Long-dated bonds have become the epicenter of investor anxiety, with concerns ranging from persistent inflation to debt-fueled artificial intelligence investments driving up government borrowing costs worldwide. Sovereign borrowing costs are climbing across the globe, with the 30-year US Treasury yield reaching its highest level since 2007 this week, while France's 30-year yield hit a record not seen since 2008 and German bonds touched levels last observed in 2011. UK gilt yields are approaching 6%, and comparable Japanese debt is also near historic peaks. While domestic factors play a role in each market, the structural forces pushing yields higher are distinctly global in nature.
One key concern is that an increasingly fragmented world order will leave economies more vulnerable to supply shocks and sustained inflationary pressures. Bondholders also worry that governments are losing control over spending, which undermines fiscal health. Meanwhile, shifts in market structure and demographics have weakened the demand that once came from steadfast buyers. As St. James's Place Chief Investment Officer Justin Onuekwusi put it: "The market is telling us that we expect higher inflation in the future, or at least more uncertainty, so holding longer-dated bonds requires higher yields."
Government borrowing costs are rising across all maturities, but long-dated bonds are bearing the brunt because they are more sensitive to risks like inflation. These concerns have become so acute that some nations are reducing their issuance of long-term debt in favor of shorter maturities. In the UK, authorities have already halted most of their long-dated issuance program. Yet governments have limited room to maneuver, as they must adapt to a new reality where the era of locking in low borrowing costs for decades is over.
Strategist Insights
There are many reasons why yields are structurally higher this decade, and one significant shift is how fiscal deficits are being financed. Typically, deficits widen when the economy weakens and policy rates fall, providing a buffer for bond markets. But today's fiscal expansion is pro-cyclical: governments are borrowing more at a time when rates are already elevated, pushing yields even higher, notes macro strategist Skylar Montgomery Koning.
Chris Iggo, Chief Investment Officer at AXA IM Core, part of BNP Paribas Asset Management, commented: "It's hard to say what yield level would improve the total return outlook for long-dated fixed income. The only thing that could change that is a sudden weakening in economic data or some external shock, and the latter seems more likely than the former."
Since the end of June, the 30-year US Treasury yield has climbed nearly 40 basis points, briefly touching 5.33% on Tuesday—the highest since mid-2007—before giving back some gains. This puts pressure on US President Donald Trump and Treasury Secretary Bessent. With midterm elections approaching, high government financing costs are feeding through to corporate and consumer borrowing. Iggo added: "The November election could bring more policy risk, and with the usual budget season ahead, market attention will certainly focus on fiscal issues. Ideally, even if mortgage rates remain below 2023 levels, no one wants to see them rise during a critical election period."
The US Treasury market is only part of the story. The average yield on a benchmark portfolio of investment-grade government bonds has risen to nearly 4.5%. Global bond markets have been battered this year, with Middle East conflicts pushing energy prices higher and reinforcing bets that the Federal Reserve and other central banks may tighten policy further. Rising rates will exacerbate already severe fiscal pressures across major economies. In the US, public debt interest payments remain a major driver of the widening budget deficit, reaching $1.17 trillion this fiscal year—up 15% year-over-year—partly due to higher Treasury yields.
However, the challenges facing fixed-income investors predate recent moves, and the latest trends show other forces are also lifting long-term yields. One pressure point is competition from corporate bond issuance. Record-breaking issuance has added significant duration supply to the US fixed-income market, particularly as tech companies increasingly turn to longer-dated bonds to finance AI investments. These US firms are also tapping overseas bond markets more frequently. Alphabet is a case in point, having decided to issue its first-ever Australian dollar bond, worth A$5 billion (approximately US$3.6 billion).
As bond supply increases, the buyer base is evolving. Traditionally, many bond markets were supported by long-term investors like pension funds, which needed long-duration assets to match long-dated liabilities. But today, many pension funds are scaling back defined-benefit plans, and regulatory rules are encouraging funds to increase equity allocations. More broadly, as government bond issuance expands, nations are relying more heavily on private investors. The Fed's June meeting minutes showed officials heard a report on how US Treasury holdings are shifting from "official sector holders who are relatively price-insensitive" to "private investors who are more price-sensitive"—a change that could impact term premiums.
Anshul Pradhan, Head of US Rates Strategy at Barclays, noted that official sector demand is driven by policy goals, while private investors are more return-sensitive. He said this shift in the buyer base over the past decade explains roughly 90 basis points of the 30-year Treasury term premium. Despite the US annual fiscal deficit nearing $2 trillion and total debt approaching $40 trillion, strategists at Yardeni Research, led by Ed Yardeni, said Tuesday there is no reason to panic about the US bond market just yet. "We haven't pressed the panic button, but we're closely watching whether bond vigilantes will," they stated.
In Europe, worries over high government borrowing and sustained inflation pressures have also pushed long-term financing costs to multi-year highs. France's 30-year yield reached its highest since 2008, with investors eyeing the 2027 budget negotiations and next year's presidential election. Meanwhile, Germany's financing needs are rising, and when it issued a 30-year syndicated bond on Tuesday, borrowing costs may have reached their highest in 15 years. In the UK, the gilt market took a hit after the new prime minister signaled a desire for greater fiscal flexibility in late July. Japan's bond yields, while still lower in absolute terms than their US and European counterparts, have also been on a sustained upward trajectory.
Despite the bond selloff driven by price pressure concerns, long-term breakeven inflation rates—a measure of market expectations for future inflation—remain relatively stable across most major markets. This suggests that rising borrowing costs are being driven more by so-called real yields, or the additional compensation investors demand beyond inflation protection to hold bonds. Morgan Asset Management portfolio manager Kelsey Berro noted that this repricing could offer a more attractive entry point for new capital.
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