comparison
Section 508 vs WCAG 2.1
Section 508 (Section 508 of the Rehabilitation Act, United States — federal government and federal contractors, 1998 (2017 Refresh)) and WCAG 2.1 (Web Content Accessibility Guidelines 2.1, Global, 2018) are two of the most-referenced accessibility frameworks in digital compliance. This guide compares them side by side — jurisdiction, scope, conformance approach, penalties, and how a single audit can cover both simultaneously.
What is Section 508?
Section 508 of the Rehabilitation Act requires US federal agencies, federal contractors, and recipients of federal funds to make their information and communications technology (ICT) accessible to people with disabilities, with conformance benchmarked against WCAG 2.0 Level AA via the 2017 Refresh.
Maintainer
US Access Board
Jurisdiction and enforcement
United States — federal government and federal contractors. GSA, agencies, US Court of Federal Claims.
What is WCAG 2.1?
WCAG 2.1 is the World Wide Web Consortium's accessibility standard published June 2018, adding 17 success criteria to WCAG 2.0 — primarily addressing mobile, low vision, and cognitive disabilities — and currently referenced as the conformance baseline by the European Accessibility Act and most procurement frameworks.
Maintainer
World Wide Web Consortium (W3C)
Jurisdiction and enforcement
Global. Referenced by EN 301 549 (current EU baseline) and many national laws.
Section 508 vs WCAG 2.1 — the key differences
The principal difference is jurisdictional: Section 508 applies in United States — federal government and federal contractors, while WCAG 2.1 applies in Global. Section 508 is maintained by US Access Board; WCAG 2.1 is maintained by World Wide Web Consortium (W3C). The standards differ on scope, conformance grading, and penalty structure — but a well-designed accessibility programme can satisfy both simultaneously by adopting the strictest applicable requirement and cross-mapping findings.
Scope
Section 508 covers: Federal-agency websites and applications, Federal-contractor ICT, ICT procured with federal funds. WCAG 2.1 covers: Web content, Mobile web, Web applications.
Penalties
Section 508: Procurement disqualification. WCAG 2.1: Same as WCAG 2.2 — penalties are downstream of the national law citing WCAG.
How to comply with both at once
Adopt the stricter applicable conformance level — typically WCAG 2.2 Level AA — as your engineering baseline. Audit against that baseline once, then cross-map findings to both Section 508 and WCAG 2.1 specific requirements. A single Accessibility Conformance Report (ACR) using VPAT 2.5 INT can document both.
When you might need just one
If you operate exclusively in United States — federal government and federal contractors and have no cross-border procurement exposure, you may only need Section 508. The same applies in reverse for WCAG 2.1. For organisations selling cross-border, into the EU or US public sector, the safer default is to plan to both simultaneously.
Sources
- Section508.gov — GSA
- Section 508 Standards (ICT Refresh) — US Access Board
- Web Content Accessibility Guidelines (WCAG) 2.1 — W3C
FAQ
Frequently asked questions
Cited answers. Sourced. Updated as standards and case law change.
Is Section 508 stricter than WCAG 2.1?
Neither standard is uniformly "stricter" — they cover different regulatory domains. Section 508 is more prescriptive about federal-agency websites and applications; WCAG 2.1 about web content. For organisations exposed to both, a unified WCAG 2.2 AA baseline typically satisfies the technical requirements of both.
Can a single audit satisfy Section 508 and WCAG 2.1?
Yes. Both standards ultimately reference WCAG-aligned criteria. A combined audit with cross-mapped findings can produce documentation acceptable to both regulators.
Which jurisdictions enforce Section 508?
United States — federal government and federal contractors. GSA, agencies, US Court of Federal Claims.
Which jurisdictions enforce WCAG 2.1?
Global. Referenced by EN 301 549 (current EU baseline) and many national laws.
What happens if I am not compliant with Section 508?
Procurement disqualification Contract termination or modification Bid protests at GAO and US Court of Federal Claims Reputational and downstream civil-rights exposure under Sections 501 and 504
What happens if I am not compliant with WCAG 2.1?
Same as WCAG 2.2 — penalties are downstream of the national law citing WCAG
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