I just realized that the costs in business are more complicated than I thought, especially when it comes to financial planning. What helps in understanding is distinguishing between fixed costs and variable costs.

Let's start with the simplest thing first: what are fixed costs? They are expenses that do not change regardless of how much the business produces or sells, such as office rent, regular employee salaries, and insurance. All of these must be paid every month even if sales decline.

What you need to understand is that fixed costs play an important role in financial planning. If you don't know what fixed costs are and how much they are, you won't be able to set the correct product prices. You need to calculate to ensure that the selling price covers both fixed and variable costs plus profit.

A clear example of fixed costs includes factory rent, loan interest, depreciation of machinery, executive salaries, and business insurance. All of these occur whether or not you sell any products on that day.

In contrast to fixed costs, variable costs change according to the production or sales volume. When production increases, variable costs also increase. When production decreases, variable costs decrease. Examples include raw materials, direct labor, packaging, and transportation—all of which increase with the number of products produced.

What is important is to combine both types of costs to get an overall picture of total costs. This helps the business make better decisions, such as setting prices, planning production, investing in machinery, or assessing how market changes will impact profits.

In fact, understanding what fixed costs are and how to manage them well is a key to maintaining financial stability in a business. If you can control these costs effectively, you can grow sustainably in the long term.