Why is separation of duties important in internal controls?

• A. It speeds up processing
• B. It simplifies audits
• C. It reduces opportunity for fraud by ensuring no single person controls all steps
• D. It eliminates the need for internal controls

Answer: (C)

Separating duties means dividing the steps of a process among different people so no one person handles all phases—authorization, execution, and recording. This creates checks and balances: if someone tries to commit fraud or makes an error, another person involved in a different step is in a position to catch or question it. By ensuring that one person does not have control over all aspects of a transaction, the opportunity to manipulate records without detection is greatly reduced. This is the essence of why separation of duties is a fundamental safeguard in internal controls: it directly decreases fraud risk by requiring multiple people to be involved in a process.

The other ideas aren’t the primary purpose: separating duties tends to add review steps that can slow processing somewhat, it isn’t primarily about making audits easier, and it certainly doesn’t remove the need for internal controls.