Estimate the investment for an accessible website – from WCAG audit to remediation and testing.
In brief
The investment frame for an accessibility retrofit is EUR 2,856 – 82,334 excl. VAT. Template condition and test effort move the project inside that band.
The upfront cost can be spread over 72 months. Terms are on the software financing page.
Related: accessible software development.
The calculation follows six visible stages. All figures remain planning values until scope and assumptions have been reviewed.
1. Capture inputs
The calculator records the visible project, volume, complexity and operating parameters selected on this page.
2. Add fixed components
Fixed base modules and selected add-ons are added without mixing them with recurring charges.
3. Apply multipliers
Quantity, complexity and scope factors multiply only the cost components identified for them in the calculator model.
4. Create the range
The calculator applies its documented lower and upper uncertainty factors to the base result; ROI views keep investment and savings visible separately.
5. Round and calibrate
Monetary result fields are rounded to the nearest whole euro. Public project-cost components are calibrated with the centrally maintained display factor.
6. Classify the result
The result is shown as non-binding guidance. A binding quote requires scope, data, integrations, risks and acceptance criteria to be reviewed.
Efficiency or discount factor: A central display factor of 0.7 is applied to public project-cost components to keep all calculators aligned with the currently reviewed pricing basis. It is not a customer-specific discount; customer-entered wages, revenues and existing operating costs are not reduced.
Why this is not a binding quote: The calculator cannot verify complete requirements, third-party dependencies, data quality, legal constraints or acceptance criteria.
Concrete project profiles with assumptions and indicative budgets—useful for internal alignment alongside the calculator.
FAQ
Since 28 June 2025 the BFSG – Germany's implementation of the European Accessibility Act – applies to B2C online shops, booking portals and certain apps.
Micro-enterprises below 10 employees and EUR 2 million turnover are exempt for services. Pure B2B offerings are not directly in scope but benefit from accessible implementation as well.
The European norm EN 301 549, which builds on WCAG 2.1 level AA: sufficient contrast, full keyboard operability, screen-reader compatibility, understandable forms and a published accessibility statement.
No.
Overlays do not fix structural issues in the markup and are regularly rated insufficient by auditors and courts. Sustainable accessibility lives in semantic HTML, focus management, contrast and forms.
Get a BFSG readiness check
We audit your site against WCAG 2.1 and prioritise the fixes that matter.
Smaller websites, online shops and complex web apps sit in the investment frame EUR 2,856 – 82,334 excl.
VAT The dominant cost driver is the technical starting point: clean semantic templates are cheap to fix, legacy frontends are expensive.
Three steps: a WCAG audit with a prioritised defect list, remediation in templates and components, and a final round of screen-reader testing plus the accessibility statement.
Monitoring and editorial guidelines keep the state stable afterwards.
| Model | When it fits | Budget & flexibility | Typical risks |
|---|---|---|---|
| Fixed price (fixed scope) | Clearly defined scope, stable requirements, repeatable delivery. | Predictable total cost; little room for change without a change order. | Scope creep leads to change orders or quality trade-offs. |
| Time & Material | Discovery, legacy, evolving requirements, or close collaboration. | Maximum flexibility; budget transparent via hourly or daily rates. | Without prioritisation, effort can grow—backlog and reviews matter. |
| Retainer / maintenance package | Ongoing operations, updates, small features, and support. | Agreed capacity per month; predictable follow-on cost. | Large changes may still need a separate estimate. |
| Hybrid (milestone + T&M) | MVP or phased releases with clear go-lives, then iterate. | Core delivery fixed price; extensions on a time-and-materials basis. | Define contractually what is in scope vs. extra work. |
Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.
The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.
Browse all cost calculators, explore services and typical solutions. Questions about accessible software? Contact us.
After using the accessible software calculator, validate assumptions in a short intro call.
Browse all cost calculators in the costs overview.
What does the accessible retrofit cost?
Interactive estimate based on your inputs.
Non-binding project range from the software cost calculator: EUR 10,332 – 372,623 excl. VAT.
Methodology: The estimates are based on historical project data, complexity drivers and standard implementation assumptions. Results are a non-binding indication only; effort and price must be calculated individually.
If you are still deciding
If you are ready to implement
Calculator overall range
EUR 5,600–112,000 excl. VAT, depending on audit and compliance depth
The overall range is derived from the valid parameters of the relevant cost calculator.
Typical duration
2–12 weeks
Main risk drivers
Non-binding indication
This result is only a non-binding indication based on typical assumptions. Effort and price must be calculated individually for your project.
A transparent four-step process for validating the Accessibility (BFSG) indication with concrete requirements.
1. Confirm scope and target outcome
We clarify the business outcome, user groups, and boundaries relevant to Accessibility (BFSG).
2. Review data, interfaces, and risks
We validate integrations, data quality, security, compliance, and operational dependencies.
3. Check the calculator assumptions
We compare the selected parameters with the real system landscape and document deviations.
4. Prepare the precise quote
You receive a scoped proposal with milestones, exclusions, price model, and next decision point.
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