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Fixed costs are expenses that remain constant, regardless of the amount of goods or services produced. These expenses do not change with the level of output and include costs such as rent, salaries, and insurance. Because these costs remain the same, businesses do not consider them when making short-term production decisions.
Assessing whether to produce more units often hinges on whether the revenue will cover the variable costs involved. Since fixed costs are already "sunk" in the short term, businesses often treat them as irrelevant for specific decisions, such as whether to accept a special order at the contribution margin level. However, while they might be ignored in short-term decision-making, fixed costs need to be covered by the total revenue in the long run to ensure profitability.

• Examples include rent, machinery depreciation, and salaried employees.
• Fixed costs are often monitored for budget planning and overall profitability analysis.

Ignoring fixed costs can lead to poor strategic decisions if not balanced with the long-term picture.

Variable costs are expenses that vary directly with the level of production. These costs change as the production volume changes, meaning they increase with increased output and decrease when production is less. Examples include costs of raw materials, direct labor (that's paid by the hour or unit), and utilities like electricity used in production.
Understanding variable costs is crucial for determining the contribution margin, which helps businesses decide on pricing, sales strategies, and whether to continue, scale up, or cease production of a product. When the price at which a product is sold is higher than its variable cost, the remaining revenue contributes towards covering fixed costs and then generating profit.

• Examples include materials, direct labor, and piece-rate labor costs.
• Variability allows businesses to adapt and adjust production according to demand forecasts.

Accurate tracking of variable costs is essential for timely and effective decision-making in both production and pricing strategies.

Profitability analysis involves examining and understanding how different factors affect a company's profitability and helps in making informed decisions to improve financial performance. It includes analyzing both fixed and variable costs to determine their impact on the net income.
By evaluating the contribution margin (the difference between selling price and variable costs), businesses can assess which products or services are the most profitable. A product with a positive contribution margin not only covers its variable costs but also helps in offsetting fixed costs, which is key to maintaining profitability.

• Profitability analysis helps in identifying cost-cutting opportunities or the need to maybe cease a low-margin product.
• It assists in strategic decisions like pricing, product development, and market positioning.

Ultimately, the goal is to ensure all products contribute positively to both covering fixed costs and earning a surplus to enhance profit.