The yield on the 10-year US Treasury note has risen to its highest level since 2007, as financial markets increasingly bet that the Federal Reserve will raise interest rates again. The benchmark yield, which underpins borrowing costs across the global economy, has climbed steadily as investors reassess how long the US central bank will keep policy tight.
The move matters well beyond Washington. Yields on US government debt set the tone for bond markets worldwide, and the latest leg higher has already pushed up borrowing costs in Britain and Europe. For UK households, that means upward pressure on mortgage rates and the cost of corporate credit. For the government, it makes refinancing the national debt more expensive at a time when the public finances are already stretched.
The immediate trigger is the market's conviction that the Fed is not finished tightening. Stronger-than-expected economic data and persistent inflation have led traders to price in another increase in the federal funds rate, rather than the cuts that many had expected earlier in the year. When investors expect higher official rates, they demand a higher yield to hold longer-dated government bonds, pushing prices down and yields up.
That repricing has been felt across the curve. Short-dated yields, which are most sensitive to Fed policy, have moved sharply, while the 10-year yield has broken through levels last seen in the run-up to the global financial crisis. The rise has been unusually rapid, reflecting how quickly expectations have shifted.
For Britain, the transmission is direct. Gilt yields tend to follow US Treasuries, and lenders price fixed-rate mortgages off swap rates that are themselves influenced by global bond markets. A sustained rise in yields therefore feeds through to the rates offered to homeowners and businesses, squeezing disposable incomes and investment plans.
The Bank of England faces a delicate balancing act. It must weigh the risk of persistent inflation against an economy that is already showing signs of strain. Higher global borrowing costs do some of the tightening for it, but they also raise the risk of a sharper slowdown. Policymakers have repeatedly stressed that decisions will be driven by domestic data, yet the global backdrop is impossible to ignore.
There are also implications for sterling and for the UK's position as a destination for international capital. Higher US yields tend to attract money into dollar assets, which can weaken the pound and add to imported inflation. That in turn complicates the inflation picture the Bank of England is trying to manage.
Investors are watching the next round of US inflation and employment figures closely, since these will determine whether the Fed follows through on the additional hike now priced in. Any sign that price pressures are easing could quickly reverse the move in yields, but a further upside surprise would reinforce the upward trend.
For now, the message from markets is clear: the era of cheap money is not returning soon. Governments, companies and households across Britain should prepare for a world in which borrowing costs remain elevated for longer than many had hoped.