Browse and search
Find legislation and decisions in the portal. Open the sources and check the relevant tax year.
Dutch tax sources, in one place.
Search Dutch tax legislation, case law and policy. Prepare application forms and RGS files for your practice.
Legislation, case law, decrees, tax authority position papers, rulings and parliamentary history, with links to the source.
14 days without a card. Paid AI chat requires a saved card.
How to use it
MCP & API
Connect the sources to your own tools. Any costs of an external AI service are separate.
Connection instructions →Paid AI chat
Ask questions and review the sources used in the answer. Chat is billed separately by usage and requires a saved payment card, including during a knowledge-base trial.
Knowledge-base pricing
| Active users | Per month, excl. VAT |
|---|---|
| 1 | €30 |
| 2–5 | €60 |
| 6–15 | €120 |
| 16–30 | €240 |
| 31–60 | €400 |
| 61+ | €600 |
Active users are people who logged in during that month. Cancel monthly. The 14-day trial applies to knowledge-base access; AI chat is billed separately. Access is free for verified EU higher-education addresses for personal, non-commercial use.
Sources and data
Source references help you check an answer; they do not replace your assessment of its accuracy or relevance. Processing is in the EU. Chat history and file-review documents remain until your firm deletes them.
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