I just realized that the issue of costs in business is really important. If you don't understand it, it's hard to know whether you're truly making a profit or incurring a loss. Today, let's talk about fixed costs and variable costs. Actually, it's simpler than you think.

Let's start with fixed costs. Fixed costs are expenses that do not change with production or sales. No matter how busy or quiet the business is, these costs must be paid in full every month, such as rent for a home office or a storefront, salaries for permanent staff, business insurance, or interest on loans.

Why are fixed costs important? Because they help us plan finances clearly. If you know how much you need to pay each month, you can calculate a selling price that covers these costs. You need to think carefully about how much to set the price of your products or services so that it can cover these fixed costs and still leave a profit.

Examples of fixed costs include, first, rent—whether for a factory, office building, or retail space—paid consistently every month. Second, employee salaries, especially for full-time staff who receive a fixed monthly wage regardless of sales or production volume. Third, insurance—whether for buildings, equipment, or liability—must be paid regularly.

Another important one is depreciation of equipment and machinery. If you buy machinery, you need to account for depreciation each month based on its useful life, plus interest on loans. If the business has borrowed money, the interest payments are also fixed costs that must be borne continuously.

Next is variable costs, which are the opposite of fixed costs. Variable costs change according to the level of production or sales. The more you produce, the higher these costs; the less you produce, the lower they are.

Examples of variable costs include raw materials. If you need to produce 100 units, you need 100 units of raw materials. If you produce 200 units, you need 200 units of raw materials. Direct labor costs—if workers are paid based on the number of units produced or hours worked—will increase with higher production. Energy and water costs also rise with increased machinery use, electricity, and water consumption.

Another example is packaging costs. If you need to sell 100 items, you need 100 boxes or packaging materials. Transportation and shipping costs also increase with more products to send. Sales commissions are another variable; if the sales team earns commissions based on sales volume, higher sales mean higher commissions.

Why is understanding variable costs important? Because it helps us know that if we want to reduce the cost per unit, we need to produce more. Conversely, if the market demand decreases, we should cut back on production to avoid unnecessary expenses.

Now, let's look at the differences between the two. Fixed costs are fixed; they are ongoing expenses regardless of what the business does or doesn't do. Variable costs are flexible; they can be reduced if production decreases.

In fact, knowing both types of costs is fundamental because it helps us:

Make better decisions. For example, if we want to reduce overall costs, we might invest in machinery to lower variable labor costs, even if it increases fixed costs. In the long run, this could be worthwhile. Or, when setting prices, we need to cover both fixed and variable costs and still make a profit.

In summary, fixed costs and variable costs are tools that help us manage the business effectively. If we understand and manage them well, we can increase profits and maintain financial stability in the long term.