Americans considering a second home in Sardinia need to budget for more than the asking price. An Italian property purchase can involve registration tax or VAT at closing, cadastral and mortgage taxes, notary and professional costs, followed by annual municipal property tax if the house is not an exempt principal residence. Owning the property can also create Italian and US tax-reporting consequences, particularly if it is rented out.

The first important point is that there is no special “Sardinia tax” for American buyers. The principal purchase taxes follow Italian national rules, while the annual IMU property-tax rate is set locally by the municipality where the house is located. That means two otherwise similar holiday homes in different Sardinian towns can have different annual IMU bills.

Taxes when buying from a private seller

For a residential property purchased without Italy’s prima casa tax benefit, the Italian Revenue Agency states that a purchase from a private individual is generally subject to a 9% registration tax, plus fixed mortgage and cadastral taxes of €50 each. The proportional registration tax has a statutory minimum of €1,000. citeturn0search1

In qualifying transactions between individuals, the buyer can ask for the prezzo-valore system, under which registration tax is calculated using the property's cadastral value rather than simply the agreed sale price. This is an important concept for foreign buyers because applying 9% directly to the advertised price can give a misleading estimate of the closing tax.

A notary should calculate the taxes for the specific transaction before completion. Italy’s notary is a public official who verifies and executes the transfer; the notary is not merely an optional closing service.

What if the seller charges VAT?

Some purchases, particularly certain sales by construction or development businesses, are subject to VAT instead of proportional registration tax. For a residential purchase without the prima casa benefit, the Revenue Agency lists 10% VAT for ordinary qualifying residential categories and 22% VAT for homes classified in the luxury cadastral categories A/1, A/8 and A/9. In VAT-taxable transactions, registration, mortgage and cadastral taxes are generally fixed at €200 each. citeturn0search1

Whether a sale is VAT-taxable depends on the seller and transaction, so buyers should not assume that every new-looking house has the same tax treatment as a resale from a private owner.

Do Americans qualify for Italy’s first-home tax break?

Calling a Sardinian property your “first house in Italy” is not enough to obtain prima casa benefits. Italian law attaches specific requirements concerning the property, other homes owned with the same benefit and, in ordinary cases, residence in the municipality. The Revenue Agency’s guidance describes an 18-month deadline for transferring residence to the municipality when that residence condition is being used. citeturn0search1

An American buying a holiday house while remaining resident in the United States should therefore budget conservatively on the basis that ordinary second-home taxation may apply unless an Italian notary or tax adviser confirms that all requirements for an exemption or benefit are met.

IMU: the annual tax second-home buyers should know

IMU, the Imposta Municipale Propria, is the central recurring property tax to understand. Ordinary principal residences are generally exempt from IMU, except luxury categories such as A/1, A/8 and A/9. A second home or holiday property, however, is normally subject to IMU. citeturn0search7

There is no single Sardinia-wide IMU percentage that can be quoted accurately for every buyer. Municipalities approve their own rates within the national framework, and the Italian Department of Finance maintains the official database of municipal IMU resolutions and rates. Its 2026 archive includes Sardinian municipalities and should be checked for the town where the property is located. citeturn0search0

The tax is not simply a percentage of the home's market price. Calculation starts from the cadastral income, which is revalued and multiplied according to the property's cadastral category before the applicable municipal rate is applied. Ownership percentage and the period of possession also matter.

For 2026, the Department of Finance notes that the first IMU instalment is due on 16 June under the statutory payment system, with the annual balance normally falling in December. Buyers completing partway through the year should have the notary or accountant clarify the amount attributable to their ownership period. citeturn0search0

What if the Sardinian house is rented?

A holiday home used only by its owner and a property generating rental income are different tax situations. The Italian Revenue Agency requires owners of Italian buildings with cadastral income to report them under the applicable income-tax rules, while IMU generally substitutes for IRPEF and related surcharges on qualifying non-rented properties. Rental income has its own tax treatment. citeturn0search7turn0search9

Short-term rentals also involve regulatory obligations beyond income tax, including rules that have changed substantially in recent years. Anyone buying specifically for Airbnb-style or other tourist rentals should have the intended use reviewed before purchase rather than assuming that a residential property can automatically be operated as planned.

Americans also have a US tax system to consider

US citizens generally remain within the US federal tax system even when they own assets or receive income abroad. Italy and the United States have a bilateral income-tax treaty intended to coordinate taxation and address double taxation, but it does not mean that owning an Italian property eliminates US filing responsibilities. Italy’s diplomatic network identifies the Italy-US income and capital-gains convention among the bilateral tax agreements currently relevant to the two countries. citeturn0search10

Rental income, a future sale, foreign financial accounts used to manage the property and the structure through which a property is held can all create separate questions. A US-Italy cross-border tax professional is particularly useful before renting or selling.

Can a US citizen legally buy property in Italy?

Italian law contains a general reciprocity principle for the civil rights of foreign nationals, subject to exceptions and international agreements. The Ministry of Foreign Affairs explains that reciprocity may not need to be checked in several situations, including where applicable bilateral investment agreements provide the relevant rights. citeturn0search6

In practice, a prospective American buyer should have the Italian notary verify the purchaser's exact legal status and any reciprocity issue for the transaction. This is preferable to relying on generic statements online that all foreigners either can or cannot buy Italian property.

Budget beyond the advertised price

A realistic purchase budget should include the applicable registration tax or VAT, fixed cadastral and mortgage taxes, notary fees, any real-estate agency commission and professional costs for technical and legal checks. After purchase, allow for IMU where applicable, local waste charges, condominium expenses where relevant, insurance, maintenance and utilities.

Before signing a binding offer, ask for the property's cadastral category and cadastral income, confirm whether the seller is a private individual or a VAT-taxable business, and request an estimate of both closing taxes and annual IMU. For an American buyer, it is also worth discussing the purchase with a professional familiar with both Italian and US taxation before money changes hands.

Sardinia can be a straightforward place to own a second home when the tax structure is understood in advance. The biggest mistake is treating “9% purchase tax” or an online IMU percentage as a universal calculation. The real numbers depend on the transaction, cadastral data, municipality and how the property will be used.