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House Purchase
Buying a house as a couple: sharing expenses and legal rules.

Buying a house as a couple: sharing expenses and legal rules.

Are you buying a house as a couple? Learn how to register the down payment in the deed, split the loan installment, and legally protect your money.

07 jul 2026 • 3 min


Buying a property as a couple goes beyond simply sharing a bank installment. It requires a structured financial planning and legal protection for both parties. Documenting the financial contributions of each party and defining the ownership rules prevents asset complications in case of separation.

The legal registration of the initial capital

When a couple moves forward to acquire a property, it is very common for the initial available capital to be unequal. If one of the parties supports all or most of the down payment and initial taxes, this fact must be legally recorded. The notary can and should include in the public deed the exact origin of the funds, protecting the holder of the initial capital in case the property is sold or subject to division in the future.

Proportional division in the deed

The ownership of a home does not require an equal division. If one partner invests more money in the purchase phase or agrees to pay a higher portion of the bank loan, the ownership percentages recorded in the official document should reflect that same proportion. The house can be registered with different shares for each, ensuring equity and legal fairness in relation to the actual investment made by each party.

Written agreements and de facto unions

For couples who share their lives in de facto union, Portuguese law does not provide the automatic patrimonial protection that is guaranteed by marriage. The preparation of a written agreement signed by both parties is of vital importance. This particular document serves to clarify the exact division of conservation expenses, the payment of any structural work, and the settlement of annual taxes, preventing financial disputes.

Bank accounts and credit management

Managing monthly payments requires absolute organization and transparency. The most effective financial recommendation is to open a joint bank account exclusively for the expenses of the property, while keeping other personal accounts separate. The monthly amount each member transfers to this common account should be based on the proportion of their net salary, ensuring financial efforts are balanced and do not compromise either partner.

Evaluation of financing options

Analyzing the real impact of credit is the first step to healthy management of the couple's assets. Simulate with us to understand which financing solution best suits the economic capacity of both, ensuring approval of the safest market conditions.

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