Let’s be honest about something. Most people who build a website are not thinking about the law. They’re thinking about how the homepage looks, whether the checkout works, and how fast the thing loads. Accessibility law tends to show up later, usually in the form of a demand letter or a lawsuit, at which point it stops being an abstract concept and starts being a very real problem.
So here’s the guide I wish more business owners read before that letter arrives. No dense legal jargon, no scare tactics, just a clear picture of the laws that govern website accessibility, who they apply to, and why they should be on your radar.
First, What Does “Website Accessibility” Even Mean?
Strip away the legalese and it comes down to one idea: can everyone use your website, including people with disabilities?
That covers a lot of ground. Someone who is blind may navigate using a screen reader that reads the page aloud. Someone with limited mobility may rely on a keyboard instead of a mouse. Someone with low vision may need high color contrast or the ability to enlarge text. Someone who is deaf needs captions on your videos. When your site works for all of them, it’s accessible. When it doesn’t, you’ve built a digital storefront with a step at the front door.
The laws below exist to make sure that step gets removed.
Why Website Accessibility Laws Matter
It’s tempting to file accessibility under “nice to have” and move on. But these laws carry real weight for three very different reasons, and each one is enough to take them seriously on its own.
They’re legally binding. This isn’t a set of friendly suggestions. Accessibility requirements are backed by federal statutes, court rulings, and, in some cases, hard compliance deadlines. Ignore them and you’re exposed to demand letters, lawsuits, legal fees, and settlement costs that can dwarf what it would have cost to fix the site in the first place.
They affect your bottom line. Roughly one in four U.S. adults lives with some kind of disability. That’s a massive segment of potential customers, and an inaccessible site quietly turns them away before they ever reach your checkout. Accessibility isn’t just risk management; it’s revenue you’re leaving on the table.
They’re the right thing to do. Underneath the legal machinery is a simple principle: people with disabilities deserve equal access to the same goods, services, and information as everyone else. A website that locks people out isn’t just legally risky, it’s exclusionary, whether you intended it that way or not.
Put those three together and the picture is clear. Accessibility law sits at the intersection of legal obligation, business sense, and basic fairness, which is exactly why it’s worth understanding rather than avoiding.
The Big One: The Americans with Disabilities Act (ADA)
In the United States, the ADA is the centerpiece of accessibility law. It was written in 1990, long before anyone was buying groceries online, but courts have consistently applied it to websites anyway. Federal and state courts consistently rule that the ADA and related state statutes apply to websites, and litigation remains widespread, with thousands of digital accessibility lawsuits filed each year.
The ADA splits into two parts that matter here:
Title II covers state and local governments. This is where the clearest rule currently lives. Under an April 2024 rule from the Department of Justice, state and local government websites must conform to the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA to comply with ADA Title II. The deadlines are staggered by size: public entities serving 50,000 or more people must be conformant by April 24, 2026, with smaller entities required to comply by April 26, 2027.
Title III covers private businesses that serve the public, which is to say, most businesses. Here’s the twist that trips people up: there is no official technical standard written into the Title III regulations for websites. Experts expected the DOJ to eventually specify WCAG 2.1 AA as the required standard for public accommodations, but that rulemaking has not happened, and it isn’t expected in the current political environment. Even so, courts use WCAG 2.1 (and increasingly 2.2) Level AA as the de facto legal benchmark. In other words, the government hasn’t formally drawn the line for private businesses, but the courts have, and that’s the line plaintiffs measure you against.
WCAG: The Rulebook Everyone Points To
You’ve seen the acronym twice now, so let’s unpack it. WCAG stands for the Web Content Accessibility Guidelines, published by the World Wide Web Consortium (the group that sets web standards). It’s the technical playbook that nearly every accessibility law leans on.
WCAG sorts its requirements into three conformance levels. Level A covers the most basic requirements, Level AA sets more rigorous standards and is the level required for ADA compliance, and Level AAA is the most demanding and often impossible to meet across all content. When someone says a site needs to be “WCAG 2.1 AA compliant,” they mean it satisfies both the A and AA success criteria. There are 86 different success criteria in WCAG 2.1.
A newer version, WCAG 2.2, is already being referenced in litigation, and a bigger overhaul, WCAG 3.0, is in the works. But WCAG 3.0 remains in draft form with no release date set, so a finished version is likely still several years away. For now, WCAG 2.1 AA is the practical target.
Section 508: The Federal Government’s Own Rule
If you do business with the federal government, there’s another law in the mix. Section 508 of the Rehabilitation Act requires federal agencies and organizations receiving federal funding to make their electronic and information technology accessible. While the ADA applies to public entities and private businesses, Section 508 focuses specifically on federal departments, contractors, and federally funded programs. If you’re a vendor bidding on a government contract, this one lands on your desk directly.
State Laws Add Another Layer
Federal law isn’t the whole story. Several states have their own accessibility statutes that can raise your exposure, and California is the one everyone talks about.
California’s overlapping laws, including the ADA and the Unruh Civil Rights Act, create significant legal exposure for any business serving California residents online, regardless of where that business is based. The reach is the part to notice: you don’t have to be located in California to be sued under California law. If Californians can shop on your site, you’re potentially in scope. California has consistently ranked among the top states for web accessibility lawsuits. New York is another hotbed, and the trend is spreading. In 2025, observers noted a notable expansion of digital accessibility lawsuits beyond the traditional hotspots of New York, Florida, and California, signaling that no company with a public website is immune based on geography.
If You Sell Overseas, Look at the EAA
For businesses with international customers, the ground shifted recently. The European Union’s European Accessibility Act came online in June 2025, and it applies to a wide range of private-sector products and services, not just government sites. Canada’s Accessibility for Ontarians with Disabilities Act also imposes heavy penalties for noncompliant websites. If your customer base crosses borders, your compliance obligations do too.
The Cost of Getting It Wrong
Here’s the uncomfortable statistic. A 2026 analysis of the top one million homepages found that 95.9% did not comply with accessibility standards, averaging 56.1 WCAG failures each. That means the overwhelming majority of websites are, technically speaking, out of step with the law, which is exactly why demand letters and lawsuits have become such a booming business. In 2025, over 3,000 web accessibility lawsuits were filed in federal courts.
And the enforcement picture has a wrinkle worth understanding. The current administration has deprioritized enforcement of civil rights laws like the ADA, so heavy DOJ action against private businesses isn’t expected in the near term. That might sound like good news, but it isn’t really. The lack of federal enforcement tends to perpetuate and increase private litigation risk for businesses, because the real pressure has always come from private plaintiffs and their attorneys, not the government.
But litigation is only part of the reason to care. An accessible site reaches more customers, including the millions of people with disabilities who have money to spend and will simply leave a site they can’t use. Accessibility improvements like clear headings, alt text, and captions also tend to improve SEO, so search engines can read your content more easily. And there’s the plain human argument: excluding people isn’t a great look, intentional or not.
The Bottom Line
Website accessibility law can feel like a tangle of acronyms, but the through-line is simple. The ADA is the anchor, WCAG 2.1 AA is the standard courts hold you to, Section 508 covers federal work, and state and international laws stack on top depending on who you serve. Government sites now have hard federal deadlines; private businesses live under a standard the courts have set even though the regulators haven’t formalized it.
The smart move isn’t to panic and it isn’t to ignore it. It’s to treat accessibility as part of building a decent website, the same way you’d treat security or mobile responsiveness. Get an honest audit, work toward WCAG 2.1 AA, and fix the real barriers. That’s how you stay on the right side of the law and build something more people can actually use.
This article is general information, not legal advice. For guidance on your specific situation, talk to an attorney who handles digital accessibility.
