Deductibility of home rent when part of the property is used for business activity

The Dirección General de Tributos (DGT) has issued a relevant ruling for self-employed professionals who carry out their economic activity in their own primary residence. The central issue revolves around whether it is possible to deduct from Personal Income Tax (IRPF) the percentage of the monthly rent expense that corresponds to the part of the property exclusively dedicated to professional practice.

What the DGT has ruled

The body has ruled that the partial allocation of divisible assets is possible. For this deduction to be valid, the part of the property allocated to the activity must be capable of separate and independent use from the rest of the home. If this condition of divisibility and independent use is met, the lease expense can be deducted proportionally to the part of the home used for the economic activity.

However, the resolution establishes strict requirements for this expense to be accepted by the Administration:

• There must be a correct temporal imputation of the expense.
• The amount must be recorded in the accounting or mandatory books.
• The expense must be properly justified.

What it means for you

If you are a self-employed professional and use a room in your home for work, this criterion allows you to reduce your IRPF taxable base by deducting a portion of the rent. However, the key lies in the nature of the space. It is not enough to work in a room; the area must allow for independent and separate use from the domestic environment for the partial allocation to be valid during an inspection.

What you should do

Given this possibility, it is fundamental to ensure that the part of the home dedicated to the activity meets the independence requirements demanded by the regulations. It is necessary to maintain documentation that supports the proportionality of the expense and to ensure that all accounting records faithfully reflect this allocation. Since the application of this criterion depends on the specific characteristics of each property and the activity, it is recommended to assess each situation individually to ensure compliance with Law 35/2006 and RD 439/2007.