Japanese Megabanks See Deposit Growth Lag Loans, Widening Funding Gap Threatens Lending

Why It Matters

The widening deposit‑loan gap at Japan’s megabanks threatens the stability of the country’s credit supply chain. Retail deposits have traditionally underpinned loan growth, and a persistent shortfall could force banks to rely more on costlier wholesale funding, squeezing margins and potentially leading to tighter credit conditions for businesses and households. In a market where banks still dominate corporate financing, any contraction in lending capacity could ripple through the broader economy, slowing investment and growth. Furthermore, the funding strain may accelerate a strategic shift toward fee‑based services and digital platforms, reshaping the competitive landscape among Japanese banks and foreign entrants. How quickly banks can adapt will influence Japan’s ability to sustain its modest economic recovery and meet the financing needs of an aging, yet still dynamic, corporate sector.

Key Takeaways

• SMFG deposits grew 2.7% YoY in Q4 2025, while loans rose 3.4%
• MUFG deposits rose 2.5% YoY, versus a 5.1% loan expansion
• Hideo Oshima warned the deposit‑loan gap is unlikely to shrink soon
• M&A activity in Japan increased 8.8% to 5,115 deals in 2025
• Banks may turn to wholesale funding or fee‑based income to offset deposit shortfalls

Pulse Analysis

Japan’s megabanks are confronting a structural funding mismatch that mirrors a broader global trend: low‑interest‑rate environments compressing deposit growth while corporate demand for credit remains resilient. Historically, Japanese banks have relied on a deep, stable retail deposit base, a legacy of the post‑war era when household savings rates were high. The current environment, however, is characterized by modest wage growth, an aging population, and a shift toward alternative savings vehicles, all of which dilute the traditional deposit pool.

The immediate implication is a potential re‑pricing of bank funding. Wholesale bond markets in Japan have been relatively cheap, but increased reliance on them could expose banks to market volatility and higher refinancing risk, especially if global interest rates rise. Moreover, the pressure to maintain capital adequacy may push banks to prioritize higher‑yielding, lower‑risk assets, potentially curbing risk‑taking in sectors that need financing the most, such as SMEs and green projects.

Strategically, the funding gap could catalyze a faster digital transformation. Banks that can attract deposits through fintech‑enabled platforms, offering higher yields or seamless integration with lifestyle services, may mitigate the shortfall. Simultaneously, the push toward fee‑based services—wealth management, payments, and cross‑border remittances—could diversify revenue streams and reduce dependence on net interest margins. The upcoming earnings releases will reveal whether SMFG and MUFG are already reallocating resources toward these avenues, setting a precedent for the rest of the Japanese banking sector.