How often should you conduct an accessibility audit?
Most organizations should conduct an accessibility audit at least once per year. Sites that update frequently or operate in high-risk industries may need evaluations every six months. The right accessibility audit frequency depends on how often your digital content changes and how much legal exposure your organization carries.
| Key Point | What It Means |
|---|---|
| Minimum Frequency | Once per year for most organizations |
| Higher Frequency Considerations | Major redesigns, new features, CMS migrations, or high legal exposure |
| Scans Between Audits | Automated scans can run on a recurring schedule but only flag approximately 25% of issues |
| Audit Scope | A full evaluation covers screen reader testing, keyboard testing, visual inspection, and code review |
What Determines the Right Accessibility Audit Frequency?
The pace of change on your website is the single biggest factor. A static informational site that updates quarterly has different needs than an e-commerce platform shipping new features every sprint.
Every time a significant design or code change goes live, new accessibility issues can be introduced. A redesigned checkout flow, a new navigation menu, or a content management system migration can each affect WCAG conformance in ways that only a thorough evaluation will identify.
Annual Audits as a Baseline
An annual audit gives organizations a structured checkpoint. It produces a full accounting of accessibility issues across the site, measured against a specific WCAG version and conformance level (typically WCAG 2.1 AA or WCAG 2.2 AA).
For organizations with relatively stable websites and low update frequency, an annual cadence is a reasonable baseline. This is also the interval many organizations use to keep an Accessibility Conformance Report current for procurement purposes.
When Six-Month or Quarterly Evaluations Make Sense
Organizations that release new functionality on a regular cycle often benefit from more frequent evaluations. A six-month cadence works well for sites with moderate update schedules. Quarterly evaluations may be appropriate for large-scale web applications or platforms with continuous deployment pipelines.
Industries with heightened legal exposure under ADA Title III, such as retail, hospitality, banking, and healthcare, often adopt a shorter audit cycle as part of their risk reduction strategy.
Using Scans Between Audits
Automated accessibility scans can run on a daily, weekly, or monthly schedule to catch regressions between audits. Scans evaluate HTML, CSS, and ARIA attributes against WCAG success criteria and report issues in real time.
Scans are not a substitute for a full accessibility audit. They flag approximately 25% of accessibility issues. The remaining 75% requires human evaluation, including screen reader testing, keyboard testing, and visual inspection. Scans serve as an early warning system, not as an evaluation method on their own.
After a Major Change, Do Not Wait
Certain events should prompt an audit regardless of where you are in your regular cycle. A site redesign, a platform migration, the launch of a new product section, or a shift to a new front-end framework are all events that warrant a fresh evaluation.
Waiting until the next scheduled audit after a major change leaves the organization exposed to both user experience problems and legal risk during the interim period.
Building a Recurring Evaluation Schedule
A practical approach combines a fixed annual or semi-annual audit with ongoing automated scans and event-driven evaluations. The fixed audit provides a thorough baseline. Scans monitor for regressions. Event-driven audits cover major releases.
This layered approach keeps WCAG conformance visible as an ongoing operational concern rather than a once-a-year checkbox.