The PCI Security Standards Council released its Information Supplement for Compensating Controls and the Customized Approach on June 11, 2026. The most significant change is that assessed entities now own major parts of compensating control development.
If your team has been relying on your QSA to fill out compensating control worksheets, that era just ended.
What Changed
The Information Supplement formalizes a shift many QSAs have been advocating: assessed entities must actively develop and document their own compensating controls. You're responsible for defining business constraints, explaining control objectives, documenting risk analysis, and maintaining validation processes.
The supplement also clarifies roles around the Customized Approach and provides examples in appendices that QSAs will use during assessments. The operational impact is greatest on compliance teams that haven't previously articulated why a requirement can't be met as stated or how their alternative control addresses the same risk.
Key Findings
Assessed entities must document seven specific elements for each compensating control:
Your team must define technical and business constraints, explaining why meeting the requirement as written isn't feasible. You must reference the Guidance column from PCI DSS to show how your control addresses the original requirement's objective. Document the objective your compensating control meets, any additional risk introduced, your validation and testing methodology, and your maintenance processes.
Most assessed entities can't complete these elements without significant QSA coaching. The supplement acknowledges this by making the documentation requirement explicit.
One compensating control can address multiple requirements, but documentation scales linearly:
If your segmentation architecture compensates for both firewall requirements and network isolation controls, you need separate worksheets for each requirement. The supplement states that "how each requirement is met by that compensating control must be documented separately in individual Compensating Controls Worksheets."
This creates documentation overhead when the same technical control applies across password requirements (Requirement 8.3.6, 8.3.7, 8.3.9) or encryption standards. You're explaining the same control architecture multiple times with minor variations in how it maps to each requirement's objective.
The Customized Approach roles remain unchanged but are now documented alongside compensating controls:
If you're using the Customized Approach, your responsibilities were already clear in PCI DSS 4.0. The supplement restates them for consistency. You define controls that meet the Customized Approach Objective, demonstrate how you achieve the stated outcome, and maintain evidence of effectiveness. Unlike compensating controls, which address constraints, the Customized Approach lets you meet the requirement's intent through alternative methods when you can prove equivalent or better risk mitigation.
QSAs must validate compensating controls independently for each requirement:
Even when the same control applies to multiple requirements, your QSA validates it separately against each requirement's objectives and risks. This affects assessment timelines and evidence requests. If you're using network segmentation as a compensating control for five requirements, expect five discrete validation exercises.
What This Means for Your Team
Your compliance team needs new capabilities. You need someone who can read PCI DSS Guidance columns and translate requirement objectives into control design language. You need someone who understands your architecture well enough to articulate genuine constraints, not preferences. You need documentation discipline to maintain compensating control validation evidence over time.
Budget more time for assessments that involve compensating controls. The days of your QSA drafting the worksheet while you provide verbal answers are over. You'll spend hours writing constraint definitions, mapping controls to objectives, and documenting risk analysis before your QSA even begins validation.
Consider whether compensating controls are actually necessary. The documentation burden may push you toward meeting requirements as stated when the technical lift is comparable to maintaining compensating control evidence. If you're compensating for Requirement 8.3.6 because you don't want to implement password complexity rules, the worksheet effort may exceed the implementation effort.
Action Items by Priority
Immediate (Before Your Next Assessment):
Inventory your current compensating controls. For each one, assign an owner who can document the seven required elements. Review the Information Supplement appendices with your QSA to understand what complete documentation looks like. If you're using one control for multiple requirements, map out which requirements it addresses and start separate worksheets now.
Within 90 Days:
Build a compensating control template that captures all seven documentation elements with prompts specific to your environment. Train your compliance team to reference PCI DSS Guidance columns when articulating requirement objectives. Establish a validation schedule for each compensating control; you need evidence of ongoing effectiveness, not just initial implementation.
Ongoing:
Treat compensating control worksheets as living documents. When your architecture changes, update constraint definitions. When you modify the compensating control, update validation procedures. Schedule annual reviews with your QSA to confirm your documentation still meets expectations before the formal assessment.
Reduce your compensating control footprint over time. Every compensating control creates documentation debt and validation overhead. As you refresh systems or redesign architecture, prioritize meeting requirements as stated.
