Bajaj Finance's business model is a customer acquisition and cross-sell machine built on the foundation of consumer durables financing — a model that is simultaneously simpler than it appears (lend money, collect repayment with interest) and more sophisticated than any competitor has successfully replicated in India. The consumer lending segment is the historical core and current largest component of Bajaj Finance's AUM, contributing approximately 55-60% of total assets under management. Within consumer lending, the primary sub-products are: consumer durables loans (financing white goods, electronics, and furniture at retail points), digital product loans (smartphones and laptops through dedicated digital retail channels), lifestyle finance (two-wheelers, home furnishings, personal loans for specific purchases), and personal loans (unsecured loans to existing customers with strong repayment histories). The consumer durables segment operates primarily on the zero-cost EMI model — no interest to the consumer, with retailers paying subvention fees — while personal loans are interest-bearing at rates reflecting the customer's risk profile and relationship tenure with Bajaj Finance. The SME and commercial lending segment contributes approximately 20-25% of AUM. Bajaj Finance lends to small and medium enterprises through loan against property (LAP), SME business loans, and supply chain finance products that leverage the company's existing retail network relationships. The SME lending segment carries higher loan ticket sizes (2-50 million rupees) than consumer lending but is approached with the same granular credit scoring methodology — Bajaj Finance's proprietary credit models use thousands of behavioral data points rather than relying solely on bureau scores and income documentation. The LAP segment — secured against real estate collateral — provides Bajaj Finance with lower credit risk than unsecured SME lending while accessing the large pool of small business owners who are asset-rich but cash-flow documentation poor, a segment underserved by formal banking due to documentation requirements that Bajaj Finance's underwriting model can partially circumvent through collateral security. The deposits business — Bajaj Finance Public Deposits — is strategically important beyond its contribution to funding costs. As an NBFC with a Deposit-Taking classification from the RBI, Bajaj Finance can accept fixed deposits from retail investors and institutions, providing a stable, retail-funded liability base that reduces dependence on wholesale market borrowing and bank lines of credit. Bajaj Finance's deposits book has grown to approximately 600+ billion rupees, making it one of the largest NBFC deposit franchises in India. The deposits product — offering interest rates slightly above bank FD rates with AAA credit rating from domestic agencies — attracts conservative retail investors and provides Bajaj Finance with funding cost advantages over pure-wholesale-funded competitors. The insurance distribution and payments revenue from Bajaj Finserv (the parent entity) ecosystem — Bajaj Allianz Life Insurance, Bajaj Allianz General Insurance, and the Bajaj Finserv app's payments and wealth features — is not directly consolidated in Bajaj Finance's P&L but is relevant to understanding the full financial services ecosystem within which Bajaj Finance operates. Bajaj Finance customers are cross-sold insurance products through the lending relationship, generating fee income and deepening the financial product relationship that increases customer retention and lifetime value. The revenue model is primarily net interest income (NII) — the spread between the interest rate Bajaj Finance earns on its loan book and the cost of funds from deposits, bank borrowings, and market debt. The gross yield on Bajaj Finance's loan book runs at approximately 16-18% (blended across secured and unsecured products), while cost of funds runs at approximately 7-8%, generating a net interest margin of approximately 10-11% — among the highest in Indian financial services and significantly above the 3-4% NIM that most scheduled commercial banks achieve. The high NIM reflects both the higher risk of consumer and SME lending relative to corporate lending and the pricing power that Bajaj Finance's distribution and cross-sell infrastructure allows it to sustain despite competitive pressure. Fee income — processing fees, prepayment charges, insurance commission, and other non-interest revenue — contributes approximately 15-20% of total income, providing a revenue buffer during periods of interest rate compression or slowing loan growth.