You can meet every condition (main home, full amount, plenty of time) and still lose the exemption by not having claimed it. Article 41.4 of the IRPF Regulations requires the reinvestment, even one that has not yet been made, to be stated in the tax return for the year in which the gain arises. This guide explains how it is entered, what happens when the reinvestment then does not take place, and how to reply to the request for information that usually arrives two or three years later.
The return for the year of the sale
The sale is always declared, exempt or not. The capital gain on the sale of the property is entered in the section of the return for gains and losses from the transfer of assets, with its dates, its transfer value and its acquisition value. Then the reinvestment exemption is ticked, stating the amount already reinvested and, where applicable, the amount you undertake to reinvest within the two years.
Three different scenarios come out of that, and it is worth knowing which one you are in before you open the tax office's filing software:
| Scenario | What is entered | Effect on the tax due |
|---|---|---|
| You bought the new home before filing the return | The amount actually reinvested | The gain is not taxed, in full or proportionally |
| You have not bought yet, but will do so within the two years | The amount you undertake to reinvest | The same, with the undertaking still to be fulfilled |
| You have reinvested part and undertake to reinvest the rest | Both figures | Full exemption if the two together cover the amount obtained |
There is no letter to file, no schedule and no prior notice. The undertaking to reinvest is expressed by ticking the relevant box in the income tax return itself. Someone waiting "for the tax office to tell them something" is not undertaking anything: they are letting slip the moment at which the exemption is exercised.
What happens if you then do not reinvest
The Regulations anticipate the failure and do not treat it as fraud: they treat it as a correction. When one of the conditions is not met, the relevant part of the gain becomes taxable and is allocated to the year in which it arose, that is, to the year you sold, not to the year in which the failure comes to light.
The route is a supplementary self-assessment for the year of the sale, with the corresponding late-payment interest (intereses de demora). And it has its own deadline: it is filed in the period between the date on which the failure occurs and the end of the ordinary filing period for the tax year in which that failure occurs. In practice, someone who uses up the two years without reinvesting has the following income tax campaign in which to put things in order.
| Moment | What happens |
|---|---|
| Year 1, June | You sell. You declare the gain and undertake the reinvestment in the return you file in year 2 |
| Year 3, June | The two years run out without reinvestment: the failure occurs |
| Year 3, June to year 4, June | Window for filing the supplementary return for year 1 with late-payment interest |
| Afterwards | Out of time: the surcharge regime comes into play or, if a request has already been received, the penalty regime |
A supplementary return filed within its window carries late-payment interest. One filed afterwards, with no prior request from the tax office, carries the surcharge under article 27 of the Ley General Tributaria, Spain's General Tax Act. And one that arrives when the tax office has already knocked on the door loses that status and opens up the possibility of a penalty. The three situations cost different amounts, and we explain them in surcharge, interest and penalty and in what counts as a prior request.
Reinvesting less than you undertook
The failure does not have to be total. Someone who undertook to reinvest €240,000 and reinvested €180,000 has partly complied: they correct only the portion of the gain matching the €60,000 not reinvested, applying the same proportion rule that governs the partial exemption. The supplementary return does not bring the whole gain back into tax, only the slice that was left uncovered.
That calculation is worth doing properly, because it is exactly the one the tax authorities will redo. If the amount to reinvest was set wrongly at the time (for instance, without subtracting the outstanding loan) the failure may be apparent rather than real. It is worth going over the figures before correcting: they are in how the amount to reinvest is calculated.
The typical request, and what it asks for
These exemptions are checked late, because the tax authorities need to see whether the reinvestment actually happened. The usual form is a limited review procedure, the most common kind of desk audit, starting two or three years after the sale, which asks, with small variations, for the same things every time:
- The deed of sale of the home sold and the deed of purchase of the new one.
- The bank's certificate showing the outstanding principal of the loan paid off on the sale.
- Evidence of the costs subtracted from the transfer value and of those added to the acquisition value.
- Historical padrón certificates (registration on the municipal register of residents) for both homes.
- Utility bills showing consumption for both.
- Proof of the payments made to acquire the new one, with their dates.
The list is answered better when the file was already built. The standards of evidence and how to organise them are in how to prove it was your main home, and the discipline of answering what was asked and nothing more, in what to hand over, and above all what not to.
If the exemption was not claimed at the time
It is a common situation: the sale was declared, the gain was taxed and later the taxpayer discovers they were entitled to the exemption. The route is an application to correct the self-assessment with a refund of tax unduly paid, within the four-year limitation period we explain in limitation and what interrupts it.
Here it is important to be clear about the ground you are on. The tax authorities have at times maintained that the reinvestment exemption is a tax election under article 119.3 of the General Tax Act and that, as such, it cannot be changed outside the ordinary filing period. Against that, it has been argued successfully in some cases that it is not an election but the application of a tax relief whose conditions are either met or not, and is therefore open to correction. It is a live debate: we cannot tell you that you will win it, and it would be dishonest to do so. What we can tell you is that the argument exists, that it has been upheld, and that the case needs to be put properly from the first submission, because what is said there shapes the whole of what follows.
What the tax return already has filled in
In the income tax campaign for the year of the sale, the tax data the tax office provides usually includes the sale: the administration knows about the deed because notaries report transactions and because the Catastro, the land cadastre, records the change of ownership. What it does not know is your real acquisition value, the costs at the time or what you did with the money. Two frequent misunderstandings follow from that.
The first is believing that, because the sale "already shows up" in the tax data, everything has been said. It has not: the draft return may bring in the transfer value and leave the rest blank, and accepting the draft as it stands can mean paying tax on an inflated gain. The second is the reverse: believing that, since the exemption is going to apply, nothing needs touching. Wrong again: the exemption has to be ticked. Between the two, a good deal of money is lost every campaign, almost always through rushing on the last day.
If the review ends in an assessment
When the tax authorities do not accept the exemption they issue a proposed assessment, a period for submitting arguments (alegaciones) opens, and then the final assessment of the procedure arrives. It can be challenged by an appeal for reconsideration (recurso de reposición) or a claim before the economic- administrative tribunals, each with its own deadlines, and the penalty, if there is one, is dealt with in a separate file with its own set of reductions. The full route is in from the proposed assessment to the appeal, and the counting of deadlines, which has its catch with electronic notification, in how deadlines are really counted. If the resulting debt cannot be paid in one go, there is the option of deferral.
The summary that fits in five lines
- Always declare the sale, even if it is exempt.
- Tick the exemption and the undertaking in the return for the year of the sale. It is the step most often forgotten.
- If you do not reinvest, correct within your window with interest, before they call.
- If you reinvest less, correct only the proportional part.
- From day one, keep what you will be asked for two years later.
We handle both ends of the matter: the return done properly and the reply when the request arrives. We do not promise that a review will end well (that does not depend on us) but we do make sure the file arrives in order and with the argument in writing. Tell us about your case in the reinvestment form, or first read the page for this area and the guide to the four conditions.