How Often Should You Re-Audit a Website?

how often should you re-audit a website for accessibility

Accessibility audits are not one-time projects. Websites change too often for that.

Developers deploy new features. Marketing teams add landing pages. Third-party plugins update automatically. A site that passed accessibility testing six months ago can fail basic accessibility checks today.

Companies dealing with website accessibility under the Americans with Disabilities Act eventually run into the same question:

How often should a website be audited again?

The short answer depends on how often the site changes. But patterns appear across industries. Organizations that take accessibility seriously usually test their sites on a predictable schedule and run automated checks in between.

The reality is less tidy for most businesses. Many websites get audited once, publish an accessibility statement referencing Web Content Accessibility Guidelines (WCAG), then go years without another review.

That gap creates problems.

what an accessibility audit actually checks

A website accessibility audit measures how well a site works for people who rely on assistive technology.

Most professional audits test the site against WCAG success criteria. WCAG was developed by the World Wide Web Consortium and is widely used in accessibility litigation and procurement policies.

The guidelines cover many areas of digital accessibility:

keyboard navigation
screen reader compatibility
text alternatives for images
color contrast
form labels
focus order
error messaging

Automated tools can detect some of these issues. Many cannot.

Screen reader usability, keyboard navigation order, and interactive components require manual testing.

During a full audit, accessibility testers usually:

navigate the site using only a keyboard
test with screen readers such as NVDA or VoiceOver
check color contrast
review page structure and semantic markup
evaluate form usability

A typical audit examines representative page types rather than every page on the site.

For example, an e-commerce audit might include:

home page
product listing page
product detail page
shopping cart
checkout page
account login page

Testing these patterns reveals accessibility problems that repeat across the site.

why accessibility audits expire quickly

Accessibility audits have a shelf life because websites change constantly.

Content teams publish articles every week. Designers change layout components. Developers introduce new scripts or widgets.

Each change can introduce accessibility issues.

A single plugin update can break keyboard navigation. A design refresh might reduce color contrast. A marketing landing page may launch without proper heading structure.

These problems show up frequently during follow-up audits.

An audit is really a snapshot of the site at one moment in time.

That’s the core limitation.

how often large organizations audit their websites

Large organizations rarely rely on one audit.

Universities and government agencies usually run accessibility reviews on a regular schedule because they must document accessibility compliance under laws such as Section 508 of the Rehabilitation Act.

Many universities perform annual accessibility audits of major web systems.

Some run automated accessibility scanning tools every week across thousands of pages. Manual testing usually happens less frequently because it takes time.

Enterprise software companies often audit their SaaS platforms before releasing major redesigns. They may also run targeted audits when launching new features.

The schedule depends on development cycles.

Sites that update constantly need more frequent accessibility reviews.

the three audit frequencies most companies end up using

Across industries, accessibility testing tends to fall into three rough categories.

Annual audits

Many companies schedule a full accessibility audit once per year.

This approach works reasonably well for websites that do not change frequently. Corporate marketing sites with limited content updates often fall into this category.

The limitation is obvious. Accessibility issues introduced mid-year may remain undetected for months.

Quarterly reviews

Organizations with active websites often run smaller audits every three months.

These reviews focus on recently added pages or components. They do not repeat the entire audit every time.

Quarterly testing catches problems earlier.

Continuous automated scanning

Many companies also run automated accessibility scanners daily or weekly.

These tools crawl the site and flag issues like:

missing alt text
low contrast text
empty form labels

Automated scanning cannot detect all accessibility problems. It misses issues involving keyboard navigation, screen reader announcements, and dynamic interface behavior.

Still, scanners catch a surprising number of problems quickly.

a real example where accessibility drift caused problems

In early 2022 a mid-size retail brand launched a new e-commerce site built on Shopify.

Before launch, the company hired an accessibility consultant to perform a WCAG audit. The site passed with relatively minor issues.

The company published an accessibility statement referencing WCAG 2.1 Level AA.

Then the marketing team started building promotional landing pages.

Within eight months the site had over 60 new pages built using a page builder tool. Those pages introduced accessibility problems that were not present in the original audit:

images without alt text
form fields without labels
heading structures skipping levels
buttons that could not be reached by keyboard

A blind user reported the problems through the company’s accessibility contact email.

An internal review found that the new pages had never gone through accessibility testing.

The original audit report was technically correct. It just no longer reflected the site.

This pattern appears often.

how development speed affects audit frequency

Development pace is one of the biggest factors determining how often a site should be audited.

Slow-changing sites

Small business websites with a few static pages change rarely. A yearly audit may be enough.

Moderately active sites

Corporate marketing sites and blogs change frequently but usually follow predictable templates. These sites often benefit from quarterly accessibility reviews.

Rapid development environments

SaaS platforms, e-commerce systems, and web applications deploy changes weekly or even daily.

These environments usually require:

automated scanning
periodic manual testing
accessibility checks built into development workflows

A yearly audit alone is not enough.

why automated accessibility tools cannot replace audits

Automated accessibility scanners are useful but limited.

Most tools check only about 30 to 40 percent of WCAG success criteria.

They can detect missing alt text or low color contrast. They cannot determine whether screen reader announcements make sense or whether keyboard focus order matches visual layout.

Manual testing is still necessary.

For example, a dropdown menu might technically exist in the page markup. Automated tools will detect nothing wrong.

A keyboard user may discover that the menu cannot open without a mouse.

That problem appears regularly during manual audits.

how accessibility lawsuits influence audit schedules

Accessibility lawsuits have pushed some companies to audit more frequently.

Under the Americans with Disabilities Act, businesses that operate public-facing websites have been sued for accessibility barriers.

Many complaints reference WCAG success criteria.

Lawyers reviewing websites often run automated accessibility scans first. If the scan finds dozens of issues, the site becomes an easier litigation target.

Companies that audit regularly usually detect and fix those problems earlier.

Regular testing does not eliminate legal risk. It does reduce the number of obvious failures visible during automated scans.

the role of accessibility testing in development workflows

Some organizations treat accessibility audits as external compliance checks.

Others build accessibility testing into the development process itself.

Teams using the second approach often run accessibility checks during development. Developers test new features with keyboard navigation before releasing them.

Design teams check color contrast before approving visual components.

This approach spreads accessibility work across the product lifecycle instead of waiting for annual audits.

The trade-off is cost.

Training development teams in accessibility takes time. Many companies still rely heavily on external audits instead.

how often government websites get audited

Government agencies typically audit their digital services regularly because they must comply with accessibility laws.

In the United States, federal agencies follow accessibility requirements under Section 508 of the Rehabilitation Act.

Agencies often maintain accessibility programs that include:

routine accessibility scans
manual accessibility testing
documentation of accessibility compliance

Large federal websites may be scanned weekly using automated tools.

Manual audits usually happen annually or during major redesigns.

what accessibility professionals recommend

Accessibility consultants often recommend layered testing rather than relying on a single audit.

A typical schedule might include:

automated scans weekly
targeted accessibility reviews quarterly
full manual audit annually

This structure balances cost with coverage.

The annual audit provides a detailed evaluation. Quarterly reviews catch changes. Automated scanning finds routine issues quickly.

The limitation is that even this schedule can miss problems introduced between reviews.

Accessibility work never really ends.

how content teams accidentally introduce accessibility problems

Developers are not the only source of accessibility issues.

Content teams introduce problems frequently when publishing new pages.

Common examples include:

uploading images without alt text
embedding videos without captions
creating headings that skip hierarchy levels
adding PDFs that lack accessibility tagging

These issues appear even on websites that passed earlier audits.

Training content editors helps reduce the problem. Many companies now include accessibility checks in content publishing guidelines.

the cost of repeated accessibility audits

Accessibility audits require time and money.

A small marketing site may cost $3,000 to $6,000 for a professional accessibility audit.

Large e-commerce platforms often cost $10,000 to $25,000 depending on the number of templates tested.

SaaS platforms with complex dashboards may exceed $30,000.

This cost explains why some companies audit only once.

The trade-off is risk.

Accessibility problems accumulate over time when audits stop.

signs that a website needs another accessibility audit

Certain events often trigger new accessibility reviews.

Major website redesigns
platform migrations
new e-commerce functionality
large content expansions
new JavaScript frameworks

Each change can introduce new accessibility barriers.

Testing after these events often reveals issues that did not exist in earlier versions of the site.

why accessibility audits should not be treated as certification

Some companies treat accessibility audits like compliance certificates.

They display a badge on the website or publish a statement claiming accessibility compliance.

That mindset causes problems.

Accessibility is not a static condition. It changes as websites evolve.

An audit report simply documents the condition of the site at the time testing occurred.

A redesign six months later may invalidate parts of that report.

a practical schedule many companies follow

In practice, many organizations end up following a hybrid schedule.

A full accessibility audit every 12 months.

Smaller targeted reviews every 3 to 6 months.

Automated scanning running continuously.

This approach catches most accessibility problems before they accumulate across the site.

It also spreads remediation work across the year instead of forcing large fixes after long gaps.

the underlying reality

Accessibility audits measure a moving target.

Websites are never finished. New code appears constantly.

Testing once and assuming accessibility will remain stable does not match how modern websites work.

Organizations that treat accessibility as an ongoing maintenance task tend to discover problems earlier.

Sites that treat accessibility audits as one-time compliance projects usually revisit the issue later, often after receiving user complaints or legal notices.

Accessibility testing schedules are really maintenance schedules.