What is the ADA? A Complete Overview of the Americans with Disabilities Act

If you've ever asked "what is the ADA?" — you're not alone. The Americans with Disabilities Act (ADA) is one of the most important civil rights laws in US history. Signed into law in 1990, it prohibits discrimination against individuals with disabilities and ensures equal access to employment, public services, public accommodations, and telecommunications.

This comprehensive guide covers everything you need to know about the ADA — from its history and purpose to how it applies to websites and businesses in 2026.

What is the Americans with Disabilities Act (ADA)?

The Americans with Disabilities Act (ADA) is a US federal law that protects people with disabilities from discrimination. It is often described as the "Emancipation Proclamation" for people with disabilities because it fundamentally changed how society views and treats individuals with disabilities.

The ADA is divided into five titles (or sections), each covering a different area of public life:

Title I — Employment

Prohibits discrimination against qualified individuals with disabilities in all aspects of employment, including hiring, firing, promotion, pay, and training. Applies to employers with 15 or more employees.

Title II — Public Services

Prohibits discrimination by state and local governments. Requires all government services, programs, and activities to be accessible to people with disabilities. This includes public schools, courts, and public transportation.

Title III — Public Accommodations

Prohibits discrimination by private businesses that serve the public. This includes restaurants, hotels, retail stores, theaters, banks, and — as courts have ruled — websites.

Title IV — Telecommunications

Requires telephone and internet services to be accessible to people with hearing and speech disabilities. This includes relay services and captioning.

Title V — Miscellaneous

Contains provisions related to insurance, attorney fees, and retaliation against individuals who assert their rights under the ADA.

History of the ADA — When Was It Passed?

The ADA was signed into law on July 26, 1990 by President George H.W. Bush. The journey to its passage was long and hard-fought, driven by the disability rights movement and years of advocacy.

Key Milestones in ADA History:

• 1986: The National Council on Disability recommended the enactment of a comprehensive disability rights law.
• 1988: The ADA bill was introduced in Congress.
• 1990: The ADA passed with strong bipartisan support and was signed into law on July 26, 1990.
• 2008: The ADA Amendments Act (ADAAA) expanded the definition of "disability" to provide broader protection.
• 2010: The Department of Justice issued regulations requiring public accommodations to make websites accessible.

ADA and Websites — Why It Matters in 2026

In recent years, US federal courts have consistently ruled that websites are places of public accommodation under ADA Title III. This means that if you have a business website, it must be accessible to people with disabilities.

Over 5,100 ADA website lawsuits were filed in 2025 — a 37% increase from 2024. The majority of these lawsuits target e-commerce websites, restaurants, and financial institutions.

Who Must Comply with ADA Title III?

• ✅ E-commerce websites and online stores
• ✅ Restaurants, hotels, and retail stores
• ✅ Banks and financial institutions
• ✅ Healthcare providers and hospitals
• ✅ Law firms and professional services
• ✅ Sole proprietorships with public-facing websites

ADA Compliance — What It Means for Your Website

ADA compliance for websites means making your site accessible to people with disabilities, including those who are blind, have low vision, are deaf, have motor impairments, or experience cognitive disabilities.

The technical standard for ADA compliance is the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA. These guidelines provide specific, testable criteria for making web content accessible.

ADA Compliance Checklist — Quick Reference

• ✅ All images have descriptive alt text (WCAG 1.1.1)
• ✅ Color contrast ratio of 4.5:1 for normal text (WCAG 1.4.3)
• ✅ All functionality works with keyboard only (WCAG 2.1.1)
• ✅ Visible focus indicators (WCAG 2.4.7)
• ✅ Proper heading hierarchy (H1 → H2 → H3) (WCAG 1.3.1)
• ✅ Form labels for all input fields (WCAG 3.3.2)
• ✅ HTML language attribute set (WCAG 3.1.1)

ADA vs WCAG — What's the Difference?

Many people confuse ADA and WCAG. Here's the difference:

• ADA is a law that prohibits discrimination against people with disabilities. It applies to all areas of public life, including websites.
• WCAG is a technical standard that defines how to make websites accessible. It provides specific guidelines and success criteria.

Put simply: ADA is the law, WCAG is the standard. To comply with the ADA, your website must follow WCAG 2.1 Level AA guidelines.

How to Check If Your Website Is ADA Compliant

Step 1: Use a Free ADA Compliance Checker

Visit AccessiTool's free ADA compliance checker and enter your website URL. Get a detailed report in 60 seconds.

Step 2: Review Your Compliance Report

You'll receive a compliance score (0-100%), a list of violations, warnings, and passed checks — plus specific fix recommendations.

Step 3: Fix Critical Issues First

Start with missing alt text, low color contrast, keyboard accessibility, and form labels — these are the most common violations.

Step 4: Retest and Document

After making fixes, run another scan and save your PDF report for legal documentation.

Frequently Asked Questions — What is the ADA?

Internal Links — ADA Resources