Fixed costs, also known as overhead costs, are expenses that do not change with the level of production or sales. They are a necessary part of a business's operations and are often incurred whether or not the company is producing or selling anything. Some common synonyms for fixed costs include operating expenses, standing charges, and continual costs. These costs are essential, as they cover rent or mortgage payments on buildings, utilities, insurance, salaries and benefits of employees, and other expenses that are not dependent on production volume. Understanding the different synonyms for fixed costs can help business owners and managers better manage their expenses and budget more effectively.