Section 508 vs WCAG: Key Differences & Which Applies to You

Section 508 vs WCAG: Two Frameworks That Shape ICT Accessibility

Section 508 and WCAG are often mentioned together, but they are distinct frameworks with different scopes, legal weight, and applicability. Section 508 is a federal law enacted under the Rehabilitation Act of 1973, while WCAG is a technical standard published by the World Wide Web Consortium. Knowing which applies to your organization determines your compliance obligations, testing approach, and legal exposure.

Key Differences Between Section 508 and WCAG

• Section 508 is federal law; WCAG is a technical standard
• Section 508 covers all ICT (hardware, software, documents, telecom); WCAG covers web and digital content
• Section 508 applies to federal agencies and contractors; WCAG applies broadly when referenced by law
• Section 508 Refresh (2017) incorporates WCAG 2.0 Level AA by reference
• WCAG 2.1 and 2.2 add criteria not yet formally incorporated into Section 508
• ADA Title III enforcement references WCAG 2.1 AA for private-sector websites

Which Standard Applies to Your Organization?

If you are a federal agency or a contractor selling ICT to federal agencies, Section 508 governs your requirements. State and local government entities face ADA Title II obligations where courts increasingly use WCAG 2.1 AA. Private-sector organizations face ADA Title III obligations where plaintiffs use WCAG 2.1 AA as the de facto standard. Many organizations operating across sectors must satisfy both frameworks simultaneously.

When You Need Both Section 508 and WCAG Compliance

A vendor selling a software platform to a federal agency while also offering it commercially must meet Section 508 for the federal contract and WCAG 2.1 AA for broader ADA reasons. Government contractors building customer-facing portals accessible to the public encounter both obligations simultaneously. Aligning both standards in a single remediation program is more efficient than treating them separately.

Practical Steps for Navigating Both Frameworks

• Audit all ICT to identify Section 508 procurement scope
• Test web content against WCAG 2.0 AA as the Section 508 baseline
• Extend testing to WCAG 2.1 AA for mobile and cognitive criteria
• Produce VPATs for federal-facing products and services
• Review contracts for explicit WCAG or 508 conformance clauses
• Establish an accessibility policy referencing both frameworks