Compliance Checklist
ADA Website Accessibility Checklist — WCAG 2.1 AA (2026)
PERCEIVABLE
OPERABLE
UNDERSTANDABLE
ROBUST
WCAG 2.2 Additions (October 2023)
Testing & Process
What is ADA website compliance?
The Americans with Disabilities Act (ADA) of 1990 prohibits discrimination against people with disabilities in places of public accommodation. Since the mid-2010s, US federal courts have consistently ruled that commercial websites are "places of public accommodation" under Title III. In 2024, the U.S. Department of Justice issued a final rule under Title II explicitly requiring state and local government websites to meet WCAG 2.1 Level AA, cementing this standard as the benchmark for accessibility compliance across both public and private sectors.
Any business with a public-facing website can face ADA accessibility lawsuits. The number of federal ADA website lawsuits has grown every year, exceeding 4,000 in 2023. Retail, hospitality, financial services, and healthcare are the most targeted industries, but no sector is exempt. Fines for first violations can reach $75,000, with subsequent violations up to $150,000. Beyond regulatory fines, class action litigation settlements regularly reach into the millions.
WCAG 2.1 vs WCAG 2.2 — what's the difference?
WCAG (Web Content Accessibility Guidelines) is published by the W3C's Web Accessibility Initiative (WAI). WCAG 2.1 (published June 2018) added 17 success criteria to WCAG 2.0, with particular focus on mobile accessibility and cognitive disabilities. It remains the current legal standard in most US, EU, and international jurisdictions. WCAG 2.2 (published October 2023) adds 9 new criteria, removing the problematic 4.1.1 Parsing criterion (which automated tools commonly flagged) and adding new criteria for focus appearance, dragging movements, and accessible authentication. WCAG 2.2 is backwards compatible — meeting WCAG 2.2 AA means you also meet WCAG 2.1 AA.
The four WCAG principles — Perceivable, Operable, Understandable, Robust (POUR) — provide a memorable framework for understanding accessibility requirements. Each success criterion is assigned a level: A (minimum), AA (standard compliance target), or AAA (enhanced). ADA compliance is measured against Level AA across all four principles.
How to test for and fix accessibility issues
No single method catches all accessibility issues. Use a layered testing approach: automated tools (Google Lighthouse, axe DevTools, WAVE) identify approximately 30–40% of WCAG issues quickly and at no cost. Manual keyboard-only navigation testing catches interactive element issues that automated tools miss. Screen reader testing with NVDA (Windows, free), JAWS (Windows), or VoiceOver (macOS/iOS, built-in) verifies that users with visual impairments can navigate and understand your content.
This checklist covers all WCAG 2.1 AA success criteria plus the WCAG 2.2 additions, organized by the POUR principles. Each item links to the official W3C "Understanding" document for that criterion, which explains the intent and provides implementation techniques. If you also collect personal data from users, consider reviewing the GDPR checklist (EU users) or the CCPA checklist (California users). Download the PDF to document your accessibility audit for legal counsel or to share with your development team.