Substitution of power

The substitution of power together with other resources such as sub-authorisation, stand as options within the specialty in notarial services in powers of our Notary Office in Barcelona. Therefore, we want to introduce you to what the substitution of power means, how to process it step by step, and the rest of the related matters such as options for renunciation and revocation.

What is substitution of power?

The substitution of power occurs when an attorney-in-fact who has been granted powers transfers them to a third party, either because they cannot or do not want to exercise them. During this procedure, the principal's authority to act and represent ceases. The person, therefore, who is going to replace the original attorney-in-fact is legally called the substitute and will be the one who, from that moment on, carries out the previous functions of the attorney-in-fact.

There are various reasons why an attorney-in-fact might need to process a substitution of power. These include possible incapacity, the inability to exercise the assumed role, or even the loss of the trust relationship with the principal.

The substitution of power avoids the need to revoke and create a new power of attorney, providing the parties involved with benefits in time and resources. Likewise, it is worth mentioning that the substitution can be processed both in the case of individuals and in commercial companies that require representation.

Let us remember that the granting of powers, which includes the substitution of power, is based on the deep trust between the principal and the substitute, since negligence or fraud can entail economic and patrimonial repercussions for the person granting the power. For this reason, we always recommend including clauses in the notarial document that specify the substitution or sub-power of attorney resources.

The substitution of civil power is regulated by the Civil Code between articles 1709 and 1721; in the Civil Code of Catalonia it is regulated in article 622-26; and in the commercial sphere in articles 261 and 296 of the Commercial Code.

Difference between substitution of power and sub-empowerment

If we compare substitution of power versus sub-power of attorney, substitution causes a transfer of power from the attorney-in-fact to the substitute, in which the attorney-in-fact, as mentioned, loses the powers of action and representation. The difference between substitution and sub-power of attorney lies in that in sub-power of attorney, the attorney-in-fact delegates all or some of the powers to a third party, but unlike substitution, does not detach from the power, but continues to act as attorney-in-fact.

Effects of power substitution

Therefore, processing a power of attorney substitution involves the transfer of power from the attorney-in-fact to the substitute, annulling the attorney-in-fact's status, and granting the substitute the power of representation of the principal. The figure of the substitute may legally represent their principal in commercial transactions, such as signing contracts or sales, during travel or absences, within the scope of commercial companies, due to health problems or incapacity, and even a delegation of specific powers.

Substitution of power for lawsuits or substitution of power from one lawyer to another

In this case, we are talking about the substitution of a person who represents another in lawsuits. Thus, in the case of a lawyer acting as a representative of a principal and who must be replaced, for example, by a member of their firm, they must legally initiate the steps for substitution or delegation of power.

How is a power of attorney substitution made?

For a substitution of civil power to occur, the principal must not have specified in the initial granting of powers that substitution of power is prohibited. Therefore, in the event that the principal cannot or does not wish to exercise their functions, the following scenarios may arise:

  • That the power contains a clause allowing substitution: in this case, if a substitute was specified as a particular person, one must act according to the will of the principal under their responsibility. If no person was specified to substitute, the attorney may designate one by granting a deed of substitution of power, without prejudice to the attorney's responsibility for the acts of the substitute.
  • That the power contains a clause where substitution is expressly prohibited: In this case, the power cannot be substituted, unless the principal subsequently ratifies it, since otherwise it would lack validity, or the principal grants a new power in favour of another person.
  • That the possibility of substitution of power was neither specified nor prohibited: If the power says nothing about the possibility of substituting the power, a distinction must be made between the power granted under the common law code or Catalan law:
    • Common civil code: In this case, the power may be substituted in favour of another person, without prejudice to the responsibility of the attorney.
    • Catalan civil code: Under Catalan law, if the power says nothing, substitution is not allowed. It would be treated as if it had been prohibited.

Substitution in the commercial field

Unlike in the civil sphere, in the commercial sphere, the rule is that substitution is prohibited unless it has been expressly permitted in the commercial power of attorney. Therefore, in the commercial sphere, substitution is not possible unless the power itself allows it.

The power of attorney substitution deed

If you are a proxy and need to carry out a power of attorney substitution deed, you must book an appointment at a Notary's office. Notaries are legal professionals who guarantee the legality and authenticity of transactions. You will be informed of the legal and financial risks and about any conflicts of interest that may arise depending on the context in which the substitution takes place, whether in private individuals or commercial companies.

To carry out what is sometimes known as a power of attorney substitution act, only the proxy's presence at the Notary's office will be necessary. The processing of a power of attorney substitution requires the signing at the notary of a power of attorney substitution deed. The proxy granting the substitution in favour of the substitute will sign, without the substitute needing to sign. After signing, the authorised copy of the power of attorney substitution will be given to the proxy to hand over to the appointed substitute.

Documentation for the deed of substitution of power in Spain

On the day you have arranged, you must provide the following documentation if you are an individual:

  • Valid identification document.
  • Authentic copy of the power of attorney that allows verification of the grantor's will regarding the possibility of substitution.

In the case of companies or legal entities, documentation proving the existence of the company and the power granted with substitution faculties will be required.

How much does the power of attorney substitution cost?

The price of notarial acts is regulated by the Government and complies with the regulatory legislation of the NOTARIAL FEE SCHEDULE (RD 1426/1989, of 17 November, regulating the Notaries' Fee Schedule).

In general, the exact price of a notarial document cannot be calculated until its specific content is known, that is, until it is signed, as there are many circumstances that can cause it to vary.

In the case of a power of attorney substitution deed, the cost varies depending on whether it concerns a natural person or a legal entity.

The number of copies requested of a document, the number of pages it contains, as well as possible changes or additions, also slightly affect the final price.

If you wish to receive a detailed quote, we invite you to contact us directly through the method that is most convenient for you. You can do so via the contact form on the main page of this website, through the contact section found in the footer of the website, by using the direct WhatsApp access at the bottom right of this page, by sending an email to bcn@jlanotarios.com, or by calling us on 93 159 17 62.

As a guideline, we can inform you that, according to the current regulatory legislation, the usual price in the case of substitution of commercial power of attorney, since more procedures and documentation of companies are required, is between €120 and €250. Meanwhile, the formalisation of a substitution deed of civil power of attorney granted by a natural person ranges between €60 and €90.

Other questions related to the Full Power of Attorney Replacement

It will be the substitute's option to renounce the substitution of power if they wish. They may cease to use the power as such, destroy their authorised copy, or execute a public deed of renunciation of the substitution of power. The public deed is especially useful to avoid problems after the renunciation.


The principal may revoke the substitution of power whenever they wish, rendering the use of the power ineffective. It is common for this to occur prematurely if trust has been broken with their attorney or if they do not agree with the substitute appointed by the original attorney, denying the option to ratify them after the substitution deed. To do so, the substitute must be formally notified of their dismissal from the position.


The duration of the substitution will depend on the duration that was established in the initial power of attorney delivery.


In the event that several attorneys-in-fact have been appointed, they may appoint their relevant substitutes provided that this has been contemplated.


JLA Notaries, notary for power of attorney substitution

At JLA Notarios we specialise in the preparation of the power of attorney substitution deed. In our Notary Office in Barcelona you will find a team of highly qualified and experienced Notaries to be able to grant power of attorney in Barcelona. We are experts in the applicable regulations and can offer you personalised advice tailored to your specific needs, always answering your questions and concerns.

At JLA Notarios we work empathetically and dynamically, applying new technologies in all procedures for your comfort and convenience. Our goal is to optimise the transaction times of your procedure and keep you informed of any developments that arise during the process. In addition, you can now also sign a power of attorney substitution online from anywhere in Spain, in the fastest and most convenient way via videoconference with our online notary.

Choose us as your Notary to receive excellent service quality. Get in touch with us for an initial consultation at our offices or grant powers of attorney online through digital signature. We will assist you throughout the entire process, resolving your doubts and managing your procedure efficiently. Book your first consultation now at JLA Notarios.

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