How we build and verify these tools
Last verified: 21 June 2026
KomplyEU exists to make EU compliance legible to the businesses it affects. That only works if the tools are accurate. Here is exactly how they are built and checked.
Built from primary law, not summaries
Every calculator is built directly from the consolidated legal text published in the Official Journal of the EU and on EUR-Lex. We do not base logic on blog posts or vendor summaries.
Each tool cites the specific regulation, article and CELEX number and links to the source text, so you can verify any result against the law yourself.
Independently accuracy-audited
The calculation logic for every tool (the PPWR suite, CBAM, GDPR fines, the AI Act classifier, NIS2 and EPR) was reviewed line by line against the published regulation. Thresholds, fine tiers, deadlines and emission factors are checked against the Official Journal, not secondary sources.
Conservative by design
For borderline cases the tools flag uncertainty rather than declaring compliance. The AI Act classifier rounds up to the more restrictive tier when inputs are ambiguous. No tool outputs a hard 'you are compliant' verdict.
Kept current
Every tool and guide shows a last-verified date. When the Commission publishes an implementing or delegated act that changes a methodology, we update the affected tool and note the change.
Information, not legal advice
KomplyEU provides information about EU regulations based on the inputs you provide. It does not provide legal advice and does not replace qualified counsel. Results depend on the accuracy of your inputs.
Found something that does not match the current regulation? Email [email protected] and we will verify and correct it.