Subletting on Airbnb in Italy 2026: Is It Legal and What You Need From Your Landlord

Subletting on Airbnb in Italy 2026: Is It Legal and What You Need From Your Landlord

Want to list an Italian apartment on Airbnb but you are a tenant, not the owner? Subletting for short-term tourist rental purposes is legal in Italy only with written landlord authorisation under Art. 1594 of the Italian Civil Code. This guide explains the legal requirements, the documents you need, the tax treatment and the real risks of getting it wrong.

The rent-to-rent model - where a tenant leases an apartment long-term and then sublists it on Airbnb or Booking.com at higher nightly rates - is increasingly common in Italy. Foreign nationals living in Italian cities, expatriates and international property managers are particularly interested in this model. It is legally viable in Italy, but with very specific conditions that are frequently misunderstood or ignored, creating serious legal and financial exposure for both the subtenant and the owner.

This guide explains Italian subletting law in straightforward terms for English-speaking readers, covering the core legislation, what your landlord must give you in writing, the CIN registration process as a subtenant, and the completely different tax treatment compared to an owner who rents directly.

The legal foundation: Art. 1594 of the Italian Civil Code

The core rule governing subletting in Italy is Art. 1594 of the Codice Civile (Italian Civil Code), which establishes three cumulative conditions for a lawful sublease:

• The lease agreement must not prohibit subletting. Many Italian residential leases - particularly regulated-rent agreements (canone concordato) and standard market-rate contracts - contain explicit subletting prohibition clauses. If a prohibition clause is present, no subletting is possible even if the landlord verbally agrees: the contractual prohibition is binding on third parties.
• The landlord must give written consent. Verbal agreement is not sufficient either for legal validity or for the subsequent administrative procedures (CIN registration, BDSR). You need a signed written authorisation explicitly permitting tourist rental subletting.
• The sublease must remain within the limits of the main lease. You cannot sublet for longer periods than your own lease, nor for uses not permitted under your contract.

An important additional requirement: tourist subletting (rentals of less than 30 days) qualifies as a locazione turistica under DL 145/2023 Art. 13-ter and requires all the compliance steps applicable to standard tourist rentals, including CIN registration.

What the landlord's written authorisation must contain

The landlord's authorisation has no standardised official form, but must include minimum elements to be usable in the BDSR CIN registration process and as evidence in any dispute. The document must include:

• Landlord's full details: full name or company name, Italian tax code (codice fiscale), residential or registered address.
• Tenant's full details: full name, codice fiscale, current address.
• Precise property identification: full address, cadastral reference (foglio, particella, subalterno). These must exactly match the cadastral survey document to be uploaded with the CIN application.
• Explicit authorisation wording: a statement that the landlord explicitly authorises the tenant to sublet the property to third parties for consideration via short-term tourist rental platforms, in accordance with Art. 1594 c.c. and applicable tourist rental regulations.
• Validity period: typically matching the duration of the main lease agreement.
• Date and handwritten signature of the landlord.

Having the landlord's signature authenticated by a notary (notaio) is not legally required but is strongly recommended: it makes the document enforceable against third parties without disputes about signature authenticity. Notary authentication in Italy typically costs 50-150 EUR.

CIN registration as a subtenant: who applies and how

The CIN (Codice Identificativo Nazionale) for a sublet property must be obtained by the tenant-sublessor, not the property owner. The subtenant is the person exercising the tourist rental activity and is therefore the CIN holder under DL 145/2023 Art. 13-ter.

The BDSR registration process for subtenants requires additional documents beyond the standard owner application. In addition to the standard documents (cadastral survey, floor plan, codice fiscale, RC insurance policy), the subtenant must provide:

• The main lease agreement (complete text, showing absence of subletting prohibition or a modified clause).
• The landlord's written authorisation for tourist subletting.
• Proof of identity as the tenant named in the main lease.

Processing times are the same as for standard CIN applications (1-5 working days), but rejection rates are higher due to documentation inconsistencies between the lease agreement and the authorisation letter. Ensure all names, addresses and cadastral references are identical across all documents.

Tax treatment: cedolare secca does NOT apply to subtenants

This is one of the most common and costly misconceptions among foreign nationals running rent-to-rent operations in Italy: cedolare secca (the flat-rate 21% or 26% substitutive tax on rental income) does not apply to subtenants. Cedolare secca is a substitutive tax regime available to property owners under Art. 26 TUIR and D.Lgs. 23/2011. A subtenant is not an owner, so the income from subletting falls under Category B income (other income) subject to ordinary IRPEF (personal income tax) at progressive rates.

In practical terms, this means:

• Subletting income must be declared in the RL section of the Italian annual income tax return (Modello Redditi/Unico), not in the B section (property income).
• IRPEF rates apply progressively: 23% on the first 28.000 EUR of total income, 35% from 28.000 to 50.000 EUR, 43% above 50.000 EUR, plus regional and municipal surcharges.
• If Airbnb or Booking.com withholds a 21% tax at source (as Italian withholding tax intermediaries), this is only a payment on account and not the final tax liability.
• Lease registration: standard Italian lease agreements must be registered with the Agenzia delle Entrate. The tourist sublease itself does not require formal registration if each rental period is under 30 days, but the authorisation letter should be kept as documentary evidence.

If you are a UK or US resident subletting an Italian apartment, you may also have tax obligations in your home country under the UK-Italy or US-Italy double taxation treaties. The Italian IRPEF paid is generally creditable against UK or US tax, but the calculation requires specialist advice.

The rent-to-rent business model: when it becomes entrepreneurial activity

The rent-to-rent model is legally viable in Italy as a personal income arrangement for one or two properties. However, from the third property managed under a similar arrangement, DL 145/2023 Art. 13-ter creates a presumption of entrepreneurial activity. This means:

• VAT registration (Partita IVA) with ATECO code 55.20.51 becomes mandatory.
• Business registration with the Chamber of Commerce (Camera di Commercio) is required.
• A SCIA (Certified Start Activity Declaration) must be filed with the local SUAP (Single Business Contact Point) for each property managed.
• INPS social security contributions apply on net business income.
• Full business accounting (bookkeeping, VAT returns, profit and loss accounts) is mandatory.

Even with one or two properties, if the activity is habitually and systematically conducted, the Agenzia delle Entrate can reclassify it as entrepreneurial in a tax audit. The three-property threshold is the legislative bright line, not necessarily the absolute limit of what constitutes entrepreneurial activity.

Legal risks of subletting without proper authorisation

Operating without the correct authorisations creates legal exposure on multiple levels:

• Lease termination: if the lease prohibits subletting, the landlord can seek judicial termination of the lease for material breach under Art. 1453 c.c. The tenant loses the property and may face damages claims.
• CIN sanctions: operating without a valid CIN incurs fines of 800 to 8.000 EUR per rental period under DL 145/2023. The subtenant is personally liable for these fines even if the landlord was aware of the activity.
• Tax penalties: declaring subletting income under the wrong tax regime (using cedolare secca instead of IRPEF) or failing to declare it entirely triggers assessments with penalties of 100-200% of the unpaid tax plus interest.
• Guest liability: the subtenant is legally responsible to guests as the landlord under Italian consumer protection law. Without adequate RC insurance, personal liability for guest injuries or property damage is unlimited.

Practical checklist for legal subletting in Italy

• Read your full lease agreement carefully for subletting prohibition clauses before any other steps.
• If no prohibition exists, obtain written authorisation from your landlord containing all elements listed above.
• Prepare BDSR documents: lease agreement, landlord authorisation, cadastral survey, floor plan, RC insurance policy, identity document.
• Register the CIN through the BDSR portal in your name as the tenant-sublessor.
• Display the CIN in all listings on all platforms.
• Consult an Italian commercialista (tax professional) to set up correct IRPEF reporting for subletting income.
• Assess whether your activity constitutes entrepreneurial activity requiring P.IVA (three or more units, or systematic professional operation).
• Comply with alloggiati-web guest registration within 24 hours of each arrival.

For the full CIN registration process, see the CIN registration guide for foreign owners in Italy. For insurance requirements, read the RC insurance guide for Italian STR.

This article is for informational purposes only. HostReady does not provide legal or tax advice. Consult a qualified Italian lawyer and commercialista for advice specific to your situation and the exact terms of your lease agreement.