Buying an apartment or house in Italy requires more than agreeing a sale price: the final outlay depends heavily on tax rules and the way the property’s fiscal value is calculated. The central element is the registration tax, which is applied to the property’s Cadastral value. To get that amount
you start from the rendita catastale and apply standard adjustments and multipliers; understanding these steps will help you estimate whether the purchase will benefit from the first home regime or be treated as a second home.
Below you’ll find the mechanics explained, concrete numerical examples and the practical checks to do before the deed. The article also contrasts purchases from a private seller with purchases from a builder,
highlights the role of the mortgage substitute tax and explains which documents to request from the notary to compare scenarios clearly.
How the tax base is built: from rendita to cadastral value
Start with the rendita catastale, the cadastral income assigned by the tax office. This figure is usually revalued by 5% and then multiplied by a coefficient: commonly 110 for a first home and 120 for a second home. If you
combine the two steps into a single multiplier, you get the equivalent factors 115.5 for a first home and 126 for a second home. The resulting number is the cadastral value, the base used to compute the registration tax unless you opt out of the price-value mechanism.
Registration tax rates and fixed charges
When the sale is between private parties and the buyer qualifies for the first home benefit, the registration tax is 2% of the cadastral value (with a legal minimum of €1,000). For a second home the tax jumps to 9% (also with a €1,000 minimum). In both cases purchases between private parties usually carry fixed mortgage and cadastral taxes of €50 each.
Examples that show the real difference
Concrete numbers make the gap clear. With a rendita catastale of €800, the combined multiplier yields a cadastral value of €92,400 for a first home (800 × 115.5) and €100,800 for a second home (800 × 126). The registration tax becomes €1,848 for the first home (2%) and €9,072 for the second home (9%)—a difference of €7,224 on the same property just because of the tax regime.
Another example with a smaller rendita: at €600 the cadastral values are €69,300 (first) and €75,600 (second), producing registration taxes of €1,386 and €6,804 respectively. These examples emphasize how the multiplier and the rate together magnify the fiscal burden for a second home.
Buying from a builder versus from a private seller
When the seller is an enterprise and the operation is subject to VAT, the tax picture changes. Instead of a percentage-based registration tax, buyers typically pay VAT on the contract price (commonly 4% for first homes, 10% for ordinary new dwellings and up to 22% for luxury properties) and the registration, mortgage and cadastral taxes become fixed sums—often around €200 each. This makes the overall calculation dependent on the sale price and the applicable VAT rate rather than the cadastral conversion.
Mortgage substitute tax and notary costs
If you take a loan, the mortgage substitute tax on the amount drawn is another important cost: 0.25% for loans tied to first-home benefits and 2% for other cases. For a €150,000 mortgage that means €375 versus €3,000—a €2,625 delta. Notary fees are variable and additional, so always obtain a written estimate that itemizes the registration tax, fixed taxes, mortgage substitute tax and notary charges.
Practical checks before the deed
Always verify the property’s rendita catastale using the Agenzia delle Entrate portal (access with SPID or CIE). Confirm whether you can apply the price-value mechanism — a written request to the notary is required when buying from a private seller and this option reduces taxes by using the cadastral value instead of the agreed price. Check first-home eligibility criteria (no other houses in the same municipality, transfer of residence within 18 months, no luxury categories such as A/1, A/8 or A/9) and consider the consequences of selling within five years, which can trigger repayment of the benefit unless you buy another qualifying home within twelve months.
Finally, ask the notary for a detailed fee breakdown before signing: a clear written quote that lists the calculation of the cadastral value, the applied rate, fixed taxes and any mortgage-related charges will help you negotiate and plan your financing without last-minute surprises at the rogito.