What it means
In business, you rarely do everything yourself. Owners hire managers, and shareholders appoint executives to run companies, creating a relationship where the owner is the principal and the manager is the agent.
Trouble starts because the two parties do not always want the same things. Owners want long-term growth and maximum profit, while managers might prefer higher salaries, less stressful workdays, or prestige projects that look impressive on a CV but waste company money.
Most managers are not dishonest, but they respond to different incentives. This gap is known as the principal-agent problem, and it is the root cause of agency costs.
To bridge this gap, owners spend money on monitoring tools, such as external audits, approval workflows, and performance tracking systems. They also offer performance bonuses and share options to encourage managers to act in the business's best interests.
These incentives cost money, which directly reduces overall profitability. Another part of this concept is residual loss.
Even with the best monitoring systems and bonuses, managers will still occasionally make choices that benefit themselves rather than the owners. For example, booking an expensive business class flight instead of an economy ticket creates a cost that the owner absorbs because they are not running the daily operations.
Understanding this dynamic helps managers design better compensation structures that reward people when the business succeeds, which keeps overhead low. A shared goal reduces friction and wasted expenditure across the board.
Think of a property owner who hires a contractor to renovate a rental flat. The owner must check invoices, inspect the work, and sometimes pay a premium for a reputable firm, which is the cost of making sure the job is done properly.
In practice
Real-world examples
Example 1
As a tech startup founder, you hire a chief executive to manage daily operations. To keep them focused on growth, you pay a high salary plus bonuses tied to revenue targets, which adds an extra $50,000 a year to your costs. Without that incentive, the executive might prioritise a comfortable pace over the aggressive growth investors expect.
Example 2
You own a regional logistics firm and hire a fleet manager. You must install GPS tracking systems and pay an auditor $1,500 a month to review fuel receipts, so the manager cannot use company vehicles for personal trips. The auditor alone costs $18,000 a year, before the GPS hardware is counted.
Example 3
A large retail chain's executive team insists on leasing a luxury office suite in a prime city-centre tower to project status. The lease adds $400,000 a year in overhead that does not directly improve store sales. Shareholders eventually question the spending, which is a clear example of an agency cost.
Think of it
Imagine hiring a dog walker while you are away. You want your dog to get healthy exercise, but the walker might take shortcuts and sit on a park bench to chat on their phone. You end up paying for a security camera to watch them, which is the cost of ensuring they do the job properly.
Formula
Calculation
Agency Cost = Monitoring Costs (audits, tracking systems) + Bonding Costs (incentives, bonuses) + Residual Loss (remaining misaligned spending). For example, if a firm spends $10,000 on audits, $15,000 on bonuses, and suffers $5,000 in wasteful manager spending, the total agency cost is $10,000 + $15,000 + $5,000 = $30,000.Case study
Seen in the real world
This is a fictional, illustrative scenario. GreenLeaf Logistics, a mid-sized freight company owned by Sarah, grew rapidly over three years. Sarah stepped back from daily operations and appointed a new managing director, Mark, to run the business. Soon, Sarah noticed profit margins shrinking despite steady sales.
She discovered that Mark had hired several personal friends into management roles at inflated salaries and approved a company-funded luxury car scheme. To fix this, Sarah introduced new governance rules, starting with an independent auditor who reviews all payroll decisions every quarter at a cost of $5,000 a year. She also restructured Mark's contract, replacing his high fixed salary with performance-based shares tied to net profit growth. The board approved both changes within a month.
Setting up these legal agreements and performance metrics cost a further $8,000 in one-off advisory fees. These interventions aligned Mark's goals with the company's financial health and reduced wasteful spending. However, the business now carried $13,000 of agency costs in its first year, made up of $5,000 in recurring audit fees and $8,000 in one-off advisory fees. This shows that keeping an eye on hired leadership always has a tangible price tag.
Watch out
Common mistakes
- Assuming employees naturally share the exact same financial priorities as the business owner.
- Believing that offering high salaries completely removes the risk of wasteful spending.
- Failing to monitor management activity, which often leads to unchecked expenses and falling profit margins.
Questions
People also ask
Are agency costs always a bad thing?
Not entirely. While they represent expenses you would rather avoid, some agency costs, like performance bonuses, are necessary investments to keep managers focused on growth.
How can small business owners reduce these expenses?
You can lower these costs by tying staff bonuses directly to company profits, maintaining transparent reporting, and keeping a close eye on discretionary spending.
Do these costs only apply to large corporations?
No. Any time you delegate authority to another person, whether it is a store manager in a small shop or a corporate executive, agency costs exist in some form.