IMU on the Porter's Lodging: Taxpayer and Allocation

IMU on the porter's lodging is due when the room is a common asset of the condominium, distinct from the exclusive properties, and has its own cadastral income. In these cases the taxpayers are the owners collectively, each for their share in thousandths (millesimi), while the physical payment is made by the manager acting in the name and on behalf of all. The tax is due regardless of the actual use of the room, so even if it is empty or leased out.

When the Porter's Lodging Is Subject to IMU

The flat assigned to the porter, owned by the condominium and with its own cadastral income, falls among the common parts under Article 1117 of the Italian Civil Code. As a property with its own income, it is potentially subject to the municipal tax. Since it is not the exclusive property of a single person, it cannot benefit from personal reliefs such as the one for a main residence: the condominium is not a natural person residing there.

The tax is also due if the lodging is unused, because IMU is a property tax that targets the possession of the building and not its use. Likewise, it remains due if the room is granted to the porter under the employment relationship, or if it is leased to third parties.

Who Is the Taxpayer

The trigger for IMU is possession of the property. Since the porter's lodging is an undivided common asset, possession belongs pro rata to all owners, who remain the true taxpayers. The condominium as such is not an autonomous taxpayer with its own assets: it is a management body that collects and coordinates the obligations of its members.

In practice, each owner owes IMU for the fraction corresponding to their thousandths on the common asset. For order and simplicity, the manager makes a single cumulative payment and then recovers the shares from owners through the condominium accounts.

The Manager's Role and Payment

The duty to physically pay IMU on common assets rests with the manager, within their powers. The manager calculates the tax on the basis of the revalued cadastral income and the rate set by the municipality for the specific type of property, meets the advance and balance deadlines, and pays using the prescribed form with condominium funds.

• Obtain the autonomous cadastral income of the porter's lodging.
• Verify the municipal rate applicable to that property category.
• Calculate the advance and balance according to the ordinary tax deadlines.
• Make the payment using condominium funds.
• Allocate the charge among owners according to the correct criterion.

How It Is Allocated Among Owners

The IMU cost relating to the porter's lodging is a charge on a common asset and must be allocated among owners. The general criterion is proportion to the thousandths of ownership, consistent with the pro rata nature of possession of the asset. Where a table dedicated to the porter service exists, the charge may follow that table if the lodging serves that service, as provided by Article 1123 of the Italian Civil Code for expenses relating to common services.

Difference From Other Common Parts

Not all common parts generate IMU. Entrance halls, stairs, courtyards and rooms without their own cadastral income are not taxable as separate properties, because they have no income capacity of their own and are not registered separately. It is the existence of autonomous income that makes the difference: the porter's lodging, the common laundry, the condominium hall, if registered as property units with income, may be taxed, whereas accessory spaces without income remain outside the tax.

Mistakes to Avoid

The most common mistakes concern the improper application of personal reliefs to an asset that belongs to the collectivity, and the failure to verify the correct rate for the cadastral category. Another mistake is not updating the position after a change of use of the lodging, for example the conversion from porter's dwelling to income-producing premises, which may affect the applicable rate.

To calculate IMU on common assets, track the advance and balance deadlines and allocate the tax among owners automatically by table or by thousandths, management software such as AmministraPro lets you link the common property to the accounts and generate the shares without manual calculations. The features for local taxes are described on the /funzioni page and the plans can be reviewed on /prezzi.