In a review of the reinvestment exemption, the hard question is not how much you reinvested: that is in the deeds. The hard question is whether that house really was your main home, and there no deed will help you. It is proved through a set of indications that all point the same way, and article 41 bis of the IRPF Regulations says what has to be proved without saying how. This guide is the how.
What exactly the rule requires
Three elements, and all three must be present:
- It has to be a building intended as a residence. Not a shop unit, not a storeroom, not a plot with a structure that never obtained a certificate of habitability.
- It must have been your residence for a continuous period of at least three years. Continuous, not added up in fits and starts.
- You must have moved in actually and permanently within the twelve months following the purchase or the completion of the works.
"Actually and permanently" is the phrase that decides these files. It does not mean being there every day; it means that your everyday life takes place there. Someone who spends the working week in another city but has their family, their post, their doctor and their utilities in that house has a case; someone who uses it on holiday does not.
The pyramid of evidence
Not all documents carry the same weight. In practice they rank like this, from least to most convincing:
| Level | Document | What it really proves |
|---|---|---|
| Base | Historical certificate of registration on the padrón, the municipal register of residents | An administrative declaration. It is essential and it is the weakest indication: registering costs nothing and does not require living there |
| Base | Tax address declared in the tax census | Consistency with what the administration itself has on record |
| Medium | Electricity, water and gas bills showing consumption | That someone lived there. The consumption is what proves it, not whose name is on the contract |
| Medium | Fixed internet contract and its usage | The same, and it is hard to fabricate |
| High | Address on payslips, bank, insurance, health card, the children's school | That your administrative life was there, without having been set up for this purpose |
| High | Home insurance covering the property as a main residence | A statement you made to a third party, at the time and with no tax motive |
The padrón is an administrative register, not proof of actual residence, and the tax authorities treat it as one more indication. That said, not being registered forces you to make up for it with everything else and puts the taxpayer in an uncomfortable position from the first page. Anyone who can sort out the padrón before anything starts should do so; anyone who cannot should gather the rest with extra care. If your tax address is also out of date, it is worth correcting: we explain how in when the tax census does not back you up.
Utility consumption, which is where files are won
The electricity bill is the star document in these files because it is the only one that reflects behaviour rather than a declaration. What is looked at is not whose name is on the contract or the amount, but the month-by-month consumption profile. A home that is normally lived in shows consumption every month, with the seasonal pattern of the local climate; a home used occasionally has months at or near zero.
What is worth preparing, if the case calls for it, is a simple table with the kilowatt hours per month for the relevant years and the cubic metres of water. A table like that, together with the padrón and two or three high-level documents, is what turns a statement into a file.
| Month | Main home (kWh) | Second home (kWh) |
|---|---|---|
| January | 310 | 12 |
| April | 245 | 34 |
| August | 420 | 290 |
| November | 280 | 0 |
The right-hand column speaks for itself, and that is why cases of a coastal flat sold as a main home collapse before anyone gets round to discussing the amount reinvested.
The circumstances that release you from the three-year period
The Regulations provide that the home keeps its status as a main home even though three years have not passed when the taxpayer dies, or when other circumstances arise that necessarily require the change of address. The rule itself lists some of them and leaves the list open with a clause covering similar cases.
| Circumstance | How it is proved | Where it usually fails |
|---|---|---|
| Marriage | Family book (libro de familia) or a certificate from the Civil Registry | It rarely fails, if the dates fit |
| Marital separation | Judgment, decree or approved separation agreement | When there is only a de facto separation with no document |
| Job transfer | Letter from the employer, new contract, registration at the new workplace, payslips showing the new location | When the transfer was voluntary and no requirement is proved |
| Getting a first job or a better one | Contract, registration with Social Security, comparison of terms | When the improvement is not documented and stays a mere statement |
| Other similar justified circumstances | Whatever there is: medical reports, administrative decisions | Almost always, for lack of a document from the time |
This is where most files are lost. The rule speaks of circumstances that necessarily require the change of address, and the tax authorities read that strictly: the house getting too small, the couple wanting to live in another neighbourhood or a buying opportunity coming up are not, on their own, circumstances that require anything. Whether a particular case fits the similar-cases clause depends on the facts and how they are documented, and nobody can predict with certainty the position the tax authorities will take. What can be done is to build the argument with papers from the time, not with explanations put together afterwards.
Documents from the time are worth twice as much
There is an asymmetry worth understanding: a document created when the events happened, and for a different purpose, is worth far more than one created later in your own defence. A certificate issued by the town hall today about your padrón entry six years ago is valid, because it reflects a fact from back then. A statement signed today by a neighbour saying they used to see you come and go, much less so.
- Keep the home insurance for each year, with the main-residence status you declared to the insurer.
- Keep the notice of the job transfer if there was one, even if that year it seemed of no use to you.
- Download the consumption history before cancelling the utilities: afterwards the supplier is slow to provide it or no longer has it.
- Ask for the historical padrón certificate, not the current residence certificate. They are different documents and only the first covers the period.
The extras: garage, storeroom and garden
The main home is not just the flat. For income tax purposes, the ancillary parts count as part of it (storerooms, parking spaces up to a maximum of two, gardens, grounds, swimming pools and sports facilities) provided they are acquired together with the home. The word that decides is "together": the parking space bought from the neighbour three years later, under its own deed, falls outside, and its sale produces a gain that is not covered by the exemption.
This has practical consequences in sales made as a single lot. When the deed of sale brings together the home, two parking spaces and a storeroom acquired at different times, the price has to be split between the items and what goes under the exemption separated from what is taxed. If the deed does not break anything down, that split has to be supported with reasonable criteria (the valor catastral, the official cadastral value, or local market prices) and it is worth documenting on the same day, not when the question arrives.
The person who lives abroad and keeps the house
Someone who moves abroad and leaves the home in Spain has a double problem: they lose the padrón registration and they lose the consumption. If the home was their main home within the two years before the sale, the rule in article 41 bis may still save them, but the other side of the board has to be looked at as well, which is tax residence. If in the year of the sale you are no longer resident in Spain, the transaction does not go through the IRPF but through non-resident income tax (the IRNR), with its own rules, and that changes the whole approach: we cover it in selling a property as a non-resident. Residence status is proved with the certificates explained in the ordinary certificate and the treaty certificate.
How we put one of these files together
- A timeline with every date: purchase, actual move-in, padrón registration, move-out, sale.
- A table of monthly consumption for the three relevant years.
- A folder of high-level documents, with the address visible and the date visible.
- If there is an exceptional circumstance, the document from the time that supports it, and only after that the explanation.
- A written submission that tells the story in the order in which it happened, not in the order in which the papers turned up.
That order does not guarantee the outcome (no preparation does when someone else weighs the evidence) but it changes the conversation. Requests for information are answered better when the file was already built: that is the subject of what to hand over, and above all what not to.
We are tax lawyers, and this part, the evidence, is the one that really decides. If you have a sale done or about to happen and you are unsure whether you will be able to prove your main home, write to us through the reinvestment form and we will review it with whatever documents you have. The general page for this area is main home reinvestment.