What type of costs remain unchanged regardless of business activity levels?

Fixed costs are expenses that remain constant irrespective of the level of production or business activity. This means that even if a company produces more or less, certain costs, such as rent, salaries of permanent staff, and insurance, do not change.

Understanding fixed costs is crucial for businesses as they influence financial planning and budgeting. Businesses can predict these costs easily, allowing for smoother financial forecasting and stability in planning long-term projects. In contrast, variable costs fluctuate with production levels, so they would not fit this definition.

Direct costs relate specifically to the costs of production and can vary depending on the output, and indirect costs are related to the overall operations but can also fluctuate. Thus, fixed costs stand out as the type of costs that do not fluctuate with business activity levels.