Just realized that many people are confused between fixed costs and variable costs, especially when planning a business. Let me explain simply.

Honestly, if you understand these two types of costs well, your business can set appropriate prices, plan production efficiently, and know how much to sell to break even.

Let's start with fixed costs. These are expenses that do not change regardless of whether the business produces more or less. For example, office rent, regular employee salaries, insurance, loan interest payments. These must be paid every month whether you make sales or not. The depreciation of equipment is also a fixed cost.

Fixed costs are important for financial planning because they are ongoing obligations. Therefore, pricing must consider these costs; otherwise, the business will incur losses.

In contrast, variable costs are expenses that change according to the volume of production or sales. If production increases, variable costs go up; if production decreases, they go down.

Which of these is a variable cost? For example, raw materials used in production. If producing 100 units requires 100 units of raw material, but producing 200 units requires 200 units, that’s a variable cost. The same applies to direct labor wages, energy used in manufacturing, packaging, and transportation—all of these increase or decrease depending on the production volume.

Understanding which costs are variable is crucial for decision-making because reducing variable costs can directly increase profit. For example, finding suppliers with lower prices or reducing waste during production.

By combining fixed and variable costs, you get the total cost. From there, the business can calculate the break-even point, which is where revenue equals costs.

In fact, managing costs with understanding is the key to a sustainable business. Whether it’s making investment decisions in machinery or improving production processes, all should consider how fixed and variable costs will change.

Knowing which costs are variable is an important question because it greatly impacts business decisions. With good understanding, controlling costs and increasing profits become much easier.