Who is responsible
123 Tax is a trade name of 123-NL B.V., Hurksestraat 60, 5652 AL Eindhoven, KVK 88560686, VAT no. NL864689561B01. 123-NL B.V. is responsible for processing your personal data. Questions? Email info@123-tax.nl · +31-657006565.
Which data
- Contact details: name, email address, phone number, address, preferred language.
- Business details: company name, legal form, KVK and VAT number.
- A copy of your identity document (required by law, Wwft).
- Financial data: invoices, receipts, bank transactions and returns you provide.
- Messages you send us via the portal, the contact form, email or WhatsApp.
- Payment details of your subscription (via Mollie).
Why
- To answer your request and carry out the assignment (performance of the contract).
- To verify your identity and meet our legal retention obligations (legal obligation).
- To send you reminders for your deadlines (performance of the contract).
We do not use your data for third-party advertising and we never sell it.
How long
- Records and returns: seven years (Dutch tax retention obligation).
- Copy of identity document: five years after the end of the client relationship (Wwft).
- Contact requests without an assignment: at most two years.
Who we share data with
Only when it is needed for our service:
- The Belastingdienst – when we file a return on your behalf.
- Mollie (Netherlands) – for payments.
- Supabase – storage for the portal, in a data centre in the EU.
- Netlify – hosting of this website and the contact form.
- Resend – sending login codes and reminders by email.
- WhatsApp (Meta) – only if you contact us via WhatsApp yourself.
We have agreements with all these parties on protecting your data. Where data leaves the EU, this is based on the European Commission’s standard contractual clauses or the EU-US Data Privacy Framework.
Security
Data is sent and stored encrypted. Only staff who need your file can see it. You log in to the portal with a one-time code sent by email.
Your rights
You have the right to access, correct, delete, restrict and transfer your data, and you can object. Send your request to info@123-tax.nl; we respond within one month. Data we are legally required to keep can only be deleted after the retention period. You can also file a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).
Version
This privacy statement was updated on 28 October 2026.