The Americans with Disabilities Act (ADA) was enacted in 1990, long before the modern web. But through a series of court decisions, the Department of Justice (DOJ) guidance, and regulatory action, it is now firmly established that ADA accessibility obligations extend to websites — particularly for businesses that operate physical locations alongside their web presence, and increasingly for online-only businesses as well.
How the ADA applies to websites
Title III of the ADA prohibits discrimination by "places of public accommodation" — businesses that serve the public. Courts have split on whether a website alone constitutes a place of public accommodation, but the dominant judicial position, particularly in the 9th and 11th Circuits, is that websites connected to a physical business must be accessible. DOJ rulemaking finalised in 2024 went further, establishing that web content must conform to WCAG 2.1 Level AA for state and local governments, and signalling that private businesses serving the public face similar expectations.
In practice, ADA website accessibility litigation against private businesses has surged. Law firms in California, New York, and Florida have filed thousands of demand letters and lawsuits against businesses whose websites are not accessible to users with visual, auditory, motor, or cognitive disabilities. While many of these cases are opportunistic, the underlying legal principle — that your website must be usable by people with disabilities — is well-established and strengthening.
What WCAG 2.1 AA requires
WCAG (Web Content Accessibility Guidelines) 2.1 Level AA is the de facto standard for US website accessibility compliance. It is organised around four principles — Perceivable, Operable, Understandable, and Robust (POUR) — and contains 50 success criteria at the AA level. Practically, meeting WCAG 2.1 AA means:
- All images have descriptive alternative text
- Videos have captions and audio descriptions
- The website is fully keyboard-navigable without a mouse
- Colour contrast ratios meet minimum standards (4.5:1 for normal text)
- Form inputs are properly labelled
- Error messages are clear and specific
- The site works with common screen readers (NVDA, JAWS, VoiceOver)
- Interactive elements have visible focus indicators
- PDFs and downloadable documents are tagged for accessibility
How to reduce your ADA exposure
The most effective steps you can take are: conduct an accessibility audit using both automated tools (Axe, WAVE, Lighthouse) and manual testing with a screen reader; fix identified issues in priority order, starting with the most severe barriers; publish an accessibility statement on your website describing your conformance level and providing a contact method for users who encounter barriers; and respond promptly to any accessibility complaints, treating them as an opportunity to improve rather than a legal threat to escalate.
Accessibility overlays and widgets that claim to automatically fix accessibility issues are not a reliable defence. Courts have rejected overlay-based defences in ADA litigation, and disabled users consistently report that overlays do not solve the underlying problems. Genuine code-level remediation is the only approach that holds up to scrutiny.