IMU Explained: Italy Annual Property Tax and Who’s Exempt in 2026

If you own property in Italy, IMU is the tax you’ll deal with every year, and it’s also one of the most misunderstood, largely because whether you owe it at all depends heavily on how your specific property is used and classified. Here’s how it actually works in 2026.

What Is IMU?

IMU (Imposta Municipale Unica) is Italy’s main annual municipal property tax, established under Legislative Decree 23/2011 and searchable in full through Normattiva, levied on the ownership of buildings, building land and certain other real estate. It’s paid by the owner or by anyone holding a qualifying real right over the property, such as usufruct, use, habitation or surface rights, not by tenants.

The Primary Residence Exemption

The single most important rule to understand: IMU does not apply to your primary residence (abitazione principale), provided it isn’t classified under one of three luxury cadastral categories: A/1 (elegant apartments), A/8 (villas) or A/9 (castles and palaces of historic or artistic value). This exemption also generally covers directly related appurtenances, such as a garage or cellar, within specific legal limits.

For a property to count as your primary residence for IMU purposes, you generally need to both own it and be officially registered as a resident there. Owning a property without being registered as living in it doesn’t qualify for the exemption, which is a common trap for foreign owners who split time between countries without formally updating their residency registration.

Who Actually Pays IMU

This means most foreign buyers purchasing a holiday home or an investment property in Italy, rather than establishing it as their sole registered residence, should expect to pay IMU annually, even if they visit frequently and consider it their primary base emotionally.

How Much IMU Costs

IMU is calculated on cadastral value, not market value, which is often significantly lower than what a property would actually sell for. Rates generally range from about 0.46% to just over 1% of that cadastral value, with the exact rate set by the individual municipality within nationally defined limits.

Payment Deadlines

IMU is paid in two installments each year: an advance payment due on 16 June, generally corresponding to 50% of the prior year’s tax, and a balance payment due on 16 December, recalculated to reflect any rate changes the municipality has approved for the current year. Payment is made using the official F24 tax form.

What Changed for 2026: Municipal Rate Simplification

A Ministry of Economy and Finance decree issued in November 2025 introduced a more standardized national framework for how municipalities set their IMU rates. Previously, Italy’s roughly 7,900 municipalities operated under a patchwork of rate structures that had grown highly fragmented over time. From 2026, municipalities choose their rates from a more structured national table prepared by the Ministry, intended to simplify compliance without changing the underlying exemption rules or who owes the tax.

Co-Ownership, Inheritance and IMU

IMU is not jointly owed among co-owners. Each owner is responsible only for their proportional share, and a municipality cannot pursue one co-owner for the full amount if others fail to pay their portion. In inheritance situations, if a surviving spouse continues living in the property, their share is generally treated as a primary residence through their right of habitation, while other heirs who don’t live there remain liable for IMU on their respective shares.

Frequently Asked Questions

Do I pay IMU on my primary residence in Italy?

No, provided it isn’t classified as a luxury property under cadastral categories A/1, A/8 or A/9, and provided you’re both the owner and officially registered as resident there.

What happens if I own a second home in Italy but don’t live there full-time?

You’ll generally owe IMU on it, since the primary residence exemption only applies to a property that’s both owned and formally registered as your residence.

How is IMU calculated?

Based on the property’s cadastral value, not its market value, multiplied by a rate set by the municipality, generally in the range of 0.46% to a little over 1%.

When are IMU payments due?

Two installments annually: 16 June for the advance payment and 16 December for the balance, both paid using the F24 form.

Confirming Your Property’s Status

Because IMU exemption depends on both ownership and formal residence registration, and because cadastral category matters more than a property’s actual market character, confirm your specific property’s cadastral classification and your own registration status directly with your commercialista or the local municipality before assuming an exemption applies. This is particularly important for foreign buyers of historic or high-end properties, which are more likely to fall into one of the luxury cadastral categories that remain taxable regardless of residence status. The Agenzia delle Entrate publishes current F24 payment guidance and cadastral classification lookups that are worth checking directly for your specific property.