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Research

1 in 6 people, trillions in spending: the customers your checkout turns away

Published 9 July 2026

The business case for accessibility is not a moral appeal, it is a market you are already declining to serve. About 1 in 6 people worldwide, roughly 1.3 billion, live with a significant disability (WHO, 2023). The disability market, counting disabled people plus their friends and families, is widely estimated to control over $18 trillion in disposable income (W3C WAI). When your checkout fails a screen reader, that is the audience you are turning away, and most shops never notice it happening.

The instinct is to picture a small, separate group with special requirements. That picture is wrong on both counts. The group is enormous, and it shops online exactly like everyone else, using assistive technology that reads pages aloud or navigates by keyboard. When your site works, you never know they were there. When it does not, you never see them leave.

How big is the disabled customer market, really?

Start with the headcount. The World Health Organization puts it at 1.3 billion people, about 16% of the global population (WHO, 2023). That is larger than the entire population of most countries you sell into. It is not a rounding error, and it is not a niche.

Now attach money to it. The Return on Disability Group's widely-cited estimate, referenced in the W3C's own business case for digital accessibility, is that the global disability market controls more than $18 trillion in disposable income once you include the friends and family who shop and choose alongside disabled people (W3C WAI). In the UK specifically, the disabled households' spending power, often called the "Purple Pound," is estimated at around £274 billion (W3C WAI). Treat those as estimates rather than audited accounts, because that is what they are, but the order of magnitude is not in doubt. This is a large, wealthy, ordinary slice of your customers.

Why an inaccessible site loses this money silently

Size alone would matter. Behaviour makes it urgent. Among disabled online shoppers, 69% click away from sites they find hard to use (Click-Away Pound, 2019). They do not file a support ticket or email you a screenshot. They leave, and your analytics record it as an ordinary bounce. That is why the loss is invisible from the inside: it shows up as a slightly worse conversion rate, not as an accessibility problem.

It compounds, too. The same research found that 83% of shoppers with access needs limit their shopping to sites they already know are accessible (AbilityNet). So a broken checkout does not just cost today's order. It removes you from the shortlist for every future order, because these customers plan around sites that do not fail them. You are not losing a sale, you are losing a customer who will now route around you by default.

Add it up and the UK number alone is stark: retailers lose an estimated £17.1 billion a year by not meeting the online needs of disabled shoppers (AbilityNet). We unpack that figure and the psychology behind it in the click-away pound.

This is a revenue story, not a charity one

The part that surprises people most is that accessibility can win you customers on price-insensitive terms. 86% of disabled shoppers say they would pay more for a product on an accessible site than buy it cheaper on one that is harder to use (AbilityNet). Read that carefully. It means accessibility is not only a way to stop losing money, it is a genuine reason a large group of shoppers will choose you over a cheaper rival. Very few investments in your storefront can claim both.

There are second-order gains as well. Accessibility improvements tend to be usability improvements for everyone, and the same semantic structure that helps a screen reader helps a search crawler. But you do not need those knock-on benefits to justify the work. The direct market is already big enough.

The real audience is wider than the disability figure suggests

The 1 in 6 headline actually undersells your exposure, and it is worth understanding why. The verified figure counts people with a significant disability (WHO, 2023), but the way an inaccessible site fails is rarely that specific. A checkout that a keyboard cannot navigate also fails the person with a temporary broken wrist, the parent holding a baby in one arm, and the commuter on a jolting train. Low-contrast text that defeats a low-vision shopper also defeats anyone reading a phone in bright daylight. Accessibility barriers are not walls that only stop a fixed minority, they are friction that degrades the experience for a much larger group under the right conditions.

There is also the demographic direction of travel to consider. Vision, hearing, dexterity and memory all tend to decline with age, and your customer base is ageing along with everyone else's. The logic is simple: the people who need an accessible interface today are the visible edge of a market that keeps growing, and building for them is building for the version of every customer who is tired, distracted, injured, or simply older than they were last year. That is why we treat the WHO number as a floor, not a ceiling, on who benefits from the work.

Why do so many shops exclude this market by accident?

Here is the honest part: almost no shop excludes disabled customers on purpose. The barriers are invisible from the inside, because the people building and testing the site are usually not the ones navigating it with a screen reader or a keyboard alone. The code ships, it looks fine on the designer's monitor, and a sixth of the potential market quietly bounces.

The fix is not a change of heart, it is a change of test. And the reason it is so easy to miss is the same reason a clean automated scan can lull a team into false confidence: automated tools catch only about a third of the issues that matter. The problems that actually stop this market from buying, an unlabelled address field, a payment button a keyboard cannot reach, a reading order that turns your product page into noise, are exactly the ones a machine tends to miss. You find them by testing the way these customers browse.

Common questions

How many people have a disability that affects online shopping?

The WHO estimates 1.3 billion people, about 16% of the world or roughly 1 in 6, live with a significant disability (WHO, 2023). Not all of those affect web use, but a large share do, spanning vision, motor, and cognitive conditions.

How much is the disability market worth?

Widely-cited estimates referenced by the W3C put the global disability market's disposable income at over $18 trillion, and the UK's "Purple Pound" at around £274 billion (W3C WAI). These are estimates, but they establish that the market is large and affluent.

Is fixing accessibility actually worth it commercially?

The behavioural data says yes. 69% of disabled shoppers click away from hard-to-use sites, 83% stick to sites they know are accessible, and 86% would pay more to buy from an accessible site than a cheaper inaccessible one (Click-Away Pound, 2019; AbilityNet).

The way we help shops actually capture this market is practical. We start with an automated scan to clear the cheap, machine-detectable problems, then a human audits your real purchase journeys to WCAG-EM methodology, tests the checkout with the screen readers your customers use, ships the fixes as pull requests your developers can review and merge, and issues an EN 301 549 conformance statement at the end. You can see how that is scoped under our services.

See where your own shop stands. Our free scan runs the same automated checks a regulator's tester starts with, then a human goes through your site with a screen reader and emails you the findings, in plain language. If your shop passes, we say so.

Get a free scan

Sources

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