Motilal Oswal's projections reveal a stark earnings growth divergence between private and PSU banks over FY26-28.
Net interest income follows a similar split, with private banks delivering around a 17% CAGR against 13% for state-owned lenders. For the full banking coverage universe, Motilal Oswal estimates a 15% earnings CAGR over the period, modestly ahead of consensus expectations of 14%.
This divergence isn't random. It reflects fundamental structural differences between the two banking cohorts. Private banks maintain a nearly one percentage point advantage in net interest margins—4.1% versus 3.0% for PSU banks as of March 2025. This gap reflects variations in operational efficiency, risk appetite, and deposit franchise strength. When you compound this margin advantage over three years, the earnings differential becomes substantial.
First, PSU banks gained loan market share from private sector peers because they operated with lower credit-deposit ratios at a time when deposit growth was a key industry-wide constraint. This gave them balance sheet flexibility to grow loan books faster. Second, substantial recoveries from legacy stressed assets provided a meaningful boost to profitability that supported both earnings growth and valuation re-rating.
Both tailwinds have now faded. The deposit-ratio advantage has narrowed as PSU banks' aggressive loan growth in FY26 absorbed their excess liquidity buffers. More importantly, there simply isn't as much legacy stress left to recover from. Total recoveries, including from written-off accounts, reached ₹86,971 crore in FY26, but the pool of recoverable assets is now depleted. Fresh slippages continued to decline, with the slippage ratio at just 0.7% for FY26. This means the one-time profitability boost that powered PSU banks' turnaround cannot be repeated.
The Reserve Bank of India has implemented a significant rate-cut cycle in 2025-2026, with cumulative cuts of 125 basis points bringing the repo rate to 5.25%. This creates asymmetric margin pressure for banks due to the transmission lag between asset and liability repricing. Asset yields reprice quickly—floating-rate loans adjust almost immediately, while the Weighted Average Lending Rate for fresh loans has fallen nearly 105 bps as of February 2026. But deposit rates remain sticky due to competitive intensity.
Most banks reported decline in NIMs in the January-March quarter of FY26. The Yield on Advances was sequentially lower as the quarter had the full impact of the 25 bps repo rate reduction. Banks like State Bank of India, Axis Bank and Indian Bank saw sharper pressure on margins during the quarter. Yet private banks can compound earnings at 21% CAGR even without valuation re-rating. How? Through operating leverage. HDFC Bank's cost-to-income ratio improved from 40.5% to 39.5% on a core basis. ICICI Bank delivered core operating profit growth of 9.2% YoY despite margin pressure. This efficiency offsets NIM compression. Transcripts +1
The cost of funds has bottomed out after the rate-cut cycle. Savings account rates are stable at ~2-3% with limited downside. Term deposit rates at major private banks have moved to 6.6-6.8% in early 2026. With funding costs unable to decline further, banks face a structural NIM constraint as asset yields continue to repricing downward while liability costs remain sticky.
This impacts PSU and private banks differently. Private banks maintain superior NIMs—ICICI Bank at 4.32%, HDFC Bank at 3.38%, Axis Bank at 3.62%. PSU banks operate at lower levels—SBI at 3.03%, Bank of Baroda at 3.04%, PNB at 2.61%, Canara Bank at 2.51%. The 100-150 bps NIM differential translates directly to profitability divergence. Private banks' stronger liability franchises with higher CASA ratios provide better cushion against margin pressure. PSU banks, with weaker deposit franchises, face greater NIM compression and limited ability to offset it through repricing. InvestorPresentations +6
Regulatory requirements on provisioning coverage ratios create another constraint for PSU banks. RBI requires banks to maintain a minimum PCR of 70% of gross NPAs. But PSU banks have been far more conservative—every single PSU bank maintains PCR above 90%. This creates a capital trap.
The surplus provisions above 70% can be segregated into a "countercyclical provisioning buffer," but this buffer can only be utilized during system-wide downturns with prior RBI approval. Floating provisions cannot be used for making specific provisions as per extant prudential guidelines—they can only be used for contingencies under extraordinary circumstances with board approval and prior RBI permission. This means significant capital is trapped in provisions that cannot be released to drive growth.
Private banks maintain PCR closer to the regulatory minimum of 70-80%, giving them greater capital flexibility. They can deploy capital more efficiently, supporting higher ROE and better earnings growth. PSU banks' conservative approach, while prudent from a risk perspective, constrains their ability to release capital and drive earnings compounding.
PSU banks have already experienced dramatic re-rating. The average P/B ratio for 11 major PSU banks has jumped from 0.35 in March 2020 to 1.14 in July 2025—a 225% surge over five years. Much of the turnaround story is already priced in. Private banks, by contrast, currently trade at an 18% discount to their 10-year average multiples on forward P/B basis. They've underperformed NIFTY 50 by ~10% over the past three years.
This creates a clear risk-reward divergence. Private banks offer superior earnings compounding potential (21% vs 8% CAGR) at attractive valuations. PSU banks face limited upside after their historic re-rating cycle, with structural tailwinds played out and earnings growth constrained to 8% CAGR. Analysts at Kotak Securities explicitly favor leading private sector banks for FY27, citing superior earnings compounding potential and more attractive risk-reward dynamics at current valuations.
State Bank of India stands as the notable exception among PSU banks. It's the only PSU bank to feature in Motilal Oswal's top picks alongside ICICI Bank, HDFC Bank, and AU Small Finance Bank. SBI's positioning differs fundamentally from other PSU banks like PNB and Canara Bank.
SBI's unmatched scale—balance sheet size crossed ₹76 trillion—creates systemic importance and an implicit government backing that provides funding advantages. Its domestic NIM of 3.03% is 50-60 bps higher than PNB's 2.61% or Canara Bank's 2.51%. The YONO platform gives SBI digital leadership among PSU banks. Its diversified business model with international operations provides multiple revenue streams. Most importantly, SBI demonstrates execution capability with clear guidance—1% ROA and 3% exit NIM targets. Transcripts +3
Other PSU banks lack these advantages. They face structural constraints: weaker liability franchises, lower NIMs, limited digital capabilities, and regional focus. Their earnings growth is constrained to single-digit ROE (9-11%) versus mid-teen ROE potential (12-14%) for SBI and 15-18% for large private banks.
The combination of RBI rate cuts, bottoming cost of funds, and deposit competition creates a challenging environment for banks. But the impact is highly differential. Private banks with robust deposit bases like HDFC Bank and ICICI Bank can weather margin pressure through operating leverage, balance sheet mix optimization, and fee income diversification. PSU banks with weaker liability franchises face sustained NIM pressure and limited execution capability in offsetting strategies.
The 2.5x earnings divergence is not a temporary phenomenon—it reflects structural advantages that will persist. Private banks' superior NIMs, stronger deposit franchises, better operational efficiency, and greater capital flexibility create sustainable earnings compounding potential. PSU banks' played-out tailwinds, liability franchise weakness, and PCR capital constraints limit their upside.
For investors, the message is clear. The valuation gap between private and PSU banks has narrowed, but the fundamentals gap is widening. Private banks offer better growth visibility at reasonable valuations. PSU banks, except SBI, face limited upside after their historic re-rating. The risk-reward dynamics favor private banks in FY27.
