Businesses incur various costs in order to operate and produce goods or services. There are different types of costs that must be classified including direct costs, indirect costs, fixed costs, and variable costs. Direct costs are easily traceable to a specific product or service, like materials and labor. Indirect costs are harder to assign and relate more to administration. Fixed costs do not change with production levels, such as rent, while variable costs fluctuate depending on output, such as raw materials. Proper classification of costs allows businesses to analyze performance and make informed decisions.