What the ADA expects from businesses open to the public online, and why there is no detailed technical standard for them.
Title III covers businesses open to the public, such as retailers, banks, hotels, medical offices, restaurants and theaters. The Department of Justice says the ADA's requirements apply to all the goods, services, privileges and activities these businesses offer, including online.
Unlike Title II, there is no DOJ regulation that sets a detailed technical standard for the websites of businesses.
DOJ's 2022 guidance states that the Department does not have a regulation setting out detailed standards. Businesses have flexibility in how they comply with the ADA's general requirements, but they must still meet them.
The guidance points to existing technical standards, including WCAG and the Section 508 Standards, as helpful guidance on how to make website features accessible. It treats them as references, not as mandatory technical requirements. The guidance is informal technical assistance and is not binding.
The regulation for public accommodations, 28 CFR 36.303, requires appropriate auxiliary aids and services where necessary to ensure effective communication. Aids must be accessible, timely, and protect the privacy and independence of the person. Accessible electronic and information technology is listed there as an example of an auxiliary aid.
The regulation says the ultimate decision on which measure to take rests with the business if the method chosen is effective.
Because WCAG is a widely used reference, many businesses use WCAG 2.1 Level AA as the target for their sites. Check with a lawyer how that applies to your situation, because there is no single rule for private businesses.
DOJ lists common barriers. See common web barriers.