METI Proposes Structural Overhaul to Revive Japan’s Underdeveloped Corporate Bond Market
Japan’s financial landscape remains stubbornly dominated by indirect lending, a structural byproduct of chronic overbanking and historically low corporate demand for capital. However, a recent report by the NLI Research Institute argues that rising interest rates and the critical need to fund venture-backed growth demand a diversification of Japan’s financial channels.
For domestic bond investors traditionally anchored to Japanese Government Bond (JGB) yields, corporate and general bonds present a compelling avenue for generating excess returns (alpha). Unlike riskier strategies that bet on yield curve distortions or interest rate directions, holding corporate bonds to maturity guarantees alpha—provided the issuer defaults do not occur—a risk that can be mitigated through diversification. While pension funds frequently worry about mark-to-market valuation losses amidst rising interest rates, the report notes that such paper losses can be recovered as future revenue in subsequent periods, provided the assets are held long-term.
Despite these benefits, Japan's corporate bond market remains remarkably small. In the flagship NOMURA-BPI Overall Index, government bonds command over an 80% share. As of December 2025, only 27% (454 companies) of TOPIX-listed corporations had outstanding corporate bonds. This stagnation stems from a deep-seated institutional bias: both lenders and borrowers heavily favor bank loans. Furthermore, standard Japanese corporate bonds are structurally disadvantaged; bank loans are often secured with collateral, while corporate bonds are left unsecured, creating a vast disparity in recovery rates during defaults.
To counter this stagnation, the Ministry of Economy, Trade and Industry (METI) convened the "Study Group on the Future of the Corporate Bond Market for Advanced Corporate Finance" for a six-month period beginning in late October 2025. The initiative aimed to expand the supply and diversity of risk money required for aggressive growth investments, aligning with the national agenda to establish Japan as a leading asset management center.
Following its final session on March 30, the study group finalized its draft and officially published its interim report. The document outlines actionable measures to address systemic issues:
- Expanding Issuer Base: Publishing a "Corporate Bond Issuance Guidebook" and compiling success stories of corporate bond utilization.
- Enhancing Investment & Operations: Recommending a review of investment guidelines to move beyond simple credit ratings to substantive investment assessments, improving price information infrastructure, rationally reviewing exemptions for appointing corporate bond managers, promoting appropriate covenants, and building environments for swift bondholder consensus.
- Operational Efficiency: Tasking the Japan Securities Dealers Association (JSDA) with reviewing marketing windows and processes to streamline issuance.
While the JSDA has previously attempted to revive the market, past progress has stalled due to entanglements between securities firms' vested interests and investor protection regulations—all within a credit structure where bank loans hold an overwhelmingly dominant position relative to other advanced economies.
Nevertheless, changing macro conditions—namely surging interest rates and an increasing appetite for investment among households—have given this push new momentum. Labeled intentionally as an "interim" report, the document underscores that transforming Japan's financial structure is an ongoing challenge requiring continuous, long-term policy adjustments.
Norbert Gehrke
