European government bond yields climbed to multi-year highs as rising oil prices and continued uncertainty around the Iran conflict revived concerns over inflation and the possibility of tighter monetary policy.
Bond markets came under renewed selling pressure, pushing borrowing costs higher across several major economies.
France’s 10-year government bond yield rose to around 4.10%, its highest level since 2009, while Germany’s benchmark 10-year Bund yield moved above 3.25%, reaching its strongest level since 2011.
Longer-dated bonds also faced pressure. Germany’s 30-year yield climbed to around 3.78%, while France’s 30-year borrowing costs reached their highest level since 2008.
Oil Prices Add to Inflation Concerns
The latest bond-market moves followed a rise in energy prices as hopes of a quick resolution to tensions involving Iran weakened.
Brent crude traded close to $91 a barrel, raising concerns that elevated energy costs could keep inflation above central-bank targets for longer.
Higher oil prices can quickly affect transport, manufacturing and household energy costs, making it more difficult for central banks to ease monetary policy.
Investors are therefore reassessing expectations for the European Central Bank, with markets increasingly pricing in the possibility of another interest-rate increase if inflation pressures remain persistent.
Borrowing Costs Rise Across Major Economies
The sell-off has not been limited to the eurozone.
In the United States, the 30-year Treasury yield climbed to around 5.33%, its highest level since 2007. In the UK, the 30-year gilt yield rose to approximately 5.85%.
Higher long-term yields also reflect growing concerns about government borrowing and the large amount of debt expected to be issued or refinanced across major economies.
Countries with significant refinancing requirements could face higher interest expenses if elevated yields persist.
Italy, for example, is expected to refinance debt equivalent to about 17% of GDP in 2026, compared with roughly 12% for France and 7% for Germany and the UK.
Bond Markets Remain Sensitive
The combination of geopolitical uncertainty, higher energy prices, inflation risks and government debt issuance is likely to keep bond markets volatile.
Further escalation in the Middle East could push energy prices higher and strengthen expectations that central banks may need to keep interest rates elevated for longer.
However, higher yields may also make government bonds more attractive to investors seeking income, particularly when returns remain above prevailing inflation levels.
For now, investors are expected to closely track oil prices, inflation data and developments surrounding the Iran conflict for clues about the next direction in global bond markets.
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