When a relative dies, the emotional weight of the moment usually pushes the legal and tax aspects into the background. It is understandable, but costly. In Spain, the incorrect handling of an inheritance can mean losses of tens of thousands of euros that, with the right advice, would be perfectly avoidable.
These are the most frequent mistakes we see in practice, and how to avoid them.
The six most costly mistakes
Inheritance and Gift Tax has a filing deadline of six months from the death, extendable by a further six on express request. Exceeding it without having filed generates automatic surcharges ranging from 5% to 20% of the amount due, plus late-payment interest. In inheritances with significant assets, that penalty can be very substantial. And worst of all: many heirs do not realise the deadline has lapsed until the tax authorities notify them.
The additional six-month extension must be requested before the initial deadline lapses. It is a simple procedure, but if it is not done properly and in time, it is lost. Many families assume the agent or lawyer will handle it automatically, and that is not always the case. If there is any doubt about whether it has been requested, it must be verified.
Each autonomous community has its own regulation of Inheritance Tax, and many of them offer very significant reliefs for direct heirs (spouse, children, parents). In the Valencian Community, for example, there is a 99% relief for Group II relatives. Failing to apply it correctly through ignorance or an error in the settlement can mean paying taxes that are not due.
The valuation of the inherited assets, especially property, is one of the most delicate points. If they are valued below the cadastral reference value used by the tax authorities, the Administration can issue a supplementary assessment with interest. If they are valued above it, more tax than necessary is paid. The key is to know the minimum values accepted by the regional administration and to adjust the valuation with judgment.
It is more frequent than it seems: a person dies without having processed the inheritance of an earlier relative. The result is a chained inheritance, the earlier deceased's inheritance must be processed first in order to access the assets of the current one. Ignoring this causes blockages at the notary, problems at the registry and additional costs. The more time passes, the more complex the case becomes.
When the heirs cannot agree, whether over the distribution, the valuation of the assets or personal matters, the temptation is to go straight to court. It is the longest, most expensive route and the one that most damages family relationships. Before the court, there is always a table. A mediation process well handled by a professional with legal judgment can resolve in weeks what litigation drags out for years.
"Before the court, there is always a table. A well-structured agreement is worth more than years of proceedings, and it preserves something that litigation destroys: the family."
The deadline: the mistake that hurts the most
The six-month deadline passes faster than it seems. Between grief, the initial administrative procedures and the gathering of documentation, many families reach the fifth month without having made enough progress. If there is any doubt about whether you are in time, the first thing to do is request the extension. It is a free and simple procedure that grants six additional months.
What a complete inheritance service includes
Handling an inheritance correctly involves much more than filing the tax. The full process includes: obtaining the certificate of last wills and the death certificate, locating and valuing all the deceased's assets, checking for earlier pending inheritances, drafting and signing the deed of acceptance and award before a notary, settling and filing all the resulting taxes. Inheritance Tax, municipal capital gains tax (plusvalía), income tax where applicable, registering the property at the Land Registry and updating the cadastre.
Each of these steps has its own deadlines, its own documentary requirements and its own risks if carried out incorrectly. Integrated management by a specialist legal team eliminates those risks and, in most cases, significantly reduces the final tax burden.
When to turn to a specialist
The honest answer is: always. But especially in these cases: when there is property in the inheritance, when there is conflict between heirs, when there are earlier untreated inheritances, when the deadline is close to lapsing, when the deceased had debts or charges on the assets, and when there are heirs in different autonomous communities or countries.
The cost of specialist legal advice is always lower than the cost of the mistakes it prevents. And in many cases, the tax optimisation a professional achieves far exceeds their fees.
At Equus Capital, the legal team specialising in succession law manages the complete process, from opening the inheritance to the final award and registration, with direct and personalised attention in each case. And when there is conflict between heirs, we always prioritise the route of agreement: faster, cheaper and more humane.