Japan's benchmark 10-year government bond yield climbed to 2.880% on Thursday, reaching its highest level since September 1996 as oil prices surged following U.S. President Donald Trump's announcement that a tentative agreement with Iran had collapsed. The two-year JGB yield rose 1 basis point to 1.44% while the five-year yield advanced 1 basis point to 1.995%, according to Reuters. Bond yields move inversely to prices, meaning rising yields reflect selling pressure in the bond market. The spike in crude prices pushed U.S. Treasury yields to multi-week highs, adding upward pressure on global borrowing costs. Investor attention is also focused on Japan's scheduled auction of approximately 2.5 trillion yen ($15.38 billion) worth of five-year government bonds later on Thursday, with improving demand indicators potentially supporting the auction despite the higher yield environment.
Economy Minister Minoru Kiuchi has strongly defended the government's stance on Bank of Japan independence, dismissing suggestions that the administration was attempting to influence the central bank's interest rate decisions. Speaking on Tuesday, Kiuchi told reporters that "there is no change to the government's stance that specific monetary policy means fall under the jurisdiction of the BOJ." He described market interpretations that the government wanted to restrain future BOJ rate increases as a misunderstanding, aimed at calming investors who have questioned whether the government is prioritizing economic stimulus over inflation control and fiscal sustainability. The remarks came after benchmark Japanese government bond yields climbed to their highest levels in three decades, with the 10-year JGB yield rising to 2.865% on Wednesday, its highest level since the mid-1990s.
Japan's government is considering revising the language in its annual economic policy blueprint to underscore the Bank of Japan's independence in monetary policy, according to multiple reports. The proposed revision comes after the government released a draft version of its economic blueprint last month that called on the Bank of Japan to align its monetary policy with the government's efforts to support economic growth. In response to market concerns, the government has revised the language to emphasise the importance of the BOJ conducting appropriate monetary policy "to achieve stable inflation" as Japan seeks to strengthen its economy, according to the revised version obtained by Reuters on Tuesday. However, the revised draft retained a key passage urging the central bank to align its policy decisions with the government's economic agenda, as reported by Reuters. "Investors' distrust over Takaichi's policy stance and its communication with markets runs deep and can't be fixed with such minor tweak in wording," said Katsutoshi Inadome, a senior strategist at Sumitomo Mitsui Trust Asset Management, projecting the 10-year yield to hit 3% in coming months.
Prime Minister Sanae Takaichi's dovish stance and preference for aggressive fiscal and monetary support have unsettled investors and intensified scrutiny of her administration's influence over policy as borrowing costs climb. Since taking office in October, Takaichi has vowed to boost investment and focus on spending to revitalise the economy. Her administration has also signalled reservations over the Bank of Japan's interest rate hikes, with the government's draft blueprint stating it was "very important for monetary policy to be guided appropriately to achieve a stronger economy." Some analysts said the wording sparked a selloff in Japanese government bonds, fuelling concerns that the government could pressure the BOJ to keep interest rates low and risk falling behind the curve as inflationary pressures build. The benchmark 10-year yield hit a 30-year high of 2.865% on Wednesday, despite the government's attempts to address market concerns about BOJ independence.
One of the most closely watched changes in the draft blueprint involves Japan's fiscal targets, with the government proposing to treat the primary budget surplus as a medium-term indicator assessed over several years rather than maintaining annual goals. This represents a significant shift from the long-standing measure of fiscal discipline that excludes debt servicing costs. Instead, policymakers intend to place greater emphasis on reducing Japan's debt-to-GDP ratio, arguing that the measure provides a more comprehensive assessment of fiscal sustainability because it accounts for economic growth alongside government borrowing. Investors also sold bonds on signs of Japan's receding commitment to fiscal discipline, with the draft blueprint removing language on the need for "fiscal health." As Nobuyasu Atago, chief economist at Rakuten Securities Economic Research Institute, noted: "The recent fast-pace rise in 10-year yields reflect Japan's wavering stance on fiscal discipline. Seeking the BOJ's help to curb yield rises would backfire."
