In short
Chapter I of Title II of Book Six settles two different questions. The first is who has capacity to inherit. Article 1554 recognises it in the person born or conceived at the moment the succession is opened: the word “conceived” is in the text, so someone not yet born when the decedent dies may have successory capacity. Article 1555 does the same for juridical persons: the one that exists at the moment of opening has it, and besides, the testator may create or order the creation of a juridical person so that it is constituted after the succession is opened; that entity has capacity from when it has personality, but the effects of its acceptance are retroactive to the moment of the delación. The second question is who, having capacity, loses it. Article 1556 lists six causes of unworthiness, and it is worth noting which demand a criminal conviction and which do not. These do not: abandoning or physically or psychologically mistreating the decedent; failing for three consecutive or six alternate months to comply with the obligation to support the decedent imposed administratively or judicially; inducing or preventing, by deceit, intimidation, fraud or violence, the decedent from granting, revoking or modifying their will — or taking advantage of those facts while knowing them; and destroying, hiding or altering the will. Two do: having been convicted of attempting against the life of the decedent, their spouse, their descendants or ascendants, the executor, or another called to the inheritance whose death favours the unworthy one; and having been convicted of falsely accusing or denouncing the decedent of an offence carrying a serious penalty. Article 1557 says when all this is measured: the qualification is attended to at the moment of the delación. And Article 1558 sets two limits people do not expect. One: only the persons favoured by the declaration may invoke it. The other: once declared, its effects are retroactive to the moment of the delación, and unworthiness deprives the unworthy person of the inheritance or the legacy and, where applicable, of the condition of forced heir.
What is it?
They are Articles 1554 to 1558 of the Civil Code of 2020: who has capacity to inherit, the six causes of unworthiness, when it is qualified and who may invoke it.
Who can do it?
Whoever is called to an inheritance in Puerto Rico, and whoever believes another person called should not receive it because of their conduct toward the decedent.
Requirements
- The person born or conceived at the moment the succession is opened has successory capacity.Verified against the official source
- The causes of unworthiness are six and are in Article 1556.Verified against the official source
- The qualification of unworthiness is attended to at the moment of the delación.Verified against the official source
- Only the persons favoured by the declaration of unworthiness may invoke it.Verified against the official source
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Step by step
Step 1: Who may inherit: the natural person
Article 1554: the person born or conceived at the moment the succession is opened has successory capacity. “Or conceived” is in the text.
Step 2: Who may inherit: the juridical person
Article 1555, first paragraph: the one that exists at the moment the succession is opened.
Step 3: An entity that does not yet exist
Second paragraph of 1555: the testator may create or order the creation of a juridical person so that it is constituted after the opening. It has capacity from when it has personality, but the effects of its acceptance are retroactive to the moment of the delación.
Step 4: Cause (a): abandonment or mistreatment
Unworthy is the person who abandons or physically or psychologically mistreats the decedent. This cause requires no criminal conviction.
Step 5: Cause (b): attempting against life, with a conviction
The person convicted of having attempted against the life of the decedent, their spouse, their descendants or ascendants, the executor, or another called to the inheritance whose death favours the unworthy one in the succession. Here the Code demands a conviction.
Step 6: Cause (c): false denunciation, with a conviction
The person convicted of falsely accusing or denouncing the decedent of committing an offence that carries a serious penalty. It also demands a conviction. The Code does not define here what a serious penalty is.
Step 7: Cause (d): failing to support the decedent
The person who fails for three consecutive or six alternate months to comply with the obligation, imposed administratively or judicially, to support the decedent. Note the two counts: three in a row or six scattered.
Step 8: Cause (e): bending the testator’s will
The person who, by deceit, intimidation, fraud or violence induces or prevents the decedent from granting, revoking or modifying their will; or the one who, knowing these facts, uses them for their benefit. The second half reaches whoever did nothing but took advantage knowingly.
Step 9: Cause (f): destroying, hiding or altering the will
The person who destroys, hides or alters the decedent’s will. Hiding is enough: it need not be destroyed.
Step 10: When it is measured
Article 1557: the qualification of unworthiness is attended to at the moment of the delación. The Code uses that word here without defining it, and this guide does not define it for it.
Step 11: Who may invoke it
Article 1558: only the persons favoured by the declaration of unworthiness. It is not an action open to anyone.
Step 12: What the unworthy person loses
The same article: the effects are retroactive to the moment of the delación, and the declared unworthiness deprives the person of the inheritance or the legacy and, where applicable, of the condition of forced heir. That last mention matters: it reaches even someone who would have a forced share.
Step 13: What this chapter does not settle here
It does not say before whom or how the declaration is requested, does not define delación or serious penalty, and does not say what happens to the excluded person’s share. The duty to restore, the rehabilitation of the unworthy person and the four-year lapse are in Articles 1559 to 1561, with their own guide on this site.
Where to do it
These articles describe no procedure before any agency: they fix who may inherit and why that right is lost. The Code does not say in these five articles before whom the declaration of unworthiness is requested, and this guide does not invent it.
How long it takes
What to do if something goes wrong
If you believe another person called to the inheritance incurred one of the six causes, look first at which one: two of them — the attempt against life and the false denunciation — require the person to be convicted, and the other four do not. If the decedent knew of the cause and still made dispositions in that person’s favour, or reconciled with or pardoned them, the unworthiness produces no effects: that is Article 1560, in the restitution and rehabilitation guide. And if the unworthy person has held the goods for some time, check the four-year lapse in Article 1561. This chapter does not define delación, does not define what a serious penalty is, and does not say before whom the action is filed. MiPRFácil does not represent anyone in court and gives no legal advice.
Common mistakes
- Believing every cause of unworthiness requires a criminal conviction: only two of the six do.
- Thinking a baby conceived but unborn when the decedent dies is left out: Article 1554 says “born or conceived”.
- Assuming anyone may request the declaration of unworthiness: only whoever is favoured by it.
- Counting only consecutive months in the support cause: it is three consecutive or six alternate.
- Believing hiding the will does not count if it was not destroyed: paragraph (f) names destroying, hiding or altering.
- Thinking whoever merely took advantage of another’s coercion is safe: paragraph (e) reaches whoever, knowing the facts, uses them for their benefit.
- Assuming a forced heir cannot be excluded: Article 1558 also strips the condition of forced heir.
- Measuring unworthiness at the moment of death: Article 1557 qualifies it at the moment of the delación.
Frequently asked questions
Can someone not yet born inherit?
Article 1554 says the person born or conceived at the moment the succession is opened has successory capacity.
Does whoever mistreated the decedent lose the inheritance?
Paragraph (a) of Article 1556 declares unworthy the person who abandons or physically or psychologically mistreats the decedent. That paragraph requires no criminal conviction.
And whoever did not pay the decedent’s support?
Paragraph (d) declares unworthy the person who fails for three consecutive or six alternate months to comply with the obligation, imposed administratively or judicially, to support the decedent.
Can a neighbour ask that an heir be declared unworthy?
Article 1558 says only the persons favoured by the declaration of unworthiness may invoke it.
Official sources
These are the government pages this guide is based on.
- Poder Judicial de Puerto Rico
Poder Judicial
bvirtualogp.pr.gov
Last verified
September 10, 2026
MiPRFácil is an independent informational website and is not affiliated with, endorsed by, or operated by the Government of Puerto Rico or any government agency.
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