Tax procedure software for accounting and tax firms
Purpose-built software for tax and accounting firms that handle Dutch procedures: 30% ruling, fiscal unity CIT and VAT, ATAD2 hybrid-mismatch, and annual figures to RGS import file. Give the tool the client facts, get back a completed Dutch tax form or import file. € 39 excl. VAT per finished document, no subscription. Deterministic, EU-only, no client data stored.
KvK 42057580 · Amsterdam · GDPR/EU processing, no storage
What Lowkey is
No platform to learn. Four Dutch tax procedures, handled deterministically.
Lowkey is tax procedure software for accounting and tax firms: purpose-built tools for the 30% ruling, fiscal unity CIT, and ATAD2 hybrid-mismatch. The math and the form-filling follow fixed rules, so the output is the same every time. Where a form needs to read an upload, a model only reads it. It never decides the numbers.
Deterministic · EU only · No subscription
§ 01 / Tools
The application for the expat scheme, plus the cover letter that goes with it. Employer and employee details in once. The tool returns the request in the official Dutch tax format and a letter for your own letterhead.
Lots of expat clients? For expats who would rather file it themselves, there is the self-service at dutch30percentruling.com.
How the 30% ruling works →The request to form a corporate income tax unity between a parent and its subsidiaries. Parent and subsidiary data in, the Part A and Part B forms out, consistent and ready to sign.
How the fiscal unity works →The request to form a VAT fiscal unity between financially, organisationally and economically intertwined entities (art. 7(4) Wet OB). The tool returns the request letter with a reasoned verwevenheid motivation, ready to check and send.
How the VAT fiscal unity works →Qualification of hybrid mismatches under ATAD2. Describe the structure and the payment flows, the tool identifies the applicable article, the neutralisation rule, and the tax consequence. Deterministic based on the statutory text, no generative guesswork.
Go to the ATAD2 tool →Upload the annual accounts or trial balance and get back an RGS bridge file (brugstaat) you import straight into your filing software (Nextens or AFAS). Every ledger account mapped to RGS 3.5, with explicit review points for the items the advisor should check. You review and approve, the tool does the typing.
Go to the bridge tool →Not sure which type fits your practice? Compare full filing suites, general AI, and specialist procedure tools in the honest comparison.
§ 02 / EU & Privacy
EU only, by design
Documents and client facts you put into a Lowkey tool are processed to produce your result, then discarded. Every part of the stack that touches your data runs on EU infrastructure. Nothing leaves the EU. That fits your professional confidentiality and the GDPR.
§ 03 / Pricing
You are billed per finished document, collected monthly through Stripe. No seats, no minimum, no setup fee. Draft, review, and discard as much as you like. You only pay when a document is produced.
§ 04 / Questions
No. Uploads are processed in memory to produce your form and then discarded. We keep one billing line per finished document, never the contents. Everything runs on EU infrastructure.
€ 39 per finished document in the portal, excl. VAT, for the 30% ruling and the fiscal unity. No subscription, no seats, no setup fee.
No. The tools fill in forms and draft the cover letter. The firm checks and files. The judgement and the responsibility stay with you.
SME tax and accounting firms and expat specialists that regularly handle 30% rulings, fiscal unity requests, or ATAD2 hybrid-mismatch structures.