Background · Catalonia
Why Catalonia keeps its own register
Before the deadlines and data, the thing to understand is the split: Catalonia doesn't use Spain's national guest-registration system at all. It runs its own, through the Mossos d'Esquadra. Here's where that comes from — written by someone who files it for a flat in Sitges.
The short answer
If you let property in Catalonia, you report each guest to the Registre de Viatgers dels Mossos d'Esquadra within 24 hours of check-in. It's the regional equivalent of the national duty — same idea, different portal, different login, different procedure. Sending your data to the national SES.Hospedajes system does not satisfy the Catalan obligation.
Quick orientation: "guest register" here is a public-safety record, not a tax. Catalonia's tourist tax is a separate thing entirely, with its own rules.
Why the region is separate
Spain's framework comes from Real Decreto 933/2021, with its legal authority in the public-safety law Ley Orgánica 4/2015. But Catalonia has its own integral police force — the Mossos d'Esquadra — with full competence over public security. Exercising that competence, the Generalitat runs its own register rather than routing through the national platform. The Basque Country does the same through the Ertzaintza.
The fields look similar to the national ones — name, date of birth, nationality, document, around twenty per guest — but the portal (registreviatgers.mossos.gencat.cat), the accepted logins (idCAT, idCAT Mòbil, Cl@ve, FNMT) and the file format are Catalan and distinct.
What changed in December 2024
The modern duty became fully enforceable across Spain on 2 December 2024, after two extensions, with inspections and sanction proceedings starting in 2025. For Catalan hosts the practical upshot is the same as elsewhere: the old, informal ways of doing this are gone, and the regional system is now the channel that counts.
Who it covers
Anyone taking paid stays at a Catalan property — tourist flats (HUT in Catalonia), rooms, villas, rural houses, campsites. Foreign owners with a holiday place on the coast are squarely included. If you list on Airbnb, Booking or Vrbo, treat yourself as a regular host. Both occasional and professional hosts file; professional hosts also keep a three-year documentary file.
Stay Comply by Tourist Tax Manager
Once you know it applies, the chore is the data. We built Stay Comply to collect each guest's details and produce a file shaped for the Mossos portal — official codes and all. You upload it yourself, with your own login.
See how it worksSources
Registre de Viatgers
The official Catalan portal where hosts upload guest data.
Open the portal