CarMax generates revenue through three integrated business segments: retail used vehicle sales, wholesale vehicle auctions, and CarMax Auto Finance (CAF). In fiscal 2025, the company reported $26.35 billion in net sales and operating revenues, with used vehicle sales contributing $21.08 billion (80.0% of total), wholesale vehicle sales contributing $4.59 billion (17.4%), and other sales and revenues contributing $686.3 million (2.6%). The retail operation is the core revenue driver: CarMax acquires vehicles through consumer trade-ins, direct consumer purchases, dealer purchases, and wholesale auctions, then reconditions them to 'CarMax Quality Certified' standards before sale. The company employs proprietary pricing algorithms that analyze millions of market data points to set competitive no-haggle prices. Gross profit per retail used unit was $2,311 in fiscal 2025, up 1.0% from $2,287 in fiscal 2024, while gross profit per wholesale unit was $1,024. The reconditioning and service operation generates additional margin through extended protection plans (EPPs), vehicle repair services, and guaranteed asset protection (GAP) products. EPP margin grew to $575 per retail unit in fiscal 2025, up from $506 in fiscal 2024. CarMax Auto Finance (CAF) is the second major profit engine, contributing $581.7 million in income in fiscal 2025. CAF provides financing to retail customers purchasing vehicles from CarMax, managing a $17.68 billion portfolio of auto loan receivables as of February 28, 2025. CAF's net penetration rate was 42.7% in fiscal 2025 (after 3-day payoffs), with a weighted average contract rate of 11.3%. The finance operation generates income through the spread between interest and fees charged to consumers (averaging 9.7% of managed receivables) and funding costs (3.7%), minus provisions for loan losses (1.8%) and direct expenses (0.9%). In fiscal 2025, CAF originated $8.25 billion in net loans. The wholesale auction business sells vehicles that do not meet CarMax's retail standards or excess inventory to licensed dealers. Wholesale unit sales were 544,312 in fiscal 2025, generating $1,024 in gross profit per unit. The omni-channel platform integrates all three segments, allowing customers to complete transactions online, in-store, or through hybrid experiences. In fiscal 2025, 58% of retail units were sold through omnichannel transactions (where customers complete at least one of four activities online: reserving, financing, trading in, or creating a sales order), and 15% were fully online sales. Revenue from online transactions totaled approximately $7.6 billion, or 29% of net revenues. The company also generates revenue through third-party finance arrangements, where customers finance through other lenders but CarMax earns fees. After the effect of 3-day payoffs, third-party providers financed approximately 57.3% of used units sold in fiscal 2025. CarMax's business model depends on high inventory turnover: the company aims to minimize days' supply while maintaining broad selection. The national inventory pool allows customers to search across all 250 stores and arrange transfers. Store operations are supported by regional reconditioning centers and customer experience centers (CECs) that handle online inquiries and sales support. SG&A expenses were $2.44 billion in fiscal 2025 (9.2% of net sales), including advertising, compensation, occupancy, and technology costs. The company opened 5 new stores in fiscal 2025 and plans continued selective expansion.