the impact of rising interest rates has yet to be fully felt in the economy, largely because many households are on fixed-rate mortgages that have not yet come up for renewal.

Expected Mortgage Rate Increases

On average, mortgage rates are projected to rise from 2% in 2021 to a peak of 5% in 2027, which is 0.8 percentage points higher than the March forecast.

Long-Term Rate Comparisons

In four years, rates are expected to be 2.2 percentage points above the average of the past decade, indicating a significant shift from previous trends.

Revised Mortgage Forecast

The OBR has increased its mortgage rate forecast to 4.9% by January 2028, from the earlier prediction of 4.1%.

Impact on Homeowners

For a homeowner with a typical £200,000 mortgage, this increase could mean an additional £1,092 annually, or £91 per month.

Expert Insights on Inflation and Interest Rates

Max Mosley, a senior economist, explains that inflation is experiencing “second-round effects,” where businesses pass on previous shocks’ costs. This creates a cycle where rising prices lead to higher wage demands, which in turn can fuel further inflation.

Long-Term Interest Rate Outlook

Mosley does not foresee a return to the low-interest rates of the past decade. He attributes the past low rates to austerity measures and a “very cold fiscal policy,” indicating that the economic landscape has since shifted.

Adjustment to New Mortgage Rate Norms

David Hollingworth from L&C, a mortgage broker, notes that many borrowers who enjoyed low rates are now facing a substantial payment shock. He emphasizes the need for borrowers to adjust to this new situation, as rates are unlikely to return to the ultra-low levels seen post-financial crisis.