The financial implications of accessibility reshape customer acquisition economics. Accessibility improvements are likely to directly translate to conversion rate gains, expanded market reach, and measurable ROI.
Digital marketing teams and the people on them (read: me) obsess over 0.1% conversion rate improvements.
At the same time, many of us (read: not me) systematically exclude 26% of potential customers. Global digital advertising spend is hitting all-time highs while basic website accessibility barriers still block the over 70 million American adults who live with disabilities from completing purchases, signing up for services, or even navigating past the homepage.
An overlooked area in modern marketing funnels is companies optimizing landing page load times by milliseconds while ignoring color contrast ratios that make text invisible to users with visual impairments, or pouring millions into retargeting campaigns to recapture abandoned carts without realizing that many users abandon because they literally cannot complete the purchase flow.
For the purposes of this article, let’s set aside the fact that accessibility work is simply the right thing to do and makes products and sites better for the entire population. I’ll make the case that even just from a business and ROI standpoint, everyone should be making their digital presence accessible.
If you could take actions to potentially improve your conversions by 25%, why would you not?
Basic website barriers block 1 in 4 buyers
If your customer acquisition cost is $200 and you exclude 26% of potential buyers through accessibility barriers, you’re effectively paying $270 for each customer you could actually reach. Global digital advertising spending eclipsed $750 billion in 2025, and yet most of this investment drives traffic to websites that still fail basic usability tests for users with disabilities.
WebAIM’s analysis of one million home pages found an average of a whopping 56.1 accessibility errors per page, with several of the most common violations directly blocking conversion paths.
| WCAG Failure Type | % of home pages |
| Low contrast text | 83.9% |
| Missing alternative text for images | 53.1% |
| Missing form input labels | 51% |
| Empty links | 46.3% |
| Empty buttons | 30.6% |
| Missing document language | 13.5% |
Low-contrast text makes CTAs invisible to users with visual impairments. Missing form labels prevent screen readers from announcing required fields.
Marketing teams will spend weeks testing whether a “Buy Now” button performs better in blue or orange while that same button lacks proper focus indicators, making it invisible to keyboard users. These seemingly minor technical barriers create systematic exclusion at the point of conversion, undermining every dollar spent to drive traffic to the page.
Screen readers and conversions
Marketing analytics tend to categorize cart abandons as “uninterested prospects” rather than customers blocked by technical barriers.
The most conversion-killing accessibility barriers cluster in forms and checkout sequences. Imagine you were going to make a purchase on an e-commerce site, and you got to the form to input your shipping and payment information, and all of the fields were blank. Are you more likely to try to guess what information goes where, possibly making multiple attempts to get it right, or just say “Well, I tried, and clearly this company doesn’t want my money” before leaving? Your users are making the same choice.
Mobile applications present even steeper conversion cliffs. Many mobile apps fail to provide basic accessibility metadata, making product images, prices, and purchase buttons invisible to assistive technology. The ADA’s 2024 mobile accessibility requirements mandate specific technical standards, but compliance remains spotty across major platforms.
Touch targets that are too small, missing alt text on product photos, and inaccessible shopping cart updates create systematic exclusion at the moment of purchase. Marketing attribution completely misses this dynamic, creating a feedback loop that reinforces the problem. Campaign optimization algorithms respond by reducing spend on demographics that include disability communities. Conversion rate optimization teams focus on friction points that affect the majority while ignoring barriers that block significant customer segments.
Marketing teams ignore a $490 billion customer segment
Americans with disabilities control $490 billion in annual disposable income, yet marketing departments routinely dismiss accessibility as a fringe concern. This market segment exceeds the purchasing power of entire demographic categories that companies spend millions to reach. As a segment this spending power grows faster than any demographic except Gen Z, but around 70% of consumers with disabilities abandon websites due to accessibility barriers.
The family effect multiplies this opportunity beyond individual consumers. Each person with disabilities influences additional household purchasing decisions, expanding the “accessibility market” even further.
Accessibility improves conversions across all user groups
Microsoft’s inclusive design research documented increased task completion rates across all users, not just those with disabilities, when sites used accessibility-optimized interfaces.
This phenomenon mirrors the curb cut effect in urban design: sidewalk ramps, intended to help wheelchair users, also help delivery workers, parents with strollers, and travelers with luggage.
Web accessibility works the same way. Voice control features designed for users with mobility impairments help drivers and multitasking professionals. Alt text written for screen readers powers image search algorithms that drive organic traffic. Focus indicators required for keyboard navigation improve usability on devices like tablets and smart TVs.
The business case for accessibility strengthens even further when it stops being treated as accommodation and starts being recognized as universal design that expands market reach universally.
Smart money follows smart design
The accessibility fixes with the highest customer acquisition impact follow a standard pattern. Revenue-critical pages require immediate attention because accessibility failures compound at decision points where customers commit money or personal information. Fix keyboard navigation, screen reader compatibility, and clear error messaging on these pages and all the elements within them.
Companies that implement accessibility improvements before competitors give themselves a meaningful differentiator. Your analytics should track assistive technology traffic separately from general analytics, monitor form abandonment by input method, and A/B test accessible versus standard design patterns to quantify conversion lift across all user groups.
Budget allocation for accessibility work should represent 8-12% of customer acquisition spending based on market size. The companies writing the biggest acquisition checks today will either fix the conversion blind spots that address these users, or commit to watching competitors capture their excluded traffic.
References
- ADA.gov. (2024, March 8). Fact Sheet: New Rule on the Accessibility of Web Content and Mobile Apps Provided by State and Local Governments. ADA.gov. https://www.ada.gov/resources/2024-03-08-web-rule/
- Baymard Institute. (2024, September 21). New E-Commerce Checkout Research – Why 68% of Users Abandon Their Cart – Articles – Baymard Institute. Baymard.com. https://baymard.com/blog/ecommerce-checkout-usability-report-and-benchmark
- Bhawalkar, G. (2025, February 3). Accessibility Is Still Vital For Businesses. Forrester. https://www.forrester.com/blogs/accessibility-is-still-vital-for-businesses/
- CDC. (2024, July 16). CDC Data Shows Over 70 Million U.S. Adults Reported Having a Disability. CDC. https://www.cdc.gov/media/releases/2024/s0716-Adult-disability.html
- Forrester: Firms Are Making Digital Accessibility A Global Priority — Yet Challenges Remain. (2022). Forrester. https://www.forrester.com/press-newsroom/firms-making-digital-accessibility-a-global-priority-yet-challenges-remain/
- Large-Scale Analysis Finds Many Mobile Apps Are Inaccessible. (n.d.). UW CREATE. https://create.uw.edu/initiatives/large-scale-analysis-finds-many-mobile-apps-are-inaccessible/
- Nielsen, N., & Group. (n.d.). Heuristic Evaluation Workbook. https://media.nngroup.com/media/articles/attachments/Heuristic_Evaluation_Workbook_1_Fillable.pdf
- Statista. (2024). Digital Advertising – Worldwide | Statista Market Forecast. Statista; www.statista.com. https://www.statista.com/outlook/dmo/digital-advertising/worldwide
- W3C. (2018, November 9). The Business Case for Digital Accessibility. Web Accessibility Initiative (WAI). https://www.w3.org/WAI/business-case/
- Wasilewski, A., Walecka-Jankowska, K., & Zgrzywa-Ziemak, A. (2025). A multi-criteria accessibility index for quantifying digital fairness in e-commerce. Information and Software Technology, 188, 107907. https://doi.org/10.1016/j.infsof.2025.107907
- Yin, M., Shaewitz, D., Overton, C., & Smith, D.-M. (2018). A Hidden Market: The Purchasing Power of Working-Age Adults With Disabilities. https://www.air.org/sites/default/files/2022-03/Hidden-Market-Spending-Power-of-People-with-Disabilities-April-2018.pdf
