Short-term letting in Italy: the rules.
In Italy, a national code identifies every property let on a short-term basis: the CIN. It is compulsory from a single letting a year, and must appear on all your listings.

The number you need
Where to apply: The Ministry of Tourism's Banca Dati delle Strutture Ricettive
The CIN, compulsory from the very first letting
The code identifies each unit intended for tourist letting. It is applied for free of charge online on the ministry's database, once land registry data has been verified and safety requirements declared.
- Compulsory even for a single letting a year
- To be shown in every listing, whatever the platform
- Also to be displayed near the entrance to the property
Penalties
Not having a code exposes you to fines of several thousand euros, on top of which comes a separate penalty where the code exists but does not appear on the listings.
Tax: the cedolare secca
Short-term rental income may fall under a flat-rate levy, the cedolare secca, whose rate and conditions depend on the number of properties let. Above a certain number, the activity shifts into a business regime.
And once you're compliant
Your number, your instructions, your rules: in the same place as everything else.
The welcome book shows what your guests need to know, in their language: the house rules, the recycling instructions, the quiet hours, and the registration number if you want to display it.
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