Japan’s benchmark 10-year government bond yield added 1.5 basis points to 2.935% as of 0415 GMT, after earlier touching 2.945%, reaching its highest level since 1996 amid escalating inflation worries and rising global interest rates. The sharp rise reflects growing market expectations for a near-term interest-rate increase by the Bank of Japan.
Financial markets across major economies are experiencing a heavy fixed-income sell-off, pushing borrowing costs to multi-year highs. Driven by persistent inflation concerns, government budget deficits, and increased debt supply, sovereign bond yields climbed worldwide as investors demanded greater compensation for holding long-dated government debt, according to market coverage detailing the global bond sell-off.
Tokyo Bond Yields Hit Three-Decade Highs on Monetary Policy Speculation
The yield on Japan’s benchmark 10-year government bond climbed during Tuesday trading, touching a three-decade peak not seen since September 1996. The 10-year JGB yield added 1.5 basis points to 2.935% as of 0415 GMT, after earlier touching 2.945%. Japan’s benchmark long-term interest rate briefly climbed to 2.95% on August 31, its highest level in about 30 years, as investors sold government bonds on expectations of further Bank of Japan rate increases, rising U.S. yields and concerns over the outlook for government spending. Bond prices and yields move in opposite directions, meaning yields rise when government bonds are sold and their prices fall.
While the yield retreated from the day’s high following a solid auction of 5-year JGBs, which saw the highest level of demand since June 2025 as the higher yield on offer attracted buyers, longer-term tenors faced sustained upward pressure. Following the auction result, the 5-year yield reversed an early rise to decline 1 bp to 2.15%, though it had started the day by rising 2 bps to a record 2.18%. Other cash bond tenors had not traded since the auction result. The 20-year and 30-year JGB yields had risen 2.5 bps to 2.935% and 4 bps to 4.115%, respectively, in the Tokyo morning. Longer-dated bond yields tend to be more responsive to inflationary concerns.
Shorter tenors sensitive to monetary policy expectations also pushed upward. The 2-year JGB yield, which is most sensitive to monetary policy expectations, had risen 1 bp to 1.7%, the highest since May 1995. Comments from BOJ officials have turned increasingly hawkish in recent days, and Reuters and other media reported that the policy board may pursue more aggressive tightening than it has to this point. DBS analysts raised forecasts for the 10-year JGB yield to reach 2.85% by year-end, and now expect the BOJ to raise the key rate in September while accelerating the pace of tightening to one quarter-point move every three to four months, from about twice a year currently. The government also appears less opposed to an early hike, further increasing the likelihood of a September move,
they said in a note. Markets interpreted U.S. Federal Reserve Chair Kevin Warsh’s Jackson Hole remarks on Aug. 28 as leaving the door open for further interest rate hikes. Yields on the benchmark Japanese government bond touched a 30-year high Monday, as the yen showed renewed signs of weakness following hawkish signals from the Fed.
Global Inflation Pressures and Heavy Sovereign Borrowing
External factors have amplified domestic bond market stress. The sell-off in global bond markets continued early Tuesday, pushing many benchmark borrowing costs to multi-year highs amid concerns about inflation, government budget deficits and increased supply of debt. The U.S.-Iran war has pushed up oil prices and is stoking inflationary pressures, which eat into the returns bonds offer.
Higher oil prices feed into headline consumer price inflation through gasoline and energy costs, but the bigger issue is second-round risk. If firms are already facing rising input costs, depleted inventories and resilient demand, a renewed energy shock makes it easier for price pressures to broaden, Patrick Munnelly
U.S. annual consumer price inflation is 3.4%, above the Federal Reserve’s 2% target. However, some investors sense a reluctance by new Fed Chair Kevin Warsh to increase official interest rates in order to tackle the price pressures, a belief that is also encouraging traders to sell longer duration paper. Beyond energy shocks, analysts emphasize that rising yields stem from structural fiscal strains rather than interest rate expectations alone. Developed nations face heavy budget deficits that require servicing through expanded debt issuance.
Rising long-dated bond yields are not driven solely by expectations of higher interest rates and inflation fears. They can also reflect concerns around high levels of government borrowing and investors demanding greater compensation for the risks of holding long-dated government bonds, Dan Coatsworth
These supply concerns extend across global markets. The U.S. 30-year Treasury, known as the long bond, which is particularly sensitive to rising inflation, is up nearly 2 basis points to 5.234%, its highest level since June 2007. The U.S. 10-year Treasury yield was up 1.4 basis points to 4.740%, near its highest level since the start of 2025. Similarly, the 10-year Japanese government bond yield rose above 2.950% for the first time since September 1996, while the similar duration German bund yield traded at 3.270%, near its highest mark since early 2011. The U.S. Treasury Department reported on Monday that nearly all major foreign holders of U.S. debt reduced their holdings in June. Compounding the supply pressure, major tech companies have pursued mammoth debt sales in recent months as they raise funds to pay for their large investments in AI. Goldman Sachs recently said it expects bond issuance by the five hyperscalers (Amazon, Alphabet, Meta, Microsoft, and Oracle) to reach roughly $250 billion this year and $400 billion in 2027. A lot of this debt is in longer duration assets that may compete with government paper of a similar tenor, say analysts.
For Treasury, the sheer amount of duration supply forced onto the market, notably at the long-end, should be a concern,
said Jonathan Cohn, head of U.S. rates desk strategy at Nomura in reference to hyperscaler bond sales.
Fiscal Deadlines and Upcoming Policy Decisions
Domestic fiscal developments in Japan continue to weigh heavily on market confidence. August 31 is the deadline for ministries and agencies to submit their budget requests for the next fiscal year to the Finance Ministry, with the total expected to reach a record high. If markets become less confident that Japan can maintain fiscal discipline, selling of government bonds could intensify further, putting additional upward pressure on long-term interest rates.
With Japan’s long-term interest rate briefly hitting 2.95%, the combination of domestic budget pressures and hawkish signals from central bankers points toward pivotal rate decisions ahead. Ed Yardeni, founder of Yardeni Research, summarized the market’s concerns in commentary shared with MarketWatch, noting that the U.S. now pays $1 trillion a year in interest on its $40 trillion federal debt while the Fed waits to see if inflation will continue to fall on its own, the Bank of Japan is on the verge of more rate hiking, and the outlook for oil prices remains uncertain, which has global bond investors pushing bond yields higher. However, he added that we are not pushing the panic button
as he recalled that during the summer of 2023, the U.S. bond yield soared from 4.00% to 5.00% in three months from August through September, concluding that at 5.00% on November 1, the bonds turned out to be a great buy. There could be a similar buying opportunity ahead.
