The Business Case for Accessibility: ROI & Benefits

When organisations think about web accessibility, they often see it as a cost centre: something required for compliance but offering little return. That framing misses most of the picture. This post, first published in June 2025, was updated in October 2026; every figure below links to its source or comes from Certvo's own published scan data.

The Audience

The World Health Organization estimates that 1.3 billion people, about 16% of the global population, experience significant disability, and that the number is growing as populations age (WHO fact sheet). A site those users cannot operate loses them at the first barrier: an unlabelled form field, a button with no name, a checkout that cannot be reached by keyboard.

How Much Work Most Sites Have Left

The Certvo Web Accessibility Report 2026 scanned 1,569 websites. The headline numbers:

• Only 18.7% passed every automated WCAG 2.1 AA check.
• 51.4% had at least one critical issue.
• Sites averaged 69.2 issues each, and the average score was 66.0 out of 100.

For a business this is an opportunity as much as a risk: when most competitors fail basic checks, an accessible checkout or sign-up flow is a real difference for the customers who need it.

SEO Overlap

Accessibility and search optimisation share many of the same practices:

• Alt text: describes images for screen readers and gives search engines text to understand them by.
• Semantic HTML: proper headings, lists and landmarks structure content for both assistive technology and crawlers.
• Page titles and link text: descriptive titles and link names help users and search engines alike.
• Captions and transcripts: turn audio and video into indexable text.

These are the same failures that top our data: content placed outside any landmark region (62.2% of sites), insufficient colour contrast (51.4% of sites), links without an accessible name (50.1% of sites).

Risk Mitigation

The cost of not being accessible is increasingly concrete:

• United States: ADA Title III claims over inaccessible websites are common; we break down settlements, legal fees and remediation in what an ADA web accessibility lawsuit really costs.
• European Union: since 28 June 2025 the European Accessibility Act lets national authorities fine non-compliant providers and, in some member states, withdraw a product or service from the market. Ranges by country are in EAA penalties by country.

Calculating ROI

Every site is different, so treat ROI as a comparison of three lines rather than a single number:

• Cost: an initial audit and remediation, sized by the number of distinct templates rather than pages, plus ongoing monitoring so new content stays accessible.
• Avoided cost: the legal exposure above, which matters most for consumer-facing services such as online stores (see accessibility for e-commerce).
• Upside: customers who can now complete tasks they could not before, and the search overlap described above.

Getting Started

The best approach is incremental. Start with an automated scan to find your biggest issues, fix the high-impact items first (contrast, labels, link and button names, keyboard access), then work toward full WCAG 2.1 AA conformance over time. Tools like certvo.com make this process fast and affordable.