Overview
Short answer: yes, treat it as required. The longer answer involves a statute written in 1990, a patchwork of court decisions, and a de facto standard that fills the gap. This page gives you the practical picture without the law-review detour.
What the law actually says
ADA Title III requires “places of public accommodation” to be accessible to people with disabilities. The statute lists physical places like stores, restaurants, and theaters, because it predates the commercial web.
Courts have spent two decades applying it to websites. Some federal circuits say any business website open to the public qualifies. Others require a “nexus” to a physical location. No circuit says online stores are simply exempt, and the Department of Justice has repeatedly stated that the ADA covers web content of public-facing businesses.
The practical consequence: plaintiffs file in friendly circuits, and essentially every US online store can be reached by someone. The edge cases are covered in who is exempt from ADA compliance.
The standard you are measured against
The ADA names no technical standard for websites. In practice, everyone uses WCAG 2.1 AA, the Web Content Accessibility Guidelines. Courts reference it, the DOJ references it, and settlement agreements almost universally require it. The DOJ’s 2024 rule for state and local governments formally adopted WCAG 2.1 AA, which further cemented it as the benchmark private businesses are compared against.
What the standard contains, translated for store owners, is in WCAG 2.1 for Shopify: the practical guide. The version question, 2.1 versus the newer 2.2, is answered in WCAG 2.2 vs 2.1.
How enforcement actually works
There is no ADA inspector and no agency that reviews websites. Enforcement is private lawsuits: a person who could not use your store sues, their lawyer collects fees, and your store commits to fixing the problems as part of the settlement. That mechanism produced 3,117 federal cases in 2025, and it is why “is it required?” and “will I get sued?” are effectively the same question.
This structure explains a lot of confusion. Owners look for a government checklist or a certification and find none, then conclude the requirement must not be real. The requirement is real. It just arrives as a demand letter instead of an inspection notice.
Example
A Vermont-based store with no physical shop sells nationwide. A New York plaintiff who uses a screen reader cannot complete checkout and files in the Southern District of New York, where courts accept web-only claims. The store’s “we have no physical location” argument does not end the case. Its lawyer explains that winning that argument would cost more than settling. It settles, like most cases do. The arithmetic is in settlement amounts.
What this means for your priorities
Treat WCAG 2.1 AA as a requirement with lawsuit-shaped enforcement, then act in risk order. The purchase path matters most, because a blocked checkout is the strongest fact a plaintiff can plead. The working sequence is in how to make your Shopify store ADA compliant, and most stores fail the same dozen issues, which makes the work smaller than it sounds.
Common mistake
Waiting for a federal regulation before acting. Congress has not passed a website accessibility statute for private businesses, and one is not coming soon. The enforcement mechanism is lawsuits, it is fully operational today, and the standard it applies is already knowable. Start with the self-check this week rather than a regulation that may never arrive.