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26 May 2026

How to claim the 19% deduction on agency commissions for your main residence

Understand the conditions and paperwork needed to claim the 19% tax reduction on agency commissions when the property becomes your main residence

The journey from signing an offer to moving into a new home includes several costs beyond the purchase price. Among these, the agency commission is often one of the most discussed items. Tax authorities make an important distinction: the 19% deduction on intermediation fees is not a blanket benefit for all purchases. It is reserved for cases where the property is used as the main residence, a concept with specific fiscal implications that goes beyond the informal idea of a “primary home.” Understanding the rule and preparing proper paperwork reduces the risk of denial during tax filing.

In practical terms, the tax benefit is modest but conditional. The deduction applies on a capped amount and requires a formal paper trail: invoices, traceable payments and an act that records the mediator’s details. Buyers who expect the tax break should plan from the start to obtain correctly issued invoices and to ensure the notarial deed contains the necessary information. This article lays out the rule, the required documents, how the deduction is split among co-owners and scenarios where the benefit is explicitly denied.

What the rule says and how the cap works

Under current fiscal provisions, taxpayers can deduct 19% of the fees paid to professional intermediaries when the purchased unit becomes the main residence of the buyer or their family. The deduction is computed on a ceiling of €1,000 per tax year, producing a maximum theoretical benefit of €190. The key words here are use of the property and formal documentation: claiming the deduction without meeting both the substantive and formal requirements risks a future adjustment by the tax authority, such as the Italian Revenue Agency or similar bodies where applicable.

Eligibility criteria and required documentation

To access the deduction, taxpayers must present a set of consistent documents. Essential items include a proper invoice from the agency showing the service and amount, proof of payment through traceable methods (bank transfer, credit card, etc.), and the notarized purchase deed that lists the mediator’s identification and the commission paid. If these elements are missing, the deduction is typically denied. Keep in mind that the tax return where you claim the amount—often Model 730 in the Italian system—must reflect coherent amounts and ownership data.

Co-ownership and invoice allocation

When several people own the property, the deduction is split according to ownership shares. The invoice can be issued to a single individual, but the declared deductions and the actual payments recorded must match the shares reported on the deed and in tax declarations. For example, if two co-owners share equal halves, the deductible base is allocated proportionally. Maintain bank records and a copy of the deed together to prove the link between payment flows and ownership percentages.

When the deduction is not permitted and common pitfalls

The law expressly excludes several purchase types from the deduction. Transactions involving a second home, properties bought as an investment or for rental, purchases executed by companies and any unit that will not be the buyer’s habitual dwelling do not qualify. Additionally, if the definitive deed (the rogito) is not completed, previously claimed deductions can be disallowed. Buyers sometimes confuse the first home purchase benefits with this deduction: tax breaks at acquisition (first home benefits) are different from the ongoing deduction for intermediation fees linked to the actual use as a main residence.

Practical tips to avoid disputes

To reduce the chance of a challenge from the tax authority, request the agency invoice at the moment of payment and insist that the notarial act explicitly records the mediator’s details and the paid amount. Store the traceable payment receipts, the invoice and a copy of the deed in the same file. If doubts remain about eligibility or the correct tax form to use, seek advice from a qualified tax consultant or accountant before filing. This small investment prevents possible recoveries and fines later.

Final takeaway

The decisive element for claiming the 19% deduction on agency commissions is the actual use of the purchased unit as the buyer’s main residence and the presence of supporting documents. Although the monetary advantage is limited by the annual cap, complying with the formal requisites and keeping a complete paper trail gives you the best chance to secure the benefit without surprises during a tax audit.

Valentina Mariani
Author

Valentina Mariani

Valentina Mariani, from Verona, conceived a mini furniture collection after a staging at the Teatro Romano: today she produces style content for domestic spaces. In the newsroom she favors minimalist aesthetics and always carries a fabric sample that reflects her personal and professional color choices.