expense

An expense is money that you spend on something. Your daily coffee, a train ticket, or a new car can all be an expense. Businesses track expenses carefully to see what they are spending, and people do the same when they budget for food, rent, travel, or other needs. You might have "business expenses" if you pay for things during a work trip and your company pays you back later. The word also appears in phrases like "at the expense of," which means one thing happens while causing loss or harm to another.

Think about it this way: if you earn income, you likely have expenses. It's a fundamental part of life and business! A surprising expense can throw off even the best-laid plans, so keeping track of where your money goes is key to staying on top of your finances.

The word "expense" refers to the cost of something or the money spent to buy it, do it, or maintain it. It is often more than a simple price tag because it can include the related costs that come with it. For example, the expense of owning a car is not just the price you pay to buy it; it also includes gas, insurance, maintenance, and repairs.

"Expense" is most commonly used as a noun. It refers to money that has to be paid: "The trip was a major expense." In business and accounting, it can also be used as a verb, meaning to record a cost in the accounts for a certain period: "We expensed the office supplies this quarter." That verb use is much less common in everyday speech.

In personal finance, expenses are often categorized into fixed costs (like rent or mortgage) versus variable costs (like entertainment or dining out). Businesses meticulously track expenses for accounting and tax purposes. They might manage "operating expenses" (day-to-day costs), "capital expenses" (investments in long-term assets like machinery), and "travel expenses" incurred by employees on the road.

The word also appears in the pattern "at the expense of." In that phrase, it means that one thing is gained or improved by causing loss, harm, or neglect to something else: "He worked long hours at the expense of his health." Historically, the word comes from the Latin expendere, meaning "to pay out." That origin fits its core idea well. Whether you're managing a home budget or a company account, understanding your expenses helps you see where your money is going and make better decisions.