Airbnb & short-term lets: taxes, the CIN and guest rules

Short-term lets — stays under 30 days — are where Italian compliance gets genuinely layered: national tax, a national identification code, police reporting and municipal tourist tax, each with its own portal and its own deadline. Here is the whole picture for a non-resident owner.

The tax: 21%, then 26%

Income from short-term residential lets can be taxed under the flat cedolare secca: 21% on your first (or only) property, 26% from the second to the fourth. From the fifth property, the activity is treated as a business — VAT registration and a different regime entirely. Count carefully: the thresholds apply per owner, per tax year.

Platform withholding is not the end of the story

Airbnb, Booking and other platforms acting as intermediaries withhold 21% on payouts. Many owners assume this settles the tax. It does not: the withholding is an advance. You must still file an Italian return that declares the income, applies your actual rate (21% or 26%), and reconciles what was withheld — sometimes producing a top-up, occasionally a refund. Skipping the return because "Airbnb already took the tax" is the single most common error we correct.

The CIN: your national identification code

Every property offered for short-term rental must have a CIN (Codice Identificativo Nazionale), obtained through the national short-term rental database (BDSR) and displayed in every listing and at the property. Advertising without it draws fines up to several thousand euro, and platforms now require it. For owners without SPID or an Italian digital identity, obtaining it from abroad is awkward by design — it is one of the tasks clients most often hand to us.

Guests must be reported within 24 hours

Italian public-security law requires every guest's identity to be reported to the State Police through the Alloggiati Web portal within 24 hours of arrival (or on arrival for one-night stays). This applies to private owners, not just hotels. Access credentials come from the local Questura — again, a procedure that assumes you are in Italy.

Tourist tax

Most municipalities levy a per-night imposta di soggiorno, which the host must collect, declare and remit on the municipality's own schedule and portal. Some platforms collect it automatically in some cities; most combinations leave it to you. The declaration is due even for periods with zero guests.