Accessibility scans range from free open source options to paid platforms costing several hundred dollars per month. The price depends on the number of pages scanned, how often scans run, and whether the tool includes reporting or monitoring features. Most organizations spend between zero and a few hundred dollars monthly on scanning, making it one of the lowest-cost components of an accessibility program.
| Cost Factor | What It Means |
|---|---|
| Free Tools | Open source and browser-based scanners are available at no cost, though they typically lack scheduling, monitoring, and reporting features. |
| Paid Plans | Subscription-based scanners generally range from 50 dollars to 500 dollars per month depending on page volume and features. |
| Page Volume | Pricing often scales with the number of pages or domains included in each scan cycle. |
| Coverage Limitation | All automated scans detect approximately 25% of accessibility issues. The remaining 75% requires human evaluation. |
What Drives the Accessibility Scan Cost Up or Down
The biggest pricing variable is page count. A scan covering 50 pages costs less than one covering 5,000. Some tools charge per page, while others offer tiered plans with page limits baked in.
Scan frequency also affects cost. A one-time scan is cheaper than ongoing monitoring, where the tool runs on a recurring schedule (daily, weekly, or monthly). Monitoring subscriptions carry a higher price because they provide continuous data over time.
Feature depth matters too. A basic scanner that flags issues in a browser tab costs nothing. A scanner that produces exportable reports, tracks issue trends across scan cycles, and supports authenticated page scanning behind login walls will carry a subscription fee.
Free Scanners vs. Paid Scanners
Free scanners, including browser-based and open source options, work well for spot checks and developer workflows. They load a page, evaluate its HTML, CSS, and ARIA attributes against Web Content Accessibility Guidelines (WCAG) success criteria, and return a list of flagged issues.
Paid scanners do the same evaluation but add scheduling, historical tracking, dashboards, and multi-domain support. For organizations managing more than a handful of pages, the operational convenience of a paid tool often justifies the monthly cost.
Both free and paid scanners share the same core limitation: automated scans detect approximately 25% of accessibility issues. No amount of spending on scanning tools changes that ratio. The 75% that scans miss, including keyboard interaction patterns, screen reader behavior, and content meaning in context, requires a manual audit conducted by an accessibility professional.
How Scan Costs Compare to Audit Costs
Scanning is dramatically cheaper than auditing. Most accessibility audits start at 1,000 dollars and range to 3,000 dollars. A year of scan monitoring might cost 600 dollars to 3,000 dollars depending on the plan, but it serves a different purpose.
Scans provide ongoing, automated checks that catch regressions and surface the issues machines can identify. Audits provide the deep, human-led evaluation that identifies the other 75% of issues. The two are complementary, not interchangeable.
Organizations that treat scanning as a replacement for auditing save money in the short term but miss the majority of issues affecting real users. Organizations that pair scanning with periodic audits get both continuous monitoring and thorough evaluation.
What Affects the Total Cost of a Scanning Program
Beyond the tool subscription, consider the cost of acting on scan results. A scan that identifies 200 issues creates remediation work. Code remediation typically costs 250 dollars to 550 dollars per page or screen, depending on the complexity of the issues identified.
Some organizations also invest in authenticated scanning, which requires a browser extension running within an active user session to reach pages behind login screens. This adds setup time and may require a higher-tier plan.
The total cost of a scanning program is the tool cost plus the staff or vendor time needed to review results, prioritize issues by user impact and risk, and remediate what the scan identifies.
Choosing a Scan Investment That Fits
For a small site with under 100 pages, a free scanner used on a regular cadence may be sufficient as the automated component of an accessibility program. For larger properties, a paid monitoring subscription adds the scheduling, reporting, and trend tracking that make scan data actionable across teams.
Regardless of the tool’s price, the value of scanning is bounded by its 25% detection rate. Spending more on scanning does not reduce the need for a manual audit. It reduces the time between when a new issue appears and when someone notices it.
The most cost-effective approach pairs a scan tool matched to the organization’s page volume with periodic audits that cover what automation cannot.