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Get ReportThe Difference Between the ADA, Section 508, and WCAG
Building a strategy for digital accessibility compliance requires a basic understanding of U.S. accessibility laws, including the ADA, Section 508, and WCAG. We’ll explain those differences below, along with who needs to comply.
Author: Missy Jensen, Senior SEO Copywriter
Published: 05/17/2026
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If you’re new to digital accessibility, you might feel overwhelmed by the terminology — especially when researching compliance.
Terms like “508,” “ADA,” “Title II,” and “WCAG” can be confusing when trying to understand which compliance standards apply to you and how to implement them into your digital content. Understanding these terms is crucial to building a successful accessibility strategy, one that minimizes your legal risks and creates a good experience for your users.
Below, we’ll look at the differences between the U.S.’ top accessibility laws and how to make your digital content compliant with each.
The ADA vs. Section 508 vs. WCAG
The ADA is a U.S. civil rights law that requires businesses open to the public to ensure their programs and services, including online spaces, are accessible to people with disabilities. Section 508 is a federal procurement law that applies to government agencies and their contractors, requiring U.S. government technology to be accessible.
Neither law specifies exactly how to make online content accessible. That’s what the Web Content Accessibility Guidelines (WCAG) does: provide the technical standards that both laws reference when defining what digital accessibility actually requires.
How are the ADA, WCAG, and Section 508 Different?
The ADA, Section 508, and WCAG all aim to improve accessibility but differ in scope and application. The key difference is enforcement. The DOJ and private litigation enforce the ADA; Section 508 is enforced through federal procurement rules that apply to agencies and their contractors. WCAG has no enforcement mechanism on its own — it becomes enforceable only when a law references it, which both the ADA and Section 508 now do.
For example, if a retailer’s website lacks alt text for product images, that’s a potential ADA violation, but WCAG defines the alt text requirement and how to meet it. The same logic applies to federal agencies under Section 508.
The table below breaks down the differences further:
How the Three Standards Connect
These standards don’t operate in isolation; they’re designed to work together. Here’s how:
Section 508 formally references WCAG 2.0, updated to WCAG 2.1 level AA in January 2018 via the U.S. Access Board rule. The DOJ’s April 2024 final rule extended that same WCAG 2.1 Level AA requirement to state and local government websites and apps under Title II of the ADA.
Private-sector obligations under Title III don’t name a specific WCAG version, but WCAG 2.1 Level AA is the benchmark that courts and regulators consistently apply. In practice, meeting WCAG 2.1 Level AA is the clear path to meeting Section 508 or ADA requirements.
Which Standard Applies to Your Organization?
Your compliance obligations depend on who you are and who you serve. Federal agencies and their contractors must meet Section 508 requirements. State and local government websites and apps must meet WCAG 2.1 Level AA under the DOJ’s 2024 ADA rule. Private-sector organizations fall under Title III of the ADA, where WCAG 2.1 Level AA is the accepted benchmark that courts and regulators apply.
If your organization falls under more than one category, aligning with the most demanding requirement that applies is usually the safest bet. In most cases, that’s WCAG 2.1 Level AA.
How Do I Become ADA, WCAG, and 508 Compliant?
The first step is to determine how accessible your existing content is. A free accessibility checker can help identify common accessibility issues, including:
Missing alt text: Images without alt text are inaccessible to users who rely on screen readers.
Low color contrast: Text that doesn’t meet color contrast thresholds is unreadable for users with visual impairments.
Keyboard navigation failures: Content must be fully operable without a mouse.
Improper heading structure: Screen readers rely on headings to convey content hierarchy.
Missing video captions: Captions are required for users who are deaf or hard of hearing or for those in noise-sensitive environments.
Inaccessible forms: Forms need labels and clear error messages to be usable by all.
Unclear link descriptions: “Click here” and “Read more” don’t provide enough context for screen reader users.
Fixing these issues removes some of the barriers that prevent users from completing basic tasks — and helps bring you closer to ADA and Section 508 compliance.
Maintain Compliance as Your Website Evolves
Meeting ADA, Section 508, and WCAG requirements isn’t a one-time process. New content, personalization, and feature updates mean your accessibility and compliance posture can shift without warning, making ongoing monitoring essential, not optional.
For organizations managing compliance across multiple standards, a layered approach is best: automated monitoring to catch and fix issues continuously, combined with expert auditing to assess your full compliance standing.
AudioEye combines both into one platform. Our automation detects more issues than any other tool on the market, applies fixes in real time, and is backed by certified experts who address the issues automation can’t reach. The result is up to 400% more legal protection than automation-only or consulting-only approaches.
Ready to get started? Get a free scan of your website or schedule a demo to see AudioEye in action.
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