Sergio Navarro bought a flat in the San Blas district of Alicante in February 2019. He had it painted and a kitchen fitted and moved in in December that year. Out of sheer inertia, he stayed registered on the padrón (the town hall's register of residents) at his parents' home in Elche until March 2022, and his income tax returns for 2019 to 2021 gave the Elche address. In July 2026 he is selling the flat in San Blas to buy another with his partner. He asks whether the flat was his main home, because in the official records it only appears from 2022, and whether that prevents him from applying the reinvestment exemption.
The definition, piece by piece
The law on IRPF (Spanish personal income tax) does not define the main home for the reinvestment exemption; article 41 bis of the Regulations does, and it also applies to the exemption for people over 65. It has five elements:
- A building. The Regulations speak of "the building that constitutes their residence". It is a specific property, not an abstract address.
- Actual and permanent residence. Section 2 requires the home to be "lived in effectively and on a permanent basis by the taxpayer".
- Occupation within twelve months. That occupation must begin within the twelve months following the acquisition or the completion of the building work.
- Three continuous years. The residence must last at least three years, except in the case of death or other circumstances that necessarily require a change of address.
- Main home at the time of sale, or in the two previous years. For the purposes of the exemption, a main home is being sold if it was the main home at the time of the sale or had been until any day in the two years before the sale (section 3).
None of the five elements mentions the padrón, the tax address or any register. They are requirements of fact. The registers serve to prove them, but they do not replace them.
How Sergio's time limits are counted
Section 2 of article 41 bis adds a counting rule: when the home has been lived in within the twelve months following the acquisition, the three years are counted from the date of acquisition. Sergio bought in February 2019 and moved in in December, within the twelve months. His three-year period is counted from February 2019 and was completed in February 2022. He is selling in July 2026, while he is still living there.
In legal terms, Sergio meets the requirements. The problem is one of proof: during the first three years, which are precisely the ones that establish main home status, his official details say he lived in Elche.
What each document proves
| Evidence | What it proves | Its limit |
|---|---|---|
| Historical certificate of registration on the padrón | Where you declared to the town hall that you lived | It is a declaration; on its own it does not show actual occupation |
| Tax address in the returns | Where Hacienda placed you | It may be out of date, as in Sergio's case |
| Electricity, water and gas bills showing consumption | That someone lived in the home continuously | It does not say who; ideally they should be in your name |
| Utility and internet contracts | Account holder and start date | Without consumption, they prove little |
| Health centre and health card | Residence linked to an area | Depends on when it was changed |
| Children's school enrolment | Family residence in the area | Only if there are children |
| Letters from banks and public bodies | Where your administrative life was received | It is usually changed late |
| Card payments in local shops | Daily presence | Indirect evidence, useful as reinforcement |
No piece of evidence is decisive on its own, and none is useless. What convinces is a consistent whole. In Sergio's case, the electricity and water consumption from December 2019, the fibre broadband contract in his name and the delivery address for his purchases can make up for a padrón registration that was updated late.
When the padrón registration and the tax address point to another place during the key years, Hacienda, as the Spanish tax office is commonly called, has an indication on which to deny that the home was the main home. Rebutting it requires evidence of real life in the home, and the outcome depends on its quality. We do not guarantee that a file like this will succeed; we do guarantee that it will be presented in order and complete. While you are still living in the home, update your registration and tax address now: it does not fix the past, but it stops the problem from growing.
There is only one main home at a time
The concept is singular: "the" taxpayer's residence. Someone who alternates between a flat in the city and a house on the coast has only one main home, the one that constitutes their permanent residence, and the other is a second home for these purposes. The sale of the second home does not benefit from the exemption even if everything is reinvested in a home that will be the main one.
There is an intermediate situation provided for in the Regulations: someone who has a home provided because of their post or job, as happens with some civil servants or building caretakers, may acquire a home and not live in it; in that case, the twelve months to occupy it start to run from when they leave the post.
Annexes: garage and storage room
The exemption refers to the building that constitutes the residence. When the parking space or the storage room was bought together with the home, as an annex, and is sold with it in the same transaction, there are good arguments for treating it as part of the main home. When it was bought separately, in another deed and on another date, the question is more debatable and the exemption for that part is not assured. It is worth checking how they appear in the Land Registry and in the Cadastre before taking the treatment for granted.
Occupation within twelve months, and its exceptions
The twelve-month rule allows two exceptions, in addition to the one for a post or job: the death of the taxpayer and circumstances that necessarily prevent the home from being occupied, on the same terms as those required for the three-year period. Building work that drags on by your own choice is not one of those circumstances. If you bought and are taking more than a year to move in, check whether there is a cause that explains it and how to document it.
Which causes allow you to fall short of the three years is developed in I have not lived in the house for three years. The guide on how to prove your main home explains how to request historical certificates, and the one on fixing your tax address explains how to bring it up to date.
What Sergio has to gather
Before declaring the 2026 sale, Sergio should request the historical padrón certificate, download from the energy suppliers the history of bills showing consumption since 2019, gather the fibre contract, the health card if he changed it, and any other trace of his life in San Blas since December 2019. With all of this a file is prepared that is kept in case a request for information arrives, and that is not submitted with the return.
If you are in a similar situation, the reinvestment form lets you tell us the dates of purchase, move and registration so that we can see where the weak point is. The same definition applies to the new home: for the reinvestment to be valid, you will also have to move into it within twelve months and live there for three years, as shown in the two years: from when and until when.
Proving the main home is the basis of any reinvestment, and that is why it is the first thing we review in the Salama Tax service for selling your main home.