The verdict in three sentences
Digital accessibility is no longer optional: WCAG 2.1 AA applies to a growing number of organisations, with a mandatory accessibility statement and risk of penalty. An audit typically reveals dozens of non-conformities that must be fixed within 2 to 4 months, for a compliance budget of 8 000 to 25 000 EUR. Built in from design, accessibility costs half as much as retrofitting and becomes a reputation and SEO advantage.
What compliance costs in 2026
2026 orders of magnitude for a medium-sized corporate website (30-60 pages).
| Service | Content | Timeline | Cost EUR |
|---|---|---|---|
| Initial WCAG audit | Success criteria, page sample | 2-3 wks | 3 000 - 8 000 |
| Remediation | HTML/CSS/JS and content fixes | 2-4 months | 8 000 - 25 000 |
| Accessibility statement | Drafting + multi-year plan | 1 wk | 800 - 2 000 |
| Control audit | Post-fix verification | 1-2 wks | 2 000 - 5 000 |
| Contributor training | CMS best practices | 1-2 days | 1 200 - 2 500 |
| Annual monitoring | Watch + minor fixes | ongoing | 3 000 - 6 000/yr |
Accessibility built in at design: 8 to 12 % premium on project budget. Retrofitted after delivery: 15 to 20 %, with risk of partial rebuild.
Key criteria and risk levels
The most frequent non-conformities and their impact on the compliance score.
| WCAG criterion | Example | Frequency | Severity |
|---|---|---|---|
| Colour contrast | Light grey text on white | Very frequent | High |
| Text alternatives | Images without alt attribute | Very frequent | High |
| Keyboard navigation | Menus not reachable | Frequent | High |
| Heading structure | Inconsistent Hn hierarchy | Frequent | Medium |
| Forms | Fields without associated label | Frequent | High |
| PDF documents | Untagged PDFs | Very frequent | Medium |
The compliance rate is measured across the success criteria: aim for an overall rate above 75 % for a credible statement, with full AA conformance as the regulatory goal.
Mini case study
Ms. Berger, general counsel of a services group in Manchester, receives a formal notice flagging the corporate site as inaccessible. An audit at 5 500 EUR reveals 34 non-conformities and a compliance rate of 48 %. Remediation, quoted at 17 000 EUR over 3 months, raises the rate to 92 %. Total cost, audit and control included, reaches 26 000 EUR. Set against the avoided penalty and reputational risk, plus the observed SEO gain (+14 % organic traffic in 6 months from better-structured HTML), the operation pays back in under a year.
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FAQ
Who is subject to the accessibility obligation?
Public bodies, large companies and a widening scope of private actors depending on revenue and sector. When in doubt, a corporate website is best off targeting WCAG 2.1 AA by default.
What penalties apply for non-compliance?
Beyond financial risk (administrative penalties) and litigation risk, reputational damage is immediate. The absence of an accessibility statement is itself sanctionable.
How long to become compliant?
Allow 2 to 4 months depending on site size and the number of non-conformities. A prior audit lets you plan and prioritise high-impact fixes.
Does accessibility improve SEO?
Yes: semantic HTML, clean heading structure, text alternatives and performance directly benefit SEO. A +10 to +15 % organic traffic uplift is commonly observed after remediation.
Do we rebuild the site or fix the existing one?
In most cases, you fix the existing site. A full rebuild is only justified if the technical base is too old to support fixes at a reasonable cost.
Let's scope your project. Send us the URL, site size and deadlines: we run the WCAG audit and quote AA remediation. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
