ADA Title III Explained: What It Means for Website Accessibility

Title III of the Americans with Disabilities Act prohibits discrimination on the basis of disability in places of public accommodation, covering private businesses that serve the public. Enacted as part of the original ADA in 1990, Title III predates the internet as a primary channel for commerce, yet it has become the most frequently litigated part of the ADA when it comes to website accessibility.

Title III matters for digital accessibility because courts have increasingly weighed whether “public accommodation” extends to a business’s website, even though the statute itself never mentions the word, though federal circuits remain split on the question. Unlike Title II, which now has a Department of Justice rule naming a specific technical standard for government websites, Title III has no equivalent codified rule for private businesses. That gap has made Title III both the most active area of website accessibility litigation and, in some ways, the least predictable for businesses trying to determine exactly what compliance requires.

Here’s what to know: who must comply, what the law requires for websites, which accessibility standards it references in practice, how it’s enforced, and how it connects to Title II and other laws.

Who Must Comply

Title III applies to private businesses that operate as places of public accommodation, a category that covers retail and e-commerce website accessibility, restaurant website accessibility, hotel and travel website accessibility, healthcare website accessibility, senior care website accessibility, law firm website accessibility, and real estate website accessibility, among a wide range of other businesses that serve the public. Privately operated education website accessibility obligations, along with nonprofit organizations that offer services to the public, are also generally covered.

Unlike ADA Title I, which applies based on employee count, Title III has no minimum size threshold. A small local business and a national e-commerce retailer can both be subject to Title III claims, which is part of why website accessibility compliance under this title matters across businesses of every size and industry.

Title III does not cover state and local government entities, which fall under Title II instead, or employment practices, which fall under Title I. Private clubs and religious organizations are among the few categories generally exempt from Title III.

What It Requires for Websites

Title III requires that places of public accommodation not discriminate against individuals with disabilities in the “full and equal enjoyment” of their goods and services. In the physical world, this has long meant ramps, accessible restrooms, and clear signage. Courts have extended this same principle to websites, reasoning that a business’s online storefront, booking system, or customer service portal is an extension of the goods and services it offers, and therefore must be equally usable by people with disabilities.

In practice, this means a business’s website should allow someone using a screen reader, keyboard-only navigation, or other assistive technology to browse products, complete purchases, book appointments, or access customer support without encountering barriers that a sighted, mouse-using visitor wouldn’t face. Common triggers for Title III website claims include missing alt text, keyboard traps, inaccessible forms, and videos without captions.

Which Technical Standard It References

Title III itself does not name a specific technical accessibility standard, and the DOJ has not issued a formal rule for private businesses the way it did for state and local governments under Title II in 2024. In the absence of a codified requirement, WCAG 2.1 Level AA has become the standard most consistently referenced in Title III demand letters, settlements, and consent decrees, largely because it’s the same standard the DOJ adopted for government websites and has cited informally in prior guidance.

This means Title III compliance operates more as a practical expectation than a fixed legal checklist. Businesses aiming to reduce litigation risk generally treat WCAG 2.1 or 2.2 Level AA as the benchmark to meet, even though no statute or regulation currently requires it by name for private businesses.

Enforcement and Compliance Risk

Title III is enforced primarily through private lawsuits, and website accessibility has been one of the most active categories of ADA litigation for several years. According to Seyfarth Shaw’s tracking of federal court filings, plaintiffs filed 2,794 website accessibility lawsuits in 2023, a 14 percent decrease from 2022’s 3,225 filings, and 2,452 in 2024, a further 13 percent decrease. Filings then rebounded sharply in 2025, reaching 3,117, a 27 percent increase, suggesting the earlier decline was a pause rather than a lasting trend. Filings are frequently concentrated in a small number of federal districts, and litigation has increasingly extended into industries like financial services and e-commerce, including alcohol retailers, as plaintiffs’ firms broaden their focus.

Many Title III cases begin with a demand letter rather than a filed lawsuit, giving a business the opportunity to remediate before litigation proceeds. Because there’s no codified technical standard, these cases often turn on whether a business made a good-faith, documented effort toward an accepted standard like WCAG 2.1 AA.

This article provides general information only and is not legal advice. Businesses facing a demand letter, complaint, or active litigation related to website accessibility should consult qualified legal counsel.

How This Relates to Other Laws

Title III is best understood alongside Title II, which imposes a similar but more codified obligation on state and local governments following the DOJ’s 2024 final rule. Because Title II now names WCAG 2.1 AA explicitly, it has become an informal reference point for Title III cases and settlements, even though Title III itself doesn’t require it by name. Businesses that are also federal contractors may additionally need to consider Section 508, and those receiving federal funding may fall under Section 504 as well.

FAQ

Does ADA Title III require a website to meet WCAG standards?

Title III does not name a specific technical standard, and no DOJ rule currently applies to private businesses the way one does for government websites under Title II. In practice, WCAG 2.1 or 2.2 Level AA is the standard most commonly used in settlements and referenced in demand letters, making it the most reliable benchmark for reducing litigation risk even though it isn’t legally mandated by name.

How many ADA Title III website accessibility lawsuits are filed each year?

According to Seyfarth Shaw’s tracking, plaintiffs filed 2,794 website accessibility lawsuits in federal court in 2023, down 14 percent from 3,225 filings in 2022. Filing volume has remained in the thousands annually in recent years, with litigation increasingly extending into industries such as financial services and e-commerce.

Does Title III apply to small businesses?

Yes. Unlike ADA Title I, which applies based on employee count, Title III has no minimum size threshold for public accommodations. A small local business can face the same type of website accessibility claim as a large national retailer, which is part of why litigation spans businesses of nearly every size.

What’s the difference between a Title III demand letter and a lawsuit?

A demand letter is typically sent before a lawsuit is filed and gives a business the opportunity to remediate accessibility issues without going to court. Many Title III cases begin this way, though if the business doesn’t respond or remediate, the matter can proceed to a filed federal lawsuit.