Morningstar DBRS: What Japan’s Break from Low Rates Could Mean
Key Takeaways
- The Bank of Japan’s interest rate normalization is the dominant driver of higher bond yields in the country.
- Fiscal costs have risen, but risks remain manageable.
- Maintaining favorable debt dynamics is Japan’s key challenge.
Japan’s 10-year government bond yield has risen from around 0.2% in early 2022 to 2.7% in July 2026, marking a clear break from decades of exceptionally low borrowing costs.
Higher yields are a fiscal headwind, given Japan’s public debt exceeds 200% of GDP. They largely reflect a change to inflation expectations, stronger wage growth, and the Bank of Japan’s exit from ultra-accommodative monetary policy.
From a ratings perspective, higher yields complicate Japan’s effort to reduce the debt ratio, although we consider the rise in Japanese bond yields a form of normalization and manageable for authorities within the context of Japan’s A high (Stable) rating. The impact on government finances will unfold gradually, supported by Japan’s long debt maturity profile, deep domestic capital markets, and stable investor base.
The key question is whether nominal growth can remain above the government’s effective borrowing cost. If so, debt dynamics should remain manageable despite higher yields.
Why Are Yields Rising?
Bank of Japan Policy Normalization
The primary driver of higher yields has been the BoJ’s normalization of monetary policy. After the BoJ ended Yield Curve Control and exited negative interest rates in March 2024, the central bank raised its policy rate from negative 0.1% in April 2024 to 1.0% in June 2026, as inflation remained around or above its 2.0% target.
While it left rates unchanged at 1% at its July 31 meeting, stronger wage settlements through annual Shunto negotiations, rising services inflation, and firmer inflation expectations continue to support expectations of a structurally higher interest-rate environment. Higher yields also reflect the BoJ’s gradual withdrawal from the Japanese Government Bond market. For more than a decade, large-scale BoJ purchases suppressed term premia and volatility, leaving the central bank holding roughly 52% of outstanding JGBs. As part of policy normalization, the BoJ is reducing monthly bond purchases from around JPY 5.7 trillion in mid-2024 to about JPY 2.0 trillion by 2027.
As private investors absorb a larger share of government issuance, upward pressure on long-term yields is likely to persist.
Consequently, yields are rising because both policy rates and bond-market pricing are normalizing. By normalization, we mean the gradual transition away from negative or near-zero interest rates, yield-curve control, and large BoJ interventions, towards a more market-based environment in which interest rates and government bond yields are determined more by underlying economic fundamentals, including inflation, growth, and fiscal conditions.
As a result, the increase in JGB yields reflects not only higher inflation expectations but also higher real yields.
External Factors, Including the Carry Trade, Also Contributed to the Rise in Japanese Yields
US monetary policy also contributed to higher Japanese yields. Between March 2022 and July 2023, the Federal Reserve raised the federal funds rate from near zero to 5.25%-5.50%, while the BoJ maintained negative interest rates and yield curve control. The widening interest rate differential put significant downward pressure on the yen, which depreciated from around JPY 110/USD in early 2022 to nearly JPY 160/USD in mid-2024.
The weaker yen increased import costs and initially contributed to higher imported inflation. Over time, however, price pressures became more broad-based, supported by stronger wage growth, rising services inflation, and firmer inflation expectations. As inflation proved more durable, markets increasingly priced in further BoJ policy normalization and a structurally higher interest rate environment, contributing to the rise in JGB yields.
Fiscal Concerns Are Playing a Larger Role
Fiscal concerns have also added to upward pressure on yields. Japan’s public debt remains the highest among advanced economies at more than 200% of GDP. Proposals for additional fiscal support and public investment, including Sanae Takaichi’s long-term economic strategy, have prompted discussions about whether fiscal consolidation will proceed more slowly than expected. However, because much of the proposed spending would be implemented gradually over a number of years, the direct impact on Japan’s near-term fiscal outlook appears limited.
While BoJ policy normalization, higher inflation expectations, and reduced central bank purchases remain the primary drivers of higher JGB yields, fiscal considerations may also be contributing at the margin. As the BoJ reduces its footprint in the JGB market and private investors absorb a larger share of government issuance, yields are increasingly reflecting underlying economic and fiscal fundamentals.
Higher real yields can reflect stronger growth prospects (credit positive), global interest-rate spillovers (credit neutral), or a rising fiscal risk premium (credit negative). For Japan, BoJ policy normalization and the return to more market-based pricing appear to be the dominant drivers, although investors may also be assigning somewhat greater weight to medium-term fiscal risks than during the period of Yield Curve Control and large-scale BoJ purchases.
While it is difficult to quantify the contribution of fiscal concerns to higher yields, the increase in the fiscal risk premium appears to be a secondary factor at this point. Importantly, Japan’s deep domestic investor base and long debt maturity profile continue to limit near-term refinancing risks.
Impact of Higher Yields on Government Finances; Banks and Households
Higher yields will gradually increase debt-servicing costs as debt is refinanced at higher rates. With public debt exceeding 200% of GDP, Japan is sensitive to borrowing costs over the long term. However, its average debt maturity of roughly eight years limits refinancing risk, slows the pass-through to government funding costs, and limits near-term refinancing risks.
Japan continues to benefit from a large domestic investor base and stable market access. The key credit question is therefore not whether Japan can refinance its debt, but whether higher borrowing costs are offset by stronger nominal GDP growth and revenue generation. While higher yields will gradually increase debt-servicing costs, stronger nominal GDP growth could help offset part of the impact. The greater risk would be a sustained increase in borrowing costs that is not matched by stronger growth, making debt stabilization more challenging over time.
Banks: Higher Rates Support Earnings but Increase Duration Risk
Japanese banks are among the main beneficiaries of higher interest rates. After years of compressed margins, rising rates have boosted net interest income and supported profitability. Recent results from the major banking groups indicate that higher domestic rates and loan growth are providing a meaningful tailwind to earnings. (See Japanese Mega Banks Record F2025 Earnings Reflect Tailwind from Rising Domestic Rates, July 21, 2026). That said, higher yields have generated mark-to-market losses on bond portfolios and increased duration risk for institutions with significant JGB holdings.
These pressures have been manageable thus far, but impacts vary across institutions, particularly among smaller regional banks. Overall, interest-rate normalization is positive for bank earnings, although it introduces risks that had been absent during the era of ultra-low interest rates.
Institutional Investors and Capital Flows
Higher domestic yields may also influence the behavior of Japanese institutional investors. For years, life insurers, pension funds, and other asset managers increased overseas investments in search of yield. As domestic yields become more attractive, some reallocation toward yen-denominated assets may occur.
Any sustained shift in portfolio preferences could reinforce demand for JGBs while also affecting global capital flows, given Japan’s significant role as an international investor.
Households: A Mixed Outcome
The impact on households remains mixed. Higher deposit rates provide a long-awaited return on savings and support income for savers and retirees. However, borrowing costs are rising, particularly for households with variable-rate mortgages. Looking ahead, the impact of higher borrowing costs for some households may be offset by the evolution of wage dynamics. If wage increases continue to outpace inflation and higher interest expenses, household balance sheets should remain resilient. If wage growth slows while funding costs continue to rise, household spending could face greater pressure.
Recent wage settlements suggest Japan may be moving toward a more durable wage-price cycle.
Japan’s Creditworthiness Remains Stable
The rise in Japan’s 10-year government bond yield from around 0.2% in early 2022 to 2.7% in July 2026 reflects economic and monetary policy normalization more than a deterioration in sovereign credit fundamentals. While higher rates will gradually increase debt-servicing costs, Japan continues to benefit from substantial credit strengths, including a deep domestic funding base, strong market access, and a long maturity profile. As a result, higher yields remain manageable within the context of Japan’s A high (Stable) rating.
Looking ahead, the key determinant of creditworthiness will be whether stronger nominal growth keeps pace with higher borrowing costs. Sustained growth above the government’s effective funding cost would help stabilize debt dynamics, while a prolonged rise in borrowing costs not matched by stronger growth would increase pressure on fiscal flexibility.
