Overhead expenses are the indirect, fixed or semi-fixed operational costs that a business incurs to support its ongoing operations — not directly attributable to the production of specific goods or delivery of specific services, but necessary for the business to function. Overhead expenses include: office rent and utilities, management salaries, administrative staff costs, legal and accounting fees, insurance premiums, depreciation of office equipment, telecommunications, marketing and advertising costs, and IT infrastructure expenses. In financial reporting, overhead expenses are recorded as operating expenses in the income statement — separate from the direct cost of goods sold — and contribute to determining EBITDA and operating profit. The overhead expense ratio (overhead expenses as a percentage of revenue) is a key efficiency metric: companies that successfully scale revenue while keeping overheads relatively constant demonstrate positive operating leverage — each additional rupee of revenue converts to a higher proportion of profit. For banking sector analysis specifically, the cost-to-income ratio (overhead costs divided by operating income) is the primary efficiency metric — Indian private sector banks typically achieve cost-to-income ratios of 35% to 45%, while public sector banks often report higher ratios of 50% to 60%. For equity investors, consistently rising overhead expenses faster than revenue growth is a warning signal of deteriorating operational efficiency, while successful overhead reduction during revenue growth demonstrates management's ability to improve the business's scalability and long-term profitability potential.