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Web accessibility (WCAG) audit for a B2B website: cost in London (2026)

Mohamed Bah·Fondateur, Kolonell
September 5, 2026
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Web accessibility (WCAG) audit for a B2B website: cost in London (2026)

Web accessibility (WCAG) audit for a B2B website: cost in London (2026)

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The verdict in three sentences

Since accessibility obligations expanded, a mid-cap with turnover above 50M EUR must bring its website into line with WCAG 2.1 level AA or face administrative sanctions. The audit costs 2,000 to 6,000 EUR and remediation 4,000 to 15,000 EUR depending on site size. Building accessibility in from the design phase rather than as a fix cuts the bill by 30 to 50% and mechanically improves SEO and user experience.

Who is concerned and what are the 2026 obligations

Accessibility is no longer reserved for the public sector. The European Accessibility Act and its national transpositions extend obligations to the private sector. Here is the 2026 landscape.

Organisation type2026 obligationPotential sanctionStatement required
Public sectorWCAG 2.1 AA mandatoryUp to 50,000 EURYes + multi-year plan
Mid-cap > 250 emp. / >50M EURWCAG 2.1 AA mandatoryUp to 50,000 EURYes
Consumer e-commerceWCAG 2.1 AA (EAA)Fine + withdrawalYes
SME < 50M EUR turnoverRecommended (not mandatory)None directNo
Bank / insuranceReinforced AAHighYes + annual audit

The accessibility statement and multi-year plan must be published on the site: their absence is the first thing checked during an inspection.

The cost of accessibility compliance in 2026

The budget depends heavily on when accessibility is addressed: upstream (design) or downstream (fixing an existing site).

ItemRemediation (existing site)From the design phase
WCAG 2.1 AA audit2,000 - 6,000 EURIncluded in scoping
Technical fixes4,000 - 15,000 EUR+10 to 20% of dev
Accessibility statement500 - 1,500 EURIncluded
Editorial team training800 - 2,500 EURIncluded
Annual control audit1,500 - 4,000 EUR/year1,500 - 4,000 EUR/year
First-year total8,800 - 29,000 EUR4,500 - 14,000 EUR

The gap is clear: anticipating accessibility nearly halves the cost, because there is no code rework or rebuilding of non-accessible components.

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Mini case study

Catherine, general secretary of a 410-employee services mid-cap in London (turnover 68M EUR), discovers she now falls under accessibility obligations. Her 40-page institutional site undergoes an audit (4,500 EUR) revealing a 42% compliance rate. Remediation costs 11,000 EUR and takes 6 weeks. Unexpected bonus: organic traffic rises 18% in 4 months thanks to semantic structure and performance improvements. The 15,500 EUR investment partly turns into measurable SEO leverage.

FAQ

Is my company really obligated? If you exceed 250 employees and 50M EUR turnover, or operate in a regulated sector (banking, consumer e-commerce), yes. Below that it is strongly recommended but not directly sanctionable in 2026.

What exactly is WCAG 2.1 AA? It is the international accessibility standard covering contrast, keyboard navigation, text alternatives, structure and screen-reader compatibility. Level AA is the legal reference and includes dozens of testable criteria.

Does accessibility improve SEO? Yes, strongly. Semantic structure, alt text, heading hierarchy and performance are criteria shared by accessibility and search ranking. An accessible site is almost always better indexed.

How long does remediation take? Allow 4 to 10 weeks depending on site size. A 10-page brochure site is fixed in 3 weeks; a 50-page institutional site needs 8 to 10 weeks.

Is the accessibility statement mandatory? Yes for subject organisations. It must state the compliance rate, non-accessible content and a contact. Its absence is the easiest non-compliance to establish during an inspection.

Let's scope your project. WCAG 2.1 AA audit and remediation for a B2B site, indicative budget 6,000 to 20,000 EUR depending on the number of pages. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.

Tags:#accessibilite#RGAA#WCAG#conformite#Bordeaux#audit accessibilite
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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.