Public Sector Banks (PSBs) are struggling to keep up with deposit mobilization compared to private sector peers, leading to a rise in costly wholesale borrowings. In the June 2026 quarter, while credit demand remained high, this funding gap has begun to pressure Net Interest Margins. Investors are now watching whether these banks can improve deposit acquisition to sustain their rapid loan-led growth.
The growth narrative for Public Sector Banks (PSBs) is facing a structural test as deposit inflows fail to keep pace with soaring loan demand. As of the June 2026 quarter, state-owned lenders have seen deposit growth of approximately 10.3% to 10.7%, which significantly trails the 13.8% to 14.3% growth recorded by private sector banks. This divergence has forced public lenders to increasingly rely on wholesale market borrowings to fund their credit expansion, a strategy that comes with distinct financial trade-offs.
Borrowing Costs and Margin Pressure
To bridge the widening gap between loan creation and incoming deposits, PSBs have ramped up their wholesale borrowings, which surged by nearly 29% year-on-year in the first quarter of the current fiscal year. In contrast, private lenders maintained a more conservative approach, with their borrowing growth limited to roughly 3%. This reliance on non-deposit funding is inherently more expensive than the traditional retail deposits that banks prefer for their lower cost. As these borrowing costs rise, the net interest margins (NIMs) of public sector banks face downward pressure. Investors are particularly focused on this dynamic because high loan growth, if funded by expensive wholesale money, may not translate into the same level of profitability seen in previous quarters.
Historical Shift in Market Share
The current funding squeeze reflects a longer-term trend in the Indian banking system. Over the past decade, public sector banks have seen their share of total system deposits drop from 76% in FY14 to 57% as of March 2026. While PSBs still hold a substantial balance sheet, the Loan-to-Deposit Ratio (LDR) has climbed to approximately 81% in June 2026, up from 77% a year ago. This rising LDR indicates that banks are using a larger portion of their available resources to support lending, leaving less room for maneuver if deposit growth remains sluggish.
The Sustainability of Growth
With system-wide credit growth continuing to run at roughly 16.5% compared to deposit growth of 11.5%, the pressure to acquire funds is likely to persist across the sector. For public sector banks, the key challenge is to improve their deposit acquisition efficiency to avoid the high cost of wholesale market reliance. The sustainability of their rapid credit expansion model will depend on whether they can bridge this deposit gap without further eroding their profitability. Moving forward, the most important monitorable for shareholders will be management commentary regarding retail deposit strategies and whether quarterly results show a stabilization in the cost of funds or further compression in operating margins.