If you've ever asked "what is the difference between Section 508 and ADA?" — you're not alone. Many people confuse these two important US accessibility laws. Section 508 applies to federal agencies and contractors, while the ADA (Americans with Disabilities Act) applies to public accommodations and private businesses. Both require digital accessibility, but they have different scopes, enforcement, and technical standards.

This comprehensive guide compares Section 508 vs ADA — explaining who must comply, what's required, and how both laws affect your website.

Section 508 vs ADA — At a Glance

What is Section 508?

Section 508 is a law that requires federal agencies and their contractors to make their information and communication technology (ICT) accessible to people with disabilities. It was enacted in 1998 as an amendment to the Rehabilitation Act of 1973.

Key features of Section 508:

• Applies to: All US federal agencies and their contractors
• Technical standard: WCAG 2.0 Level AA (508 Refresh, 2018)
• Covers: Websites, software, hardware, documents, multimedia
• Enforcement: Federal government oversight, funding cuts
• Documentation: VPATs (Voluntary Product Accessibility Templates) required

What is the ADA (Title III)?

The ADA (Americans with Disabilities Act) is a US civil rights law enacted in 1990. Title III of the ADA prohibits discrimination in "places of public accommodation" — which includes private businesses like restaurants, hotels, retail stores, banks, and — as courts have ruled — websites.

Key features of ADA Title III:

• Applies to: Public accommodations (private businesses)
• Technical standard: WCAG 2.1 Level AA (de facto standard)
• Covers: Websites, mobile apps, physical spaces
• Enforcement: Private lawsuits, DOJ enforcement
• Penalties: Fines up to $75,000 (first violation), $150,000 (repeat)

Key Differences — Section 508 vs ADA

1. Who Must Comply?

• Section 508: Federal agencies + federal contractors
• ADA: All public accommodations (private businesses, e-commerce, restaurants, hotels, banks, etc.)

2. Technical Standard

• Section 508: WCAG 2.0 Level AA (officially), WCAG 2.1 Level AA (recommended)
• ADA: WCAG 2.1 Level AA (de facto standard, referenced by DOJ)

3. Scope

• Section 508: All ICT — websites, software, hardware, documents
• ADA: Websites, mobile apps, and physical spaces

4. Enforcement

• Section 508: Government oversight, funding cuts, procurement bans
• ADA: Private lawsuits (5,100+ in 2025), DOJ enforcement

5. Penalties

• Section 508: Loss of federal funding, procurement bans
• ADA: Fines up to $75,000 (first), $150,000 (repeat) + legal fees

Do You Need to Comply with Both?

If you are a federal contractor or vendor, you may need to comply with both:

• Section 508 applies to your federal contracts
• ADA Title III applies to your public-facing websites

If you are a private business (restaurant, hotel, e-commerce store, bank, etc.), you are not subject to Section 508 — but you must comply with ADA Title III.

How to Check Compliance for Both Laws

Both Section 508 and ADA require websites to be accessible. The good news is that both laws reference WCAG as the technical standard. By making your website WCAG 2.1 Level AA compliant, you meet both standards.

Step 1: Use a Free WCAG Compliance Checker

Visit AccessiTool's free ADA compliance checker and enter your website URL. The tool scans against WCAG 2.1 Level AA standards and provides 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 the most critical violations: missing alt text, low color contrast, keyboard accessibility issues, and missing form labels.

Step 4: Document and Maintain

If you're a federal contractor, you'll need to provide VPAT (Voluntary Product Accessibility Template) documentation. For ADA compliance, keep records of your scans and fixes for legal protection.

Frequently Asked Questions — Section 508 vs ADA

Internal Links — Section 508 & ADA Resources