Foreign-owner FAQ

Catalonia guest-registry questions from non-resident owners

The questions below come up repeatedly from US, UK, Irish, Canadian and other non-resident owners trying to comply with Catalonia's guest-registration regime from abroad. The answers are based on the text of the regulation, the administrative practice observed in the first eighteen months of full enforceability, and the typical operational set-up of a foreign-owned holiday rental. They are general information, not legal advice — situations involving multiple properties, complex ownership structures, or live disputes should be discussed with a Spanish lawyer.

1. Can I use my US (or UK, or Australian) passport as ID to obtain a Spanish Digital Certificate?

Not directly. The FNMT Digital Certificate is issued against a Spanish identification — a NIF for Spanish citizens or a NIE for foreign nationals. Your foreign passport identifies you, but the certificate-issuing infrastructure does not enrol you on the basis of a foreign passport alone. The standard route for a non-resident owner is to obtain a NIE first (through the Spanish consulate in your country, or in person in Spain), and then apply for the certificate using the NIE. Alternatively — and far more commonly for owners with a single property — you appoint a representative in Spain who holds their own certificate.

2. Do I have to be in Spain to comply with the Mossos guest registry?

No. The obligation rests on you as the host, but it does not require your physical presence. What it requires is that the data is filed within 24 hours of each guest's check-in, with the right credentials, from the right portal. All of this can be done by a delegate acting on your behalf, or by a specialist service. The vast majority of foreign-owned properties in Catalonia are administered without the owner ever logging into the Mossos system personally.

3. What does an authorised representative cost?

The market range is wide because it bundles different services. A bare-bones Spanish gestoría that simply files data you provide can cost on the order of a few hundred euros a year per property. A full-service property manager that takes the entire check-in flow, including guest-registry filing, typically prices it within an overall management fee — there is no separate line item. Specialist subscription compliance services aimed at this single problem typically price per property per month, often in the €15–€30 range, with the volume of guests included. The right comparison is not the absolute cost but the cost of the alternative — your time, your error risk, and the downside of a sanction.

4. Is the Mossos system really separate from SES.Hospedajes, or can one filing cover both?

They are separate systems. A filing to SES does not register the stay with the Mossos and a filing to the Mossos does not register the stay with SES. If your property is in Catalonia, you file only with the Mossos; SES is the wrong system. If you have properties in both Catalonia and, say, Madrid, you must enrol the Madrid property in SES and the Catalan property in the Mossos system, and file each stay in the relevant system. Specialist services that operate across both regimes maintain separate pipelines internally.

5. What if my property manager fails to file a parte for one of my guests?

The legal liability rests with you as the host; the manager's failure does not protect you from a sanction. What the manager's failure may do is create a contractual claim of yours against the manager — depending on what your management contract says. As a practical matter, ask your manager for a monthly or quarterly report showing one Mossos filing per stay; if you can't reconcile that against your own list of bookings, you have a problem to investigate now rather than later. Most reputable managers will provide this report on request; a manager unable to produce it is a red flag.

6. Does Airbnb (or Booking) file on my behalf?

No. Airbnb and Booking have their own obligations to report bookings and cancellations to the relevant authority, but the obligation to report the actual guest check-in is the host's. The platform's reporting and yours are parallel duties; satisfying one does not satisfy the other. A common assumption in the foreign-owner market is that the platforms "take care of it" — they do not, and proceeding on that assumption is the single biggest non-compliance pattern.

7. Are paper forms still acceptable?

Not as a submission method. Since the new regime became fully enforceable in December 2024, guest data is submitted electronically to the Mossos portal. A paper signature can still be part of your internal three-year archive, but it does not substitute for the electronic filing. Operators that still rely on paper as their primary medium are out of compliance.

8. Do I have to register my guests' children?

Yes — every guest, every age, with no exceptions. Babies and children are registered with their name, date of birth, sex and nationality. Children under 14 do not need to present an identification document and do not sign the parte; the accompanying adult signs on their behalf. When a minor is on the stay, the "relationship to accompanying adult" field becomes mandatory and is one of the fields most often missed by manual filers.

9. Can I keep a photocopy or scan of my guests' passports?

No. The Spanish data-protection authority has been consistent that the guest-registration obligation does not extend to storing the document itself. You record the specific fields listed in the regulation; you do not keep a copy of the passport. This is a separate, sanctionable GDPR matter. A common foreign-owner habit — taking a photo of the guest's passport at check-in and storing it on a phone — is itself a breach.

10. What happens if I'm late on one filing?

A single late filing is a minor infraction, fineable in the €100–€600 band. In practice, an isolated first late filing is usually resolved with a formal warning and a fine close to the floor, accompanied by a requirement to regularise. The risk profile changes with repetition: a pattern of late filings escalates the classification and the amount. If you discover a late filing, file it as soon as possible — late is better than never, and the demonstrated correction is a mitigating factor.

11. How long do I have to keep the records?

Three years from the end of each stay, if you operate as a professional host. Non-professional hosts are not formally required to keep the archive, but doing so is the prudent path because it is the only evidence you can produce on demand. The archive should include the data filed, the signed parte (in whatever form), and the Mossos confirmation receipt, organised by stay so individual records can be produced quickly. At the end of three years, the records should be deleted; they should not be retained indefinitely.

12. I live in the US and don't have a NIE. What's the fastest route to compliance?

The fastest route is to appoint an authorised representative in Spain who holds a valid Digital Certificate and is willing to file on your behalf. The representative can be a Spanish-resident individual you know, a gestoría, your property manager (if they offer the service), or a specialist compliance company. The authorisation needs to be in writing and, in many cases, recorded in the appropriate registry — a one-time administrative step. Once it is in place, the representative can enrol your property in the Mossos system and start filing.

13. Do I need to communicate cancellations or no-shows?

Cancellations and no-shows before check-in do not generate a filing obligation for the host — there is no "check-in" to report. The platforms (Airbnb, Booking, etc.) have a parallel obligation to report cancellations they receive. If a guest checks in and then leaves early, the host should reflect the actual exit date in the record. If you have already filed and the booking is then cancelled, contact your representative or service to remove or correct the record.

14. Where exactly is the guest supposed to sign?

On a record that is kept by you (or your representative) as part of the three-year archive. The signature itself is not uploaded to the Mossos portal; what is uploaded is the structured data. The most common and least painful signature method for an absentee operation is a pre-arrival check-in flow that emails the guest a link, captures the data and signature in their browser, validates by SMS or email OTP, and timestamps the record. This avoids the need for any signing at the front door.

15. What payment information do I have to report?

Only the payment type: cash, card, bank transfer, platform, or other. The actual card number, IBAN, or platform transaction reference is not part of the required fields. Early drafts of Real Decreto 933/2021 did include the full bank data, but it was dropped before final adoption — the regulation now collects only the category of payment.

16. Can I refuse a guest who won't provide their data?

Yes. The host has the right to deny accommodation to a guest who refuses to provide the data the regulation requires. The obligation is yours; if the guest does not cooperate you cannot satisfy it, and the law does not require you to host them anyway. The pragmatic approach is to make the data requirement explicit in your booking confirmation and welcome message, so guests are not surprised at the door. In practice, a clear pre-arrival check-in flow takes this off the table almost entirely — guests have already provided the data before they arrive.

17. Does the obligation apply if my Catalan property is rented for a few months at a time, not nightly?

This is the boundary between short-term holiday rental (regulated by tourism law and covered by the guest-registry rules) and longer-term residential lease (regulated by Spain's urban-lease law). As a rule of thumb, stays organised as tourist accommodation, marketed on holiday-rental platforms, and short enough that they don't qualify as a residential tenancy fall under the guest-registry rules. Long-term residential leases under the LAU do not. The line is regulated by Catalan tourism law and depends on the contractual setup and the typical length of stay; in grey areas, take advice. Doing both — letting on Airbnb for some periods and on a long lease for others — typically means complying with both regimes during the respective periods.

18. I never enrolled and I've been letting my property for over a year. What should I do?

Regularise voluntarily, and do it now. Concretely: appoint a representative (or use your own credentials if you have them), enrol the property in the Mossos system, reconstruct the records of recent stays from your platform data and booking history to the extent you can, and set up a system that will ensure compliance going forward. Voluntary regularisation does not extinguish past breaches but is treated as a mitigating factor and frequently leads the authority to close the matter without formal sanction. The opposite — sitting on the gap and hoping not to be noticed — is the worst combination, because the clock for a continuing breach does not start running until the conduct stops.

19. Do I also need to worry about the Catalan tourist tax?

Yes, but it is a separate obligation. The Impost sobre les estades en establiments turístics is a Catalan tax on overnight stays in tourist accommodation. You collect it from the guest, file periodic returns with the Agència Tributària de Catalunya, and remit the collected amount. It runs in parallel with the Mossos guest registry: complying with the registry does not satisfy the tax filing, and vice versa. Both apply to the same stay, both must be handled correctly, and the cross-checks between them are increasingly used to detect non-compliance with either.

20. What about my HUT or HUTB licence — is that the same thing?

No. The HUT/HUTB is the tourist-rental licence the property itself must hold to be marketed and let short-term in Catalonia. It is issued by the Generalitat or the Barcelona city council and must be displayed on every listing. The guest registry is a separate, ongoing reporting obligation. The licence does not exempt you from filing guest data; the filing does not substitute for the licence. Owning a HUT-licensed property and not filing guest data is a serious-tier registry breach; filing guest data while operating without a valid HUT is a licensing breach to a different authority. Both regimes apply at once.

If your question isn't here

The twenty questions above cover the cases that come up most often, but real-world holiday-rental operations generate a long tail of edge cases: a guest who arrives at 3am on Christmas Day, a group booking under one name with eight different surnames, a guest who refuses to share their passport because of cultural or personal concerns, a stay that straddles a change of property manager, a property co-owned by two foreign owners with different setups, a US LLC owning a property in Barcelona for personal use four weeks a year. The Mossos regime accommodates most of these — sometimes elegantly, sometimes awkwardly — but the constants are always the same: the 24-hour deadline, the integrity of the data, the proper signature, and the three-year archive.

If your situation is one of these and you can't find the answer here, the best starting points are the operational guide for where your case fits in the flow, and the sanctions page for the downside if it goes wrong. If the case is novel or expensive, take Spanish legal advice; if it's routine but operationally painful, the right answer is usually a specialist service that has already seen the case before.