What it costs to get it wrong
The fines look alarming on paper — up to €30,000 — but the numbers only make sense once you see which mistake lands you in which band. The everyday slip is cheap. The expensive one catches people who never started.
The two bands
Minor
Late filing, incomplete or inaccurate data, good-faith errors. The everyday slip.
Serious
Never registering as a provider, omitting filings entirely, or repeated minor breaches.
Both come from Ley Orgánica 4/2015, articles 36–38 — the same public-safety law that authorises the registry in the first place. The sanctioning authority is the Ministry of the Interior (and the regional bodies in Catalonia and the Basque Country for their own systems).
The expensive mistake people don't see coming
Not registering as a provider is a serious infraction on its own — before you've filed a single guest late.
Most owners assume the risk is a late parte here or there. That's the cheap band. The costly one is structural: if you've been letting without ever enrolling as an accommodation provider, you're already exposed to the €601–30,000 range. If you take only one thing from this page, make it this — register first, then worry about the per-stay routine.
What changed in 2025
For a long time the duty was barely enforced. That shifted. In 2025 the administration moved from sending warnings to opening actual sanction proceedings. At the same time, the booking platforms began cross-checking whether hosts are registered.
The quieter risk
It isn't only the fine. If Airbnb or Booking flags you as unregistered, your listing can be suspended — and for most hosts a pulled listing hurts more than a €600 penalty.
Staying on the safe side
None of this requires perfection — just being registered, filing within 24 hours, and getting each guest's data right for their country. The first is a one-off; the rest is a habit. The easiest way to keep the habit is to take the data off your plate.
Stay Comply by Tourist Tax Manager
Guests enter their own details before arrival and we build the compliant file — so the 24-hour clock stops being a worry and rejections (the usual cause of "late") largely disappear. You still file under your own login.
See how it worksSources
Ley Orgánica 4/2015
The penalty bands and infraction categories (arts. 36–38).
Read the lawSES.Hospedajes
Where you register as a provider — the step that avoids the serious band.
Official portal