Firms' costs, revenue and objectives — common mistakes

In an exam, you must be able to draw and interpret diagrams showing the different price and output combinations for profit maximisation (MC=MR), revenue maximisation (MR=0), and sales maximisation (AC=AR). Clearly label all curves and equilibrium points to demonstrate the trade-offs between these objectives.

On one diagram, mark three output levels: Q_profit (MC = MR), Q_revenue (MR = 0), and Q_limit (just above AC of potential entrant). Label the price and profit at each. This scores highly in O-Level essays.

In neoclassical theory, it is the primary rational objective for owners. However, other objectives can also be rational depending on the context. For instance, a manager whose bonus is tied to revenue has a rational incentive to pursue revenue maximisation. Satisficing is a rational response to imperfect information and conflicting stakeholder demands. The 'rationality' of an objective depends on whose perspective is being considered and the specific circumstances of the firm.

Firms often have a hierarchy of objectives or pursue different goals at different times. A new start-up might prioritise sales growth to establish market share, while a mature firm might focus on profit maximisation. Most large firms engage in a form of satisficing, balancing profit targets with growth and CSR goals to keep various stakeholders content. These objectives are not always mutually exclusive, especially when considering different time horizons.

Not necessarily, especially in the long run. While some CSR activities can increase costs and lower short-run profits, they can also lead to long-term gains. A positive brand image can attract more customers and allow the firm to charge a premium price. Ethical practices can improve employee morale and productivity. Therefore, CSR can be seen as a long-term investment that can ultimately enhance, rather than reduce, overall profitability.