Key controls and material controls: understanding the difference

Managing hundreds of controls across multiple processes is the reality for many larger organizations. Knowing which ones to prioritize isn’t just helpful, it’s essential.

Two terms frequently used in this context are key controls and material controls.

While they are sometimes used interchangeably, they describe different ways of evaluating the importance of a control. In theory, the distinction is clear. In practice, it is often less so.

Understanding the difference helps organizations prioritize monitoring and testing while maintaining visibility across all risks and controls.

What are key controls?

Key controls are the controls that address the most significant risks within a process.

If a key control fails, there is a higher likelihood that a critical risk will not be prevented or detected. For this reason, auditors and internal control teams typically focus on key controls when evaluating the control environment.

A control is often considered key when it:

• Directly mitigates a significant risk
• Prevents or detects errors that could impact financial reporting
• Is relied upon during internal or external audits
• Has limited or no alternative controls addressing the same risk

Because of their role, organizations typically monitor, document and test key controls regularly.

Examples of key controls may include:

• Approval of journal entries above a defined threshold
• Segregation of duties between payment initiation and approval
• Management review of reconciliations
• Monitoring of privileged system access

These controls are central to managing risk within a process.

What are material controls?

Material controls focus on risks that could have a material impact on the organization.

Material typically refers to risks that could significantly affect financial statements, regulatory compliance or major operational outcomes. These controls are therefore linked to risks that could lead to material misstatements or significant compliance failures.

In many organizations, both key and material controls are closely tied to financial reporting frameworks such as internal control over financial reporting (ICFR) or regulatory requirements such as Sarbanes-Oxley (SOX).

Key controls vs. material controls: what is the difference?

The difference between key controls and material controls comes down to perspective.

Key controls are those that play a critical role in preventing or detecting significant risks within a specific process. As a result, they are often prioritized during audit testing.

Material controls focus on the impact of the risk being mitigated. They address risks that could have a material effect on the organization, particularly in relation to financial reporting or regulatory compliance.

In practice, the distinction is not always clear-cut. Controls that mitigate significant risks are often the same controls that could prevent material misstatements. In that sense, many key controls may also be considered material controls – just viewed through a different lens.

Some controls may therefore be both key and material, while others only fall into one category. The classification depends on the organization’s risk assessment and reporting requirements.

Why the distinction matters

Categorizing controls helps organizations focus their efforts effectively on risks associated with operational processes vs. material business impact.

While organizations should maintain visibility across all relevant risks and controls, identifying key and material controls helps prioritize monitoring, testing and review activities.

This becomes particularly relevant in a governance context. Many organizations have well-defined sets of key controls, but it is not always clear which of these are considered material from a reporting or board perspective.

Clarifying this distinction can reduce uncertainty and ensure that the right controls receive the appropriate level of attention.

In practice, this helps teams:

• Focus testing on the most critical risks
• Allocate resources more efficiently
• Strengthen oversight of internal controls
• Support more informed decision-making

How organizations identify key and material controls

Most organizations take a risk-based approach when classifying controls. This typically involves:

1. Identifying risks within a process
2. Assessing likelihood and impact
3. Mapping controls to those risks
4. Determining whether controls should be considered key or material

This approach helps ensure that the control framework reflects both risk significance and impact.

Key takeaway

Key controls and material controls both play an important role in a strong internal control framework.

• Key controls are critical for managing significant risks within an operational process
• Material controls address risks that could have a material impact on the organization

In theory, the distinction is straightforward. In practice, it depends on how organizations define and apply these concepts.

Understanding the difference helps organizations design more focused, risk-based control environments while maintaining visibility across their broader risk landscape. A well-structured control framework doesn't just support audit readiness, it gives teams the clarity to act on the risks that matter most.

Ready to see how this works in practice? Try our interactive demo to explore the platform at your own pace, or book a personalized walkthrough to see how Impero can support your specific control framework.