ADA web accessibility requirements obligate most businesses, state and local governments, federal agencies, and federally funded organizations to make their websites usable by people with disabilities, and the technical yardstick nearly every court and federal agency uses is the Web Content Accessibility Guidelines (WCAG), Level AA. Nearly 4,000 web accessibility lawsuits were filed in federal court in 2025. If your site is covered and it fails that standard, a plaintiff has a clear framework to argue you’ve broken the law.
Who Has to Comply
Three federal laws create the obligation, and between them they pull in almost every organization that runs a public-facing website.
Title III of the ADA covers private businesses and nonprofits that serve the public: restaurants, hotels, retail stores, healthcare providers, theaters, gyms, private schools, and the online versions of all of them.1ADA.gov. Introduction to the Americans with Disabilities Act The statute was written with physical locations in mind, but the Department of Justice has consistently taken the position that websites offering goods or services to the public fall under the same rules, and courts have broadly agreed. Most e-commerce sites, service platforms, and business websites are covered.
Title II of the ADA covers state and local government entities. A 2024 DOJ rule formally requires those governments to bring their web content and mobile apps up to WCAG 2.1 Level AA, with deadlines set by population size.2ADA.gov. Fact Sheet: New Rule on the Accessibility of Web Content and Mobile Apps Provided by State and Local Governments
Section 508 of the Rehabilitation Act requires federal agencies to make the electronic and information technology they develop, procure, and maintain accessible to employees and members of the public with disabilities.3Section508.gov. Section 508 of the Rehabilitation Act, as Amended Section 504 of the same act extends accessibility obligations to any program or organization receiving federal funding, which sweeps in universities, hospitals, and nonprofits that might not otherwise think of themselves as covered.
The Standard: WCAG 2.1 Level AA
The Web Content Accessibility Guidelines, published by the World Wide Web Consortium, are the technical rulebook. WCAG organizes its requirements into three conformance levels: A (the minimum), AA (the level courts and agencies generally expect), and AAA (the most stringent, typically relevant to specialized educational or government content).4World Wide Web Consortium. Web Content Accessibility Guidelines (WCAG) 2.1 Each higher level includes everything below it, so meeting Level AA means also meeting every Level A criterion.
The DOJ’s 2024 Title II rule names WCAG 2.1 Level AA as the required standard for state and local governments.2ADA.gov. Fact Sheet: New Rule on the Accessibility of Web Content and Mobile Apps Provided by State and Local Governments No equivalent rule names a specific WCAG version for private businesses, but courts routinely use WCAG 2.1 Level AA in Title III lawsuits anyway. If your site meets that standard, you have strong footing. If it doesn’t, plaintiffs have an off-the-shelf framework to argue you’ve fallen short.
What About WCAG 2.2?
WCAG 2.2 became a formal W3C Recommendation on October 5, 2023, and is now the current version.5World Wide Web Consortium. What’s New in WCAG 2.2 It adds nine new success criteria on top of 2.1, including requirements that keyboard focus not be hidden behind sticky headers or cookie banners, that drag-based interactions have a simple click alternative, that clickable targets measure at least 24 by 24 CSS pixels, and that logins not force users to memorize passwords or solve puzzles without an alternative.
The DOJ rule still points at 2.1, not 2.2, so governments are not yet legally required to meet the newer criteria. But WCAG 2.2 is backward-compatible with 2.1, so building to the newer standard satisfies both. For private businesses deciding where to aim, 2.2 Level AA is the safer long-term target, since courts tend to move toward the most current recognized standard over time.
Government Deadlines
The DOJ originally set compliance deadlines in its April 2024 Title II rule, but an Interim Final Rule published on April 20, 2026, extended those deadlines by one year each:6Federal Register. Extension of Compliance Dates for Nondiscrimination on the Basis of Disability; Accessibility of Web Information and Services of State and Local Government Entities
- Governments serving a population of 50,000 or more must comply by April 26, 2027.
- Governments serving under 50,000, and any special district government, must comply by April 26, 2028.
The rule applies to all web content and mobile apps a government entity provides, directly or through a contractor. Certain categories are exempt: archived content not currently used for services, most preexisting electronic documents (unless needed to apply for or access programs), content posted by unaffiliated third parties, password-protected documents about specific individuals, and social media posts published before the entity’s compliance date.7Federal Register. Nondiscrimination on the Basis of Disability; Accessibility of Web Information and Services of State and Local Government Entities
Private businesses have no formal compliance deadline because no regulation names a specific WCAG version for them. Don’t read that as a grace period. Lawsuits can be filed at any time, and courts evaluate whether the site was accessible when the plaintiff encountered the barrier.
Where Sites Actually Fail
Accessibility is not one feature you switch on. It is a set of design and coding practices, and most compliance failures cluster in a handful of areas.
Text Alternatives and Captions
Every image, chart, icon, and diagram needs a text description (commonly called “alt text”) that conveys its meaning to a screen reader. Purely decorative images should be marked so screen readers skip them. Video needs synchronized captions; audio-only content like podcasts needs transcripts. Missing alt text and absent captions are among the most frequently cited issues in accessibility lawsuits.
Keyboard Navigation
Many users with motor or visual impairments navigate entirely with a keyboard, using Tab to move between elements, Enter to activate buttons, and arrow keys to scroll or select within menus. Every interactive element on the site (dropdown menus, form fields, modals, custom widgets) must be reachable and operable without a mouse. A visible focus indicator, the outline showing which element is currently selected, is essential so keyboard users can track where they are.
Screen Reader Compatibility
Screen readers interpret the page’s underlying HTML to announce content in a logical order. Proper heading levels (H1 through H6), descriptive link text rather than “click here,” and semantic HTML elements like navigation landmarks let the software convey the page’s structure. When developers use generic containers for everything and rely on visual styling alone, the page looks correct but sounds like nonsense.
Color Contrast and Visual Design
WCAG Level AA requires a minimum contrast ratio of 4.5:1 between normal text and its background, and 3:1 for large text. Information cannot be communicated through color alone, because users who are colorblind may not distinguish red-highlighted errors from green-highlighted successes. Form fields need labels that stay visible (not just placeholder text that vanishes when you start typing), and error messages need to clearly identify which field has the problem.
Third-Party Content Doesn’t Shift the Liability
A common misconception is that embedding someone else’s widget, plugin, or video player pushes the accessibility responsibility to the vendor. It does not. If an inaccessible chat tool, booking engine, or payment processor appears on your site, your organization carries the legal exposure. The DOJ’s Title II rule states this outright for government entities: web content provided through contractual or licensing arrangements must also meet WCAG 2.1 Level AA.7Federal Register. Nondiscrimination on the Basis of Disability; Accessibility of Web Information and Services of State and Local Government Entities Private businesses under Title III face the same principle: the visitor’s experience on your domain is your responsibility regardless of who wrote the code.
Accessibility Overlays Are Not a Fix
Overlay products are third-party tools that promise instant compliance by adding a toolbar or JavaScript widget on top of your existing site. Courts have not accepted the presence of an overlay as proof of compliance. Lawsuits have proceeded against businesses using overlay tools, and plaintiff attorneys have argued that buying an overlay demonstrates awareness of accessibility problems without actually fixing them.
The underlying issue is that WCAG conformance requires changes to your site’s code and structure. An overlay sitting on top of broken HTML cannot reliably fix missing form labels, illogical heading structures, or inaccessible custom widgets in a way that works across different assistive technologies. Some users with disabilities have reported that overlays interfere with their existing screen reader settings. An overlay can supplement a real remediation plan; it cannot replace one.
What Happens If Your Site Isn’t Compliant
The legal exposure runs through two separate channels, and the available remedies differ sharply between them.
Private Lawsuits
Any individual who encounters an accessibility barrier can sue under Title III. Private plaintiffs can obtain injunctive relief (a court order requiring you to fix the site) plus attorney’s fees.8ADA.gov. Americans with Disabilities Act Title III Regulations What private plaintiffs cannot recover under Title III is monetary damages or civil penalties. This distinction matters: you won’t face a damage award in a private suit, but the fees alone are usually the most expensive part. The ADA’s fee-shifting provision allows the prevailing party to recover reasonable attorney’s fees and litigation expenses from the losing side.9Office of the Law Revision Counsel. 42 USC 12205 – Attorneys Fees In practice you may pay both the plaintiff’s lawyers and your own, plus the cost of remediating the site on a court-ordered timeline.
DOJ Enforcement
When the Department of Justice brings a case, the stakes climb. A court can order injunctive relief, award compensatory damages to affected individuals, and assess civil penalties. The statutory base amounts are up to $50,000 for a first violation and up to $100,000 for any subsequent violation.10Office of the Law Revision Counsel. 42 USC 12188 – Enforcement Those base figures are adjusted upward for inflation each year under the Federal Civil Penalties Inflation Adjustment Act, so the actual 2026 numbers are higher. DOJ actions also frequently produce consent decrees with detailed compliance requirements and ongoing federal monitoring.
When a Demand Letter Arrives
Many claims start with a demand letter from a plaintiff’s attorney, not a filed lawsuit. Ignoring the letter rarely makes it go away and often accelerates litigation. Engage counsel immediately, start an internal accessibility review while the letter is under evaluation, and communicate with the plaintiff’s firm only through your attorney. If the firm offers to serve as your accessibility consultant, decline and hire an independent vendor instead. Review your contracts with hosting providers and third-party platform vendors as well, since those agreements may allocate some responsibility for accessibility compliance.
The Two Recognized Defenses
The ADA does not demand accessibility at any cost. Two defenses can excuse full compliance, though both are narrow and fact-intensive.
Undue burden means that making the site accessible would impose significant difficulty or expense on the organization. Courts weigh the cost against the organization’s overall financial resources, employee count, nature of operations, and its relationship to any parent entity.11ADA.gov. ADA Title III Technical Assistance Manual A three-person nonprofit with a $50,000 budget has a different threshold than a Fortune 500 company. The defense requires documented evidence of the burden, not just an assertion that compliance is expensive.
Fundamental alteration applies when making content accessible would change the essential nature of the service. In practice this defense almost never succeeds for standard websites, because adding alt text, fixing heading structures, and ensuring keyboard access don’t change what the site does. It matters mostly in narrow cases involving highly specialized interactive content where the accessibility modification would eliminate the core functionality.
Even when one of these defenses applies, the obligation does not simply disappear. The organization must still provide access through an alternative method to the maximum extent possible,11ADA.gov. ADA Title III Technical Assistance Manual which might mean a phone-based alternative, content in a different format, or accessible versions of the most critical pages while the rest of the site is worked on.
Tax Credits and Deductions That Offset the Cost
Two federal tax provisions help offset accessibility spending.
The Disabled Access Credit under Section 44 of the Internal Revenue Code gives eligible small businesses a credit equal to 50 percent of accessibility expenditures that exceed $250 but do not exceed $10,250 in a year, for a maximum annual credit of $5,000. To qualify, the business must have had gross receipts of $1 million or less, or no more than 30 full-time employees, in the preceding tax year.12Office of the Law Revision Counsel. 26 USC 44 – Expenditures to Provide Access to Disabled Individuals The credit is elective, so you have to claim it on your return.
The Barrier Removal Deduction under Section 190 lets any business, regardless of size, deduct up to $15,000 per year for expenses to remove architectural and transportation barriers to make a facility more accessible.13Office of the Law Revision Counsel. 26 USC 190 – Expenditures to Remove Architectural and Transportation Barriers to the Handicapped and Elderly The statute was written with physical barriers in mind, but the IRS has permitted its use for certain digital accessibility expenditures tied to a business facility’s technology infrastructure.
A qualifying small business can use both together: the Section 44 credit on the first $10,250 of eligible spending above the $250 floor, and the Section 190 deduction on additional expenses up to $15,000. For a business investing in a full remediation, the combined benefit meaningfully reduces the net cost.