Legal information
Last updated: 2 November 2026
Contents
In compliance with Spanish Act 34/2002 of 11 July on Information Society Services and Electronic Commerce (LSSI-CE), we inform you that this website, mul.tax, is owned by:
The purchase of paid services is governed by the Terms of contract.
Accessing and using this website implies full acceptance of the terms of use set out here. Users undertake to make proper use of the content and services offered and not to use them for activities that are unlawful or contrary to the law, morality or public order.
The owner reserves the right to modify, suspend or withdraw, in whole or in part, the content and services of the website at any time and without prior notice.
The content of this website (texts, images, logos, designs) is protected by intellectual property rights. Its reproduction, distribution or public communication without the owner's express authorisation is prohibited.
In compliance with Regulation (EU) 2016/679 (GDPR) and Spanish Organic Act 3/2018 (LOPDGDD), we inform you about the processing of personal data collected through this website.
Data controller: Vilafant Gestió SL, tax ID B65763526, josep@mul.tax
Purposes of processing and legal basis:
Withdrawing consent: you can stop receiving advertising at any time using the unsubscribe link in each communication or by writing to josep@mul.tax. Withdrawal does not affect prior processing.
Data retention: enquiries that do not lead to an engagement: 1 year from the last contact. Clients, claims and commercial documents: 6 years from the last accounting entry (art. 30 of the Spanish Commercial Code). Identification documents of tax or accounting advisory clients: 10 years (art. 25 of Act 10/2010). After these periods, data needed to deal with liabilities is blocked (art. 32 LOPDGDD). Encrypted copies of ID cards, passports and tickets, and document numbers: 1 year from the closure of the claim, or 18 months from the engagement if it is not recorded as closed. Advertising: until you withdraw consent; we then keep proof of your decision for 3 years.
Recipients: to process a claim we disclose the necessary data to the transport operator or the competent body. We do not disclose data to third parties for their own purposes, except where legally required. The following act as data processors: Namecheap (web hosting and email) and, if you use the website assistant, Cloudflare and Anthropic (AI assistant, see section 7).
International transfers: Namecheap, Inc. may transfer data to the United States. The applicable safeguard is the European Commission's standard contractual clauses (Decision 2021/914), included in its data processing agreement. You can request a copy from josep@mul.tax.
Journey checks: the initial check of a train delay does not ask for any personal data.
This website does not use advertising, analytics or third-party cookies. We only store your language preference in your browser and, if you use the assistant, a conversation identifier.
Under the GDPR, you can exercise the following rights over your personal data:
To exercise any of these rights, contact us at josep@mul.tax. You have the right to lodge a complaint with the Spanish Data Protection Agency (aepd.es).
For any question about this legal notice or the processing of your data, you can contact us:
This website offers a chat assistant whose answers are generated automatically by an artificial intelligence system (the Claude model, by Anthropic PBC), not by a person. This is disclosed in compliance with art. 50 of Regulation (EU) 2024/1689 on artificial intelligence.
Nature of the answers: they are general guidance and are neither a professional opinion nor a substitute for analysis of your specific case. Before filing any document, check the deadlines and the content of the administrative act. If you would like human assistance, you can write to josep@mul.tax or use WhatsApp.
Personal data: the text you enter is sent, through Cloudflare, Inc., to Anthropic PBC to generate the answer. Both act as data processors, under data processing agreements and standard contractual clauses for transfers outside the EEA. Anthropic does not use this data to train its models. We recommend that you do not enter tax IDs, third parties' names or other personal data that is not necessary. Legal basis: art. 6.1.b GDPR.