In Brazilian law, concepts such as reinstatement and reinstatement effect play fundamental roles in the interpretation and application of legal norms. These concepts, although they may seem similar at first glance, have essential differences that directly affect legislative dynamics and the stability of the legal system.
The 1988 Federal Constitution, by establishing a detailed legislative process, ensures that laws are created and repealed through specific procedures.
In this context, the Law of Introduction to the Norms of Brazilian Law (LINDB), Decree-Law 4657/42, provides the parameters that guide the application of these concepts. Understanding these mechanisms is essential to ensure stability and coherence in the Brazilian normative system.
The Concept of Repristination in Brazilian Law
Definition and Application of Repristination
Repristination is a legal concept that refers to the reinstatement of a rule that was previously revoked by a subsequent rule, but this does not happen automatically.
In other words, a repealed law does not regain effect simply because the law that repealed it has been repealed, unless expressly provided otherwise.
Article 2, § 3 of the LINDB (Brazilian Law of Introduction to the Norms of Brazilian Law) establishes that "unless otherwise provided, a repealed law is not reinstated by the repealing law losing its validity." This means that, in the absence of an express clause, a repealed law will not regain effect simply because the law that repealed it has been repealed.
Flávio Tartuce points out that, even in the case of the repeal of the repealing law, the original rule (A) will not automatically become valid again. Reinstatement, therefore, depends on an explicit legal provision for the repealed rule to regain its validity.
Importance of Repristination
The principle of repristination is essential to guarantee legal certainty, preventing situations of normative confusion. In Brazil, the absence of tacit (or automatic) repristination prevents obsolete or inadequate laws from coming back into force without a deliberate legislative process. In this way, the stability of the norms is maintained, and the legal system aligns with contemporary realities and needs.
Express Repristination
Although automatic reinstatement is not permitted, Brazilian law allows for express reinstatement. That is, if a new law, when repealing the previous one, expressly states that the previously repealed law will come back into force, this provision will be valid and must be complied with.
This mechanism allows for planned and deliberate legislative intervention, where previously revoked rules can be restored in an orderly manner.
Example of Repristination
Suppose Law A was repealed by Law B. If Law C subsequently repeals Law B and expressly states that Law A will be restored, this restoration will be valid and legal.
Express reinstatement therefore allows the legislator to choose to reintroduce rules that, for some reason, have become relevant or necessary again, ensuring a conscious normative transition.
Restorative Effect
The repristinatory effect, in turn, is related to the declaration of unconstitutionality of norms by the Supreme Federal Court (STF). Unlike repristination, which occurs within the scope of civil law, the repristinatory effect is more common in the context of constitutional law.
When the Brazilian Supreme Court (STF) declares a law unconstitutional, this can lead to the restoration of the law that was revoked by that unconstitutional law. This process occurs because the law declared unconstitutional is considered null from its origin, meaning that it should never have produced effects in the legal world.
Example of a Restorative Effect
Let's consider again the example of Laws A, B, and C:
- Law A is repealed by Law B.
- Subsequently, Law B is declared unconstitutional by the Supreme Federal Court.
- In this case, Law A can be reinstated because Law B, upon being declared unconstitutional, is treated as if it never existed.
This restoration occurs because the decision of unconstitutionality, as a rule, has ex tunc effect , that is, it retroacts to the date on which the rule was enacted, nullifying its effects from then on.

Modulation of Effects by the Supreme Federal Court
Although the reinstatement effect normally has a retroactive character, the Supreme Federal Court (STF) may decide to modulate the effects of its decisions, as provided for in article 97 of the Federal Constitution.
The modulation of effects allows the Supreme Federal Court (STF) to determine that the decision of unconstitutionality will only have effects from the date of the judgment, instead of being retroactive.
This prerogative is exercised by the Supreme Federal Court (STF) with the aim of preserving legal stability and preventing harm to third parties acting in good faith who acted based on a rule subsequently declared unconstitutional.
Restorative Effect in a New Constitutional Order
The principle of reinstatement is not applicable when a new constitutional order is established and, subsequently, a third Constitution revokes the second.
In this scenario, the restoration of the effectiveness of sub-constitutional norms revoked by the second Constitution does not occur, even if these norms are not incompatible with the new constitutional order. This is justified by the principle of legal certainty, which aims to guarantee that only the norms in force at the time of the promulgation of the new Constitution are received.
However, there is a possibility that the new Constitution will expressly reinstate previous legislation. This situation occurs deliberately, always aiming to preserve the security of legal relations. An example of this is the National Tax Code (CTN), which was received by the 1988 Federal Constitution with the status of a Complementary Law.
Final Words
The distinction between reinstatement and the reinstatement effect is essential for a thorough understanding of how the Brazilian legal system works.
While repristination applies to the express reinstatement of repealed norms, the repristinatory effect arises in the context of constitutional review, restoring norms when a subsequent law is declared unconstitutional.
Furthermore, the restorative effect may be subject to new constitutional orders, highlighting the fundamental role of legal certainty and normative stability.
These concepts are of great importance to legal professionals, especially regarding their practical implications. The LINDB (Law of Introduction to the Norms of Brazilian Law), in regulating reinstatement, and the STF (Supreme Federal Court), in applying the reinstatement effect, play fundamental roles in preserving the coherence and stability of the Brazilian normative system.
These mechanisms ensure that current regulations are in line with constitutional principles and social demands.
The interaction between reinstatement and the reinstatement effect exemplifies the orderly evolution of Brazilian law, which respects both the legal text and the constitutional principles that guide the country.
The possibility of restoring norms, whether through a deliberate legislative process or a judicial decision, reflects the dynamism and adaptability of the Brazilian legal system to social and political changes.
Do you want to delve deeper into Constitutional Law?
If you are interested in topics such as reinstatement, the reinstatement effect, and constitutional review, follow our blog and continue your studies in the legal field.
Furthermore, IDP offers a Postgraduate Program in Constitutional Law, where you will have access to classes taught by leading legal professors and students from all over the country. This is the ideal opportunity for those seeking to update their knowledge and master the main aspects of Brazilian constitutionalism.

References
BRAZIL. Decree-Law No. 4.657, of September 4, 1942. Law of Introduction to the Norms of Brazilian Law. Available at: https://www.planalto.gov.br/ccivil_03/decreto-lei/del4657compilado.htm. Accessed on: August 31, 2024.
REGIONAL LABOR COURT OF THE 4TH REGION. Repristination and Repristinatory Effect. Judicial School. Published on: January 22, 2016. Available at: https://www.trt4.jus.br/portais/escola/modulos/noticias/417670#:~:text=O%20Efeito%20Repristinat%C3%B3rio%20significa%20que,surte%20efeitos%20no%20mundo%20jur%C3%ADdico. Accessed on: August 31, 2024.
MENDES, Gilmar Ferreira; BRANCO, Paulo Gustavo Gonet. Course on Constitutional Law. 19th ed. São Paulo: Saraiva Jur, 2024. E-book. (1 online resource). (IDP). ISBN 9786553629417. Available at: https://integrada.minhabiblioteca.com.br/books/9786553629417. Accessed on: September 10, 2024.
TARTUCE, Flávio. Manual of Civil Law, single volume. 14th ed. rev., updated, expanded. Rio de Janeiro: Método, 2024. E-book. (1 online resource). ISBN 9786559649884. Available at: https://integrada.minhabiblioteca.com.br/books/9786559649884. Accessed on: September 10, 2024.