Even though the Bank of England (BoE) has kept its base rate firmly paused, many prospective buyers and homeowners looking to remortgage are facing a harsh reality: mortgage rates are still climbing. For the average borrower, this disconnect can be incredibly frustrating and confusing. If the central bank isn't hiking borrowing costs, why are high street lenders tightening the screws?
The answer lies in the complex machinery of global financial markets, specifically in a metric known as "swap rates."
When banks and building societies lend money for fixed-rate mortgages, they don't just rely on the BoE's current base rate. Instead, they purchase money from wholesale financial markets. To protect themselves against future interest rate fluctuations, lenders use interest rate swaps. Swap rates represent the market's collective forecast of where interest rates will be over the next two to five years.
If global investors believe that inflation is going to remain stubbornly high, or that the Bank of England will be forced to keep rates elevated for longer than previously anticipated, the cost of these swaps rises.
"Lenders price their fixed-rate mortgages based on the projected cost of future money, not just today's base rate. When wholesale market expectations shift, retail mortgage pricing moves with it instantly."
Recently, sticky domestic inflation data, international economic uncertainty, and robust wage growth have spooked the bond markets. Investors are demanding higher yields to lend money. Consequently, lenders immediately pass these increased wholesale costs onto consumers by pulling cheaper mortgage deals and replacing them with more expensive alternatives.
Ultimately, while the Bank of England controls the immediate base rate, the wider financial market is currently betting on a "higher for longer" economic environment. Until wholesale money markets calm down and long-term inflation shows definitive signs of cooling, borrowers should brace for elevated mortgage pricing—regardless of what the central bank decides to do today.