How do rental contracts and deposits work in Portugal in 2026?

The contrato de arrendamento should identify the landlord, tenant, property, permitted use, rent, payment method, start date, term, renewal, notice conditions, and any included furniture. It should also state the deposit and advance rent separately.

Check who pays utilities, condominium expenses, routine maintenance, and repairs. Record whether pets, home working, guests, or subletting are allowed. If a fiador signs, the guarantee wording and duration need careful review because liability may continue through renewals.

The Portuguese version controls unless the contract says otherwise. Obtain a proper explanation before signing clauses you do not understand.

Article 1076 of the Portuguese Civil Code allows advance rent when the parties agree in writing, for a period no longer than three months. Do not confuse this with the ordinary first rental payment or with the caução.

The same article allows the parties to secure their obligations through legally recognised forms. It does not give the caução the same simple three-month wording used for advance rent. This is why claims that every Portuguese deposit has one universal statutory month limit are unsafe.

If the requested security is unusually large, ask a Portuguese lawyer or tenants' association to review the current law and exact clause before payment. Every amount should appear in the lease and have a receipt or bank record.

Landlords must communicate leases, changes, and termination to the Tax Authority. Portal das Finanças provides the contract and electronic rent-receipt services. The Stamp Duty Code also allows tenants to communicate a lease when a landlord fails to do so, under the applicable process.

Check your Portal das Finanças account after signing. Keep electronic rent receipts and bank-transfer records. Cash without a clear receipt weakens proof of payment and can create problems when the lease is needed as address evidence.

Registration does not prove that every contract clause is fair. It proves the tax record and payment trail, which is only one part of tenant protection.

Attach an inventory with photographs, meter readings, keys, furniture, appliances, and existing damage. Both sides should receive the same dated version. Report defects in writing soon after move-in.

Before leaving, follow the notice clause, settle documented bills, clean the agreed items, and repeat the condition report. Ask the contract to explain when the caução will be returned and what evidence supports deductions.

Do not treat normal wear as identical to tenant damage. If the landlord retains money, request an itemised written explanation.