If you own property in Italy, IMU (Imposta Municipale Unica) is a tax you need to understand. It is Italy's main property tax, levied by municipalities on the ownership of land and buildings. The good news is that your primary residence (prima casa) is exempt in most cases. The not-so-good news is that second homes, investment properties, and luxury residences carry rates that can be substantial. This guide covers everything property owners need to know about IMU in 2026.
Who Pays IMU?
IMU is paid by the owner (proprietario) of real estate in Italy, including:
- Owners of buildings, land, and building plots
- Holders of rights of usufruct (usufrutto), use (uso), or habitation (abitazione)
- Leaseholders on financial leases
- Concession holders on state property
The key exemption: your primary residence (abitazione principale) is exempt from IMU, provided it is not classified as a luxury property (categories A/1, A/8, or A/9 in the cadastral register). This means most Italian homeowners living in their own home pay zero IMU. However, if you own any other property — a second home, a holiday house, a rental apartment, agricultural land — IMU applies.
How IMU Is Calculated
The IMU calculation starts with the cadastral income (rendita catastale) of your property — a value assigned by the Agenzia del Territorio based on the property's type, size, and location. This is revalued by 5% and then multiplied by a coefficient that varies by property category:
- Residential properties (category A, except A/10): coefficient 160
- Offices (category A/10): coefficient 80
- Shops (category C/1): coefficient 55
- Warehouses and laboratories (categories C/2, C/6, C/7): coefficient 160
- Commercial properties (categories B): coefficient 140
The resulting figure is the IMU tax base (base imponibile). The municipal council sets the IMU rate (aliquota), which can range from 0.46% to 1.06% for standard properties, with a common rate of approximately 0.76% to 1.06% for second homes.
For a second home with a rendita catastale of €800: €800 × 1.05 × 160 = €134,400 tax base. At a rate of 1.06%, the annual IMU would be approximately €1,425. Use our IMU calculator to run the numbers for your property.
Payment Deadlines
IMU is paid in two instalments:
- 16 June: First instalment (acconto) — 50% of the previous year's IMU amount
- 16 December: Second instalment (saldo) — the balance based on the current year's rates (which municipalities finalise by late November)
Payment is made using the Modello F24 tax form, which you can file through your bank, online banking, or the Agenzia delle Entrate website. You will need the municipality's code and the correct tax code for IMU (3912 for standard residential IMU to the municipality, 3913 for agricultural IMU, etc.).
Special Cases and Exemptions
Rental properties: If you rent out a property, you still pay IMU as the owner. However, if you opt for the cedolare secca (flat rental tax) regime, you pay a flat 21% (or 10% for concordato contracts) on rental income instead of IRPEF, but IMU still applies separately. Use our rental income calculator to model the total tax burden.
Properties abroad: Italian tax residents who own property outside Italy may owe IVIE (Imposta sul Valore degli Immobili all'Estero), a tax of 1.06% on the value of foreign real estate. This is reported in the annual tax return.
Agricultural land: IMU applies to agricultural land but is exempt in mountain communities (comuni montani) and for professional farmers (coltivatori diretti or imprenditori agricoli professionali) working their own land.
Separated or divorced couples: When a couple separates, the home assigned to the spouse who keeps living there is treated as their primary residence and exempt from IMU, even if the other spouse is the legal owner.
IMU and Your Overall Tax Burden
For property investors, IMU is just one component of the total tax cost. A second home in Italy generates obligations across multiple taxes:
- IMU: typically €500 to €3,000 per year depending on location and property value
- IRPEF or cedolare secca on rental income
- TARI (waste tax): €200 to €600 per year
- Registration tax on the purchase (imposta di registro): 9% for second homes (or 2% for primary residences)
Factor all of these costs when evaluating Italian property investments. Our capital gains tax calculator can help you model the tax implications of selling, while the profit margin calculator helps assess rental investment returns.
Key Takeaways
- Your primary residence is exempt from IMU unless it is classified as a luxury property.
- Second homes, rental properties, and land are subject to IMU at rates of 0.46% to 1.06%.
- Payment is due in two instalments: 16 June (50%) and 16 December (balance).
- The calculation is based on cadastral income, not market value — resulting rates may seem low but are applied to an inflated tax base.
- Use the IMU calculator to estimate your liability.