Global financial markets are bracing for a fresh test of the cost of money as the US Federal Reserve and Bank of England confront renewed inflation pressure, with government bond yields already rising sharply before the two central banks deliver policy decisions within 24 hours of each other.
The Fed is due to announce its decision on Wednesday, while the Bank of England’s Monetary Policy Committee meets on Thursday after UK inflation unexpectedly moved back above 3 percent.
The developments have put investors in an increasingly difficult position: markets are preparing for policy to remain tight even as higher borrowing costs begin to weigh on mortgages, corporate financing, government debt and investment decisions.
Nigel Green, CEO of global financial advisory group deVere, warned that either central bank could unsettle markets, arguing that investors should prepare for continued volatility rather than assume a policy announcement will bring relief.
In the US, the 10-year Treasury yield has moved above 5 percent, its highest level since 2007, while the 30-year fixed mortgage rate has crossed 7 percent, according to the figures cited by deVere.
It is currently hovering around 4.97 percent. The 2-year Treasury sits near 4.13 percent to 4.63 percent, while the 30-year Treasury yield recently touched 5.19 percent before easing toward 4.90 percent following a weaker-than-expected jobs report.
US mortgage rates which crossed back over the 7.00 percent threshold for a 30-year fixed loan, also saw the Mortgage Bankers Association reporting average contract rates climbing to 6.97 percent, the highest in over a year, continuing to stifle a sluggish housing market.
The annual US Consumer Price Index (CPI) has spiked back up to 3.8 percent, fuelled largely by energy disruptions, while wholesale producer prices are tracking even higher at an annual clip of six percent.
For the market-implied possibilities, the money markets are widely expecting the Federal Reserve to hike interest rates today (at the conclusion of its September 15–16 meeting), breaking its pause to combat re-accelerating energy inflation. This represents a sharp reversal from early-month bets of rate cuts, though soft labor data (7.18 million July job openings) has traders holding onto hope for long-term easing by late 2027.
But Green argues that a Federal Reserve decision to hold rates could itself trigger market turbulence because expectations for policy action are already elevated.
“There’s a real chance markets move more if the Fed holds than if it hikes,” Green said, arguing that a decision seen as hesitation could prompt investors to reassess the path of inflation and future interest rates.
The immediate US backdrop has become more challenging, with higher oil prices adding to inflation concerns and markets positioning for further tightening.
But the significance of the Fed decision extends beyond US borrowers.
US Treasury yields form a critical reference point for global borrowing costs and asset valuations. A sustained increase can raise the return investors demand from government and corporate debt elsewhere, increase financing costs for companies and place pressure on currencies and capital flows in emerging markets.
The UK is confronting a similar problem from a different starting point.
British inflation rose to 3.1 percent in August, according to official data, moving further above the Bank of England’s two percent target. Motor fuel costs rose 23 percent year on year, while electricity, gas and other household fuel costs increased six percent.
The data arrive one day before the BoE’s rate decision, with markets assigning a probability above 80 percent to the Bank keeping its key rate at 3.75 percent, according to deVere.
Other data show average UK mortgage rates have risen month-on-month for the first time in eight months. The average two-year fixed mortgage has climbed to 5.59 percent–5.65 percent, while five-year fixed rates sit between 5.64 percent–5.70 percent. Sub-4 percent deals are completely gone, forcing lenders like Santander to actively reprice higher.
Ahead of tomorrow’s (September 17) Bank of England meeting, markets price a strong probability that the BoE will leave the Bank Rate steady at 3.75 percent while slowing its Quantitative Tightening (QT) bond-selling pace to £50–£70 billion a year to avoid further fracturing the bond market. Over the next 12 months, however, swap markets are pricing in around three interest rate hikes to tame sticky structural inflation
Green said a hold could carry risks if investors interpret it as evidence that policymakers are falling behind renewed price pressures.
“A hold on Thursday should not be read as good news,” he said, pointing to elevated energy costs and gilt yields.
The bond market is already reflecting significant pressure. Britain’s 30-year gilt yield reached a 28-year high before easing to 5.907 percent after the inflation data, while the 10-year yield stood at 5.365 percent, according to figures cited by deVere.
Data show the UK carries the highest borrowing costs in the G10. The 10-year gilt yield surged to a 19-year high near 5.34 percent to 5.40 percent. Even more severe, long-dated borrowing costs—the 30-year gilt yield—skyrocketed to 5.77 percent–5.94 percent, the highest since 1998, as markets price in extreme fiscal stress and massive government debt burdens.
For governments, the implications are substantial. Higher long-term yields increase the cost of refinancing public debt, potentially limiting fiscal room at a time when governments are simultaneously trying to support households and businesses.
For companies, the transmission is equally direct. Businesses refinancing loans or issuing new debt face higher funding costs, potentially affecting capital expenditure, hiring, dividends and expansion plans.
Households face the same repricing through mortgages and other forms of credit.
Green said companies rolling over debt in coming quarters could face financing costs significantly different from those assumed when their budgets were prepared.
The broader concern is that inflation shocks are increasingly colliding with already elevated long-term borrowing costs.
Oil and energy prices are particularly important because they can push headline inflation higher while simultaneously increasing operating costs for businesses and reducing household purchasing power. Central banks must therefore balance the risk of allowing inflation expectations to become entrenched against the danger of tightening financial conditions too aggressively.
For global investors, the next 48 hours are therefore about more than whether the Fed or BoE moves rates.
They are about what policymakers signal regarding the future path of money, and whether bond markets believe central banks remain ahead of inflation.
A sharper repricing of rate expectations could ripple through equities, currencies, sovereign debt and emerging-market assets, while higher global yields could make it more expensive for developing economies and companies to attract international capital.
Green’s warning is consequently less about one meeting than the possibility that investors are entering a prolonged period of elevated borrowing costs.“Today’s move doesn’t settle anything,” he said of the Fed decision. “Investors waiting for relief once the Fed acts are going to be disappointed.”
The message for markets is clear: whichever direction the two central banks take, investors will be watching the accompanying signals on inflation, energy prices and the trajectory of rates — because the bigger market story may be not today’s decision, but how long the era of expensive money is set to continue.
