Global Bond Selloff Intensifies as Oil and Inflation Hit Rate Expectations

A coordinated selloff swept government bond markets from Tokyo to New York this week, sending long-dated yields to multi-year highs as rising crude prices and hot inflation data forced traders to price in central bank tightening. The rout accelerated Friday, with US 10-year yields rising more than 11 basis points to peak just shy of 4.60%, capping the biggest weekly jump since April 2025. Japan's 30-year yield hit 4% for the first time since the bonds were issued in 1999. In the UK, 30-year gilt yields reached a 28-year high, compounded by a brewing political crisis that threatens Prime Minister Keir Starmer's leadership.

The trigger is a two-front shock. Crude oil prices climbed as the US and Iran show no sign of ending a conflict that has cut off key shipments through the Strait of Hormuz. That supply disruption arrived alongside back-to-back US reports showing a sharp rise in consumer and wholesale prices, fueling speculation that the Federal Reserve and other central banks will need to shift from cutting to tightening.

Oil at the Center: Why Crude Disruption Is Forcing a Rates Rethink

Strait of Hormuz and the Supply Shock

Roughly 20% of global oil transit passes through the Strait of Hormuz. Hostilities between the US and Iran have reduced tanker traffic, pushing crude prices higher. Energy costs feed directly into inflation expectations through production, transport, and consumer goods chains. The bond market's reaction is a bet that central banks will respond by raising rates, not cutting them.

Inflation Data Adds Confirmation

Two US reports this week reinforced the oil-driven inflation narrative. Producer costs accelerated at the fastest pace since 2022, and consumer prices also rose sharply. Fed Governor Michael Barr said Thursday that inflation is the overwhelming risk facing the economy. The combination of supply-side oil shock and demand-side price pressure leaves the Fed with little room to ease.

US 10-Year Yields at 4.60%: December Hike Probability Nears Two-Thirds

Trader Pricing and the Fed's Next Move

Swaps markets now price in an almost two-thirds probability that the Fed will hike interest rates in December, even with incoming Chair Kevin Warsh, whom President Trump picked to replace Jerome Powell. That is a dramatic reversal from earlier this year when the market expected cuts. The shift reflects both the inflation data and the oil price trajectory.

Fed Governor Barr's Inflation Warning

Barr's comments on Thursday crystallised the hawkish turn. He described inflation as the overwhelming risk, effectively ruling out any near-term rate cuts. The market is now pricing at least one hike by year-end, with some strategists calling for two.

Japan's 30-Year Yield Hits 4%: A Historic Shift for Bond Markets

Fiscal Policy Concerns and Extra Budget Talk

Japan's bond market has been a global outlier for decades, with yields near zero. The jump in the 30-year JGB yield to 4% marks a structural break. A report in Kyodo News said the government is weighing an extra budget to fund relief measures for the economy, raising concerns about fiscal discipline. Finance Minister Satsuki Katayama later said the situation has not yet reached the point where that is needed. The market is already pricing in higher supply risk.

Yield Curve Moves Across Maturities

UK Gilt Selloff: Political Crisis Amplifies Rate Hike Bets

Manchester Mayor Burnham's Leadership Challenge

The UK added a domestic political layer to the global rout. Signs that Manchester Mayor Andy Burnham may have a path to challenge Starmer's leadership raised the risk of a shift away from the government's spending restraint. That pushed 10-year gilt yields as high as 5.17%, the highest since 2008. Benchmark UK yields have risen by almost a percentage point since the US and Israel's attacks on Iran.

BOE Swaps Flip to Hikes

Traders have flipped from expecting the Bank of England to cut rates to bracing for hikes. Swaps markets now price in at least two such increases by year-end. The combination of oil-driven inflation, sticky domestic price pressures, and political uncertainty has made UK gilts the most vulnerable in the developed world.

The Two-Hike Threshold: When the Bond Market Might Stabilise

G-7 Meeting in Paris as a Potential Catalyst

Katayama said she and her Group-of-Seven peers would discuss the selloff when they meet at the start of next week in Paris. Any coordinated statement or policy response could calm markets temporarily. The mechanism that would actually break the selloff is a drop in oil prices or a clear signal from the Fed that it will not hike. Neither looks imminent.

Risks That Could Worsen the Rout

Further oil supply disruption: Any escalation in the Strait of Hormuz conflict could push crude above $100, forcing central banks to act more aggressively.

More hot inflation data: The next US CPI print in two weeks will be the key test. Another upside surprise would cement the December hike.

Political instability in the UK: A leadership challenge that succeeds could lead to fiscal expansion, adding to gilt supply and pushing yields higher.

Japan fiscal slippage: If the government passes an extra budget without offsetting revenue measures, JGB yields could rise further.

Key yield levels to watch:

Market	Yield Level	Context
US 10-year	4.60%	Just shy of peak; next resistance at 4.75%
Japan 30-year	4.00%	First time since 1999; psychological level
UK 10-year	5.17%	Highest since 2008; 5.25% is next
UK 30-year	28-year high	Political risk premium added

The selloff is not just a rates story. Rising bond yields lift borrowing costs for governments, businesses, and consumers, dragging on global growth. US stocks dropped Friday, pulling back from a sharp rally since late March. As Edward Harrison, Markets Live strategist at Bloomberg, put it: "Any further rise at the long-end of the bond curve threatens to worsen valuation jitters and unsettle a rally increasingly driven by long-duration equities."

For traders, the next concrete markers are the G-7 meeting in Paris, the next US CPI release, and any diplomatic breakthrough on the Strait of Hormuz. Until one of those shifts, the bond rout has room to run.

For more on the commodity driver behind this move, see our commodities analysis and the crude oil profile.