I just learned about this recently. It turns out that business costs are divided into two main types that directly affect decision-making: fixed costs and variable costs. If you understand them well, a business can plan its finances and set product prices more appropriately.

Let's start with fixed costs. These are costs that do not change with the volume of production or sales. Whether you produce a lot or a little, these costs remain the same. They are expenses that must be paid regardless, even if operations are halted.

Examples of common fixed costs include rent for factories or offices. This rent is paid monthly or yearly regardless of whether there is production or not. Salaries of permanent staff are also the same—unaffected by sales or production volume. Additionally, there are business insurance costs, depreciation of equipment, and loan interest—all of which are fixed costs that must be paid whether the business is operating or not.

Why should we care about fixed costs? Because they directly impact financial planning. If you know how much fixed costs are, you can set a selling price that covers these costs and still makes a profit. Proper management of fixed costs helps keep the business stable and allows for long-term growth.

On the other hand, variable costs are the opposite. They change in proportion to the level of production or sales. When production increases, these costs go up; when production decreases, they go down.

For example, raw materials used in manufacturing. The more products you make, the more raw materials you need to buy. Direct labor costs for workers involved in production also vary. Electricity and water bills for the factory, packaging costs, transportation and delivery expenses, and sales commissions—all fluctuate with the volume of production and sales.

The main difference is that fixed costs are stable and predictable, while variable costs offer more flexibility. If sales decline, you can reduce production and save on variable costs, but fixed costs still need to be paid.

Analyzing total costs (fixed costs + variable costs) is very important for business decision-making. It helps you set product prices, plan production, allocate resources, and assess competitiveness accurately. Sometimes, a business might decide to invest in machinery (a fixed cost) to reduce high variable labor costs. This is about balancing the two types of costs to improve efficiency.

In summary, understanding the difference between fixed and variable costs is a fundamental aspect of good business management. Whether small, medium, or large, knowing which costs are fixed and which are variable helps you make smarter decisions, reduce risks, and build financial stability for the long term.