In short
Some wills leave something and charge something: the house, with a duty to care for someone; the money, with a duty to devote it to a purpose. Article 1685 gives it a name and, above all, a category: in the modal institution the testator imposes on the instituted person some obligation, including that of devoting the transmitted good to a special purpose, and this disposition is not understood as a condition but as a modal obligation, except when the testator’s will turns out to be otherwise. That default rule is the whole practical difference. A condition would make you wait; a modal obligation does not. Article 1686 says so plainly: the right of the heir or legatee under a modal obligation is immediate, and transmits to their heirs, who must bond performance of the obligation and the return of what was received, with its fruits, should they breach. You receive now, and you owe, under bond. The testator may dispense with that bond, and may also dispense with the return of what was received with its fruits and interest: two separate pardons, not to be confused. Article 1687 deals with what happens when the charge goes wrong, and covers less than it seems. If the obligation cannot take effect in the terms the testator ordered, and there was no fault of the heir, it must be performed in other analogous terms conforming to their will. If the person interested in performance prevents it, without fault of the heir, the obligation is considered performed. And any person interested in the inheritance or the legacy may request performance; if it affects the public interest, the competent authority may request it. What none of the three paragraphs resolves is the plain case: the heir who simply does not perform. We state that gap; we do not fill it.
What is it?
They are Articles 1685, 1686 and 1687 of the Civil Code of 2020: what a modal institution is, why it is not a condition, from when what was left to you is yours, under what bond, and who may demand you perform.
Who can do it?
Any heir or legatee on whom a will has imposed a charge, and any person interested in the inheritance or legacy who wants to demand performance.
Requirements
- In the modal institution the testator imposes on the instituted person some obligation, including devoting the good to a special purpose.Verified against the official source
- It is not understood as a condition but as a modal obligation, except when the testator’s will turns out to be otherwise.Verified against the official source
- The right of the heir or legatee under a modal obligation is immediate and transmits to their heirs.Verified against the official source
- Those heirs must bond performance and the return of what was received with its fruits should they breach.Verified against the official source
- Any person interested in the inheritance or the legacy may request performance of the modal obligation.Verified against the official source
Documents you need
Cost
Step by step
Step 1: What a modal institution is
Article 1685: the testator leaves you something and imposes some obligation, which may be devoting the good to a special purpose.
Step 2: By default it is not a condition
The same article: it is not understood as a condition but as a modal obligation, except when the testator’s will turns out otherwise.
Step 3: That is why you do not wait
Article 1686: the right is immediate. You receive now and owe afterwards.
Step 4: And it transmits to your heirs
The same article, with the burden attached: they must bond performance and the return with its fruits should they breach.
Step 5: The testator may forgive two things
The bond, and additionally the return of what was received with its fruits and interest. Two separate dispensations.
Step 6: If it cannot be done as asked
Article 1687: without your fault, it must be performed in other analogous terms conforming to their will.
Step 7: If someone prevents you
When the person interested in performance prevents it, without your fault, the obligation is considered performed.
Step 8: Who may demand it of you
Any person interested in the inheritance or the legacy. And if it affects the public interest, the competent authority, which the article does not name.
Where to do it
These articles describe no procedure before any agency. The Code does not say here who the “competent authority” is that may demand performance when the obligation affects the public interest, nor what makes someone an “interested person”, nor before which forum it is requested, nor within what deadline. And it does not resolve the plain case of the heir who simply does not perform: Article 1687 addresses impossibility and obstruction by others, not culpable refusal. None of those gaps is filled here.
How long it takes
What to do if something goes wrong
If the will leaves you something “with the obligation to” do or devote something, the first thing is not to treat it as a condition. Article 1685 says that by default it is a modal obligation, and it stops being one only when the testator’s will turns out otherwise. The practical consequence is in Article 1686: your right is immediate. You do not have to perform first to receive later; you receive, and you owe, bonding performance and the return of what you received with its fruits should you breach. Check whether the testator dispensed you, because they may dispense with the bond and, separately, with having to return anything. If the charge became impossible in the terms they ordered and it was not your fault, Article 1687 does not free you: it orders you to perform in other analogous terms conforming to their will. If the very person interested in your performing is the one who prevented it, and you were not at fault, the obligation is considered performed. And if you are the one who wants someone else to perform, the same article gives you standing if you are a person interested in the inheritance or legacy. Three things the Code does not say and this guide does not invent: who the competent authority is when the charge affects the public interest, what makes someone an interested person, and what happens when the heir simply does not perform and is at fault. MiPRFácil does not represent anyone in court and gives no legal advice.
Common mistakes
- Treating the charge as a condition: Article 1685 reads it as a modal obligation unless the testator’s will is otherwise.
- Believing you must perform before receiving: Article 1686 makes the right immediate.
- Thinking the charge dies with you: the same article transmits the right, and the burden, to your heirs.
- Confusing the two dispensations: one is from the bond, the other from returning what was received with fruits and interest.
- Considering yourself free when the charge becomes impossible: Article 1687 orders performance in analogous terms.
- Applying that rule when you are at fault: the article requires no fault of the heir.
- Believing only the beneficiary may demand performance: any interested person may request it.
- Looking in the article for the competent authority’s name: it mentions it and does not give it.
Frequently asked questions
Is a will’s charge a condition?
Article 1685 says it is not understood as a condition but as a modal obligation, except when the testator’s will turns out otherwise.
Must I perform before receiving?
No. Article 1686 says the right of the heir or legatee under a modal obligation is immediate.
What if it cannot be done as the testator asked?
Article 1687 orders performance in other analogous terms conforming to their will, if there was no fault of the heir or legatee.
Who may demand performance?
Any person interested in the inheritance or the legacy; and if it affects the public interest, the competent authority, which the article does not name.
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 12, 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.
MiPRFácil does not submit applications on your behalf.
Was this guide helpful?
Did you find out-of-date information?
An impossible or illegal condition is deleted and the inheritance stays
Article 1676 of the Civil Code of 2020 considers it not written: the condition falls, not the designation of heir or legatee.
Until the date arrives someone else inherits, and touches nothing without inventory and bond
Article 1683 of the Civil Code of 2020 calls the legitimate heir meanwhile, and requires inventory and bond with the instituted person taking part.
A will that names no heirs is still valid
Article 1660 of the Civil Code of 2020 says so in one sentence, and 1663 splits in equal parts when no shares were set.
Someone else may choose who, but never how much or whether it happens
Article 1672 of the Civil Code of 2020 allows entrusting the choice; 1673 forbids leaving the gift’s subsistence and amount to a third party.
How to make a will in Puerto Rico
The 2020 Civil Code’s kinds of will, who may execute one, and the rule that changed: with forced heirs you may freely dispose of half.
Standing surety: never more than the debtor, but costs are included
Article 1475 bars the surety from owing more than the debtor, and 1474 folds accessories, costs and fees into the suretyship.