- State Bank of India is the largest commercial bank in India and a proxy for the Indian economy itself, serving over 53 crore customers through a universal banking model that touches every corner of the country’s financial life. Born from the Bank of Calcutta in 1806 and constituted by an Act of Parliament in 1955, the institution was forged into its modern shape by the merger of its associate banks and, more recently, by a decade-long bet on technology that produced the YONO digital platform. The recurring approach is a ‘phygital’ strategy - pairing the largest physical network of 22,219 branches with a digital backbone that now handles 94% of all transactions, making the bank a low-cost deposit-gathering machine that funds lending across every segment from farmers to Fortune 500 companies.
Business segments
Four engines at different stages - a deposit-and-lending powerhouse that funds the nation, a corporate and international franchise that finances infrastructure and trade, a treasury that manages the surplus, and a financial conglomerate of market-leading subsidiaries that cross-sell insurance, cards, and investments - all fed by a shared digital backbone.
1. Domestic banking: the deposit engine that lends to a nation
A structural advantage in low-cost deposits - nearly three times the savings balances of the next largest bank - lets SBI lend to every segment of the Indian economy while earning a healthy spread.
- Cheapest deposit base in the system - the domestic CASA ratio (current and savings accounts that pay little or no interest) was 39.46%, with savings bank deposits alone at ₹18.8 trillion, so the bank’s cost of funds stays low and its net interest margin holds at 3.03%.
- Largest home lender in the country - a ₹9.4 lakh crore home loan book commands 28.1% market share, and the bank also leads in auto loans (18.7% share) and education loans, making it the default choice for retail borrowing.
- The farmer’s bank - agriculture lending crossed ₹2,58,612 Crore, serving more than 1.45 crore farmers, with pre-approved dairy loans up to ₹3 lakh without collateral and a dedicated YONO Krishi digital platform, so credit reaches the countryside without a branch visit.
- Government’s banker by default - SBI is the sole refund banker for income tax, the sole payment banker for EPFO (7.5 crore subscribers), and the exclusive customs-duty collector at all 37 international airports, earning a steady stream of fee income (₹4,696 crore in government commissions in FY26) while cementing a relationship no competitor can easily dislodge.
- The cleanest book in two decades - gross NPAs at 1.49% and net NPAs at 0.39% mean the bank is no longer provisioning for past mistakes; instead, recoveries from written-off accounts contributed ₹10,054 crore to income in FY26.
2. Corporate and institutional banking: the infrastructure financier
When a power plant, port, or highway needs funding in India, SBI is the arranger that competitors say they don’t see in the race.
- Preferred banker for financial closures - the Project Finance and Structuring unit appraises and syndicates loans for large-scale infrastructure across power, roads, ports, and airports, with management stating “we don’t see any competition” in this space.
- Safe corporate book - roughly 40% of corporate advances are to PSUs and government departments, and 73% of the corporate rating mix is AA or above, so the risk of default is concentrated in the safest names.
- Transaction banking locks in current accounts - technology-driven cash management products and dedicated transaction banking hubs in 27 cities help corporates manage their money, which builds a ₹3.81 trillion current account base that lowers the bank’s overall cost of deposits.
- Trade finance at scale - two global trade finance centres in Hyderabad and Kolkata handle letters of credit and bank guarantees, with 72% of import LCs and 86% of inland LCs now processed digitally, speeding up trade for corporate clients.
3. International banking: the diaspora’s window to India
A network of 245 offices across 29 countries captures the savings of Indians abroad and finances the trade flows that connect them to home.
- NRI deposits as a stable funding source - with a 22% market share in NRI deposits and a base of roughly 37 lakh NRI customers, the bank gathers foreign-currency savings through 83 dedicated NRI branches and tie-ups with 55 exchange houses in the Middle East.
- Lending follows Indian corporates overseas - the international loan book of ₹7.4 lakh crore is split roughly one-third each between local lending, India-linked loans, and trade finance, with the US and UK alone accounting for 44% of the book.
- Clean international book - the gross NPA ratio for the international portfolio was just 0.13%, reflecting a deliberate pause in riskier geographies and a focus on lending where the bank understands the credit.
- YONO goes global - the digital app is now available in the US, UK, Canada, and several other markets, with more than 2,07,000 overseas customers onboarded and non-face-to-face account opening live in the UK and Canada, so NRIs can bank without visiting a branch.
4. Financial services ecosystem: the cross-sell conglomerate
SBI owns market-leading positions in life insurance, mutual funds, credit cards, and general insurance - each a standalone leader that feeds off the parent’s customer base.
- India’s largest mutual fund manager - SBI Funds Management has been the market leader since Q4 FY20, with a quarterly average AUM of ₹12.5 lakh crore and a 15.3% market share, plus the largest ETF franchise at 33% share.
- Private life insurance leader - SBI Life is number one among private players in new business premium across every major category, with an embedded value of ₹80,791 crore and a distribution army of 2.8 lakh individual agents layered on top of SBI’s branch network.
- Second-largest credit card issuer - SBI Cards holds 2.21 crore cards in force with an 18.6% market share, and it acquires customers digitally through partnerships with PhonePe, Tata Neu, and Flipkart.
- The investment banking arm that arranges the most loans - SBICAPS ranked number one in India borrower loans as mandated lead arranger with a 22.6% market share, and its broking subsidiary serves more than 26 lakh customers.
- Pension fund giant - SBI Pension Funds manages ₹5,14,753 crore in AUM with a 35.63% market share among pension fund managers, and it is the default manager for the government’s Unified Pension Scheme.
YONO and digital backbone
A digital bank within the bank - 10 crore registered users, 94% of all transactions digital, and an in-house payment aggregator - turns SBI’s physical scale into a data-rich acquisition and cross-sell engine.
- Digital acquisition at scale - 66% of new savings accounts are now opened through YONO, with roughly 42,000 registrations and 28,000 accounts opened daily, so the branch is becoming a service centre rather than an origination point.
- Own payment rails - SBI contributes about 27% of all UPI transactions in India, has 25 crore debit cards in circulation, and is the only bank with its own in-house payment aggregator (SBIePay), integrated with 40 other banks.
- Data scientists as a competitive weapon - an in-house team of over 45 data scientists runs more than 90 live models, generating end-to-end Digital Asset Business worth INR 40,472 Crores in FY24 (~30% of total advances business from Analytical Leads), while generative AI tools are already deployed for staff knowledge management and back-office automation.
- Corporate digital banking - YONO for Business processed 51.6 crore transactions worth ₹297 lakh crore in FY26, and the API banking channel lets corporates plug their own systems directly into SBI’s infrastructure.
Group structure and partners
A listed parent with controlling stakes in three separately listed subsidiaries - SBI Life, SBI Cards, and soon SBI Funds Management - plus a web of wholly-owned arms that dominate their niches.
- SBI holds 55.33% of SBI Life Insurance, 68.58% of SBI Cards and Payment Services, and 61.91% of SBI Funds Management, with an IPO of the latter approved in November 2025 and expected to list in 2026.
- Wholly-owned subsidiaries include investment bank SBICAPS, factoring arm SBI Factors, and operations support company SBOSS, which deploys over 8,100 field staff to support rural and semi-urban branches.
- The bank operates seven foreign banking subsidiaries - including in the UK, US, Canada, and Mauritius - and one joint associate, Bank of Bhutan (20%).
- SBI sponsors nine Regional Rural Banks under the “One State One RRB” framework, with 4,181 branches across 196 districts, extending the group’s reach into the deepest rural pockets.
- Recent structural moves include the divestment of the entire stake in Jio Payments Bank (June 2025), the sale of a 13.18% stake in Yes Bank to Sumitomo Mitsui (September 2025), and RBI approval to establish a digital payments intelligence platform to combat fraud using AI and blockchain, with approval to hold shares in excess of 30%.