Contract Law in Brazil

Introduction

Contract law in Brazil (Direito Contratual) is codified primarily in the Brazilian Civil Code of 2002 (Law 10.406/2002), which replaced the 1916 Civil Code and introduced transformative changes aligned with contemporary civil law doctrine. The 2002 Code embraced social values such as the social function of contracts (função social do contrato), objective good faith (boa-fé objetiva), and contractual balance (equilíbrio contratual), moving away from the individualistic, liberal approach of the 1916 Code.

General Principles

Autonomy of Will and Its Limits

Brazilian contract law recognizes autonomy of will (autonomia da vontade) but subjects it to significant limitations. Article 421 of the Civil Code provides that contractual freedom is exercised within the limits of the social function of the contract, a principle that allows courts to intervene in contractual relations to prevent abuse of rights and ensure social justice.

The principle of binding force of contracts (pacta sunt servanda) remains relevant but is moderated by mechanisms such as the theory of unforeseen circumstances (teoria da imprevisão) and excessive burden (onerosidade excessiva), which permit contractual revision when supervening events fundamentally alter the contractual equilibrium.

Objective Good Faith

Article 422 establishes objective good faith (boa-fé objetiva) as a guiding principle throughout the life of the contract — from negotiation to performance. Good faith imposes duties of conduct (deveres anexos or deveres laterais) beyond the express contractual terms, including:

• Duty of information (dever de informação): Each party must provide relevant information to the other
• Duty of loyalty (dever de lealdade): Parties must act honestly and cooperatively
• Duty of care (dever de cuidado): Parties must exercise reasonable care in performance
• Duty of protection (dever de proteção): Parties must protect the other’s person and property

The violation of objective good faith may give rise to pre-contractual liability (responsabilidade pré-contratual), contractual liability, or post-contractual liability (responsabilidade pós-contratual).

Formation of Contracts

Essential Requirements

Article 104 of the Civil Code establishes three essential requirements for contract validity: (i) capable parties (agente capaz); (ii) lawful, possible, and determinate object (objeto lícito, possível, determinado ou determinável); and (iii) prescribed form or non-prohibited form (forma prescrita ou não defesa em lei).

Offer and Acceptance

Offer (proposta or oferta) must be serious, complete, and definite. Under Article 427, the offeror is bound by the offer unless contrary intent is expressed. Acceptance (aceitação) must be communicated within the time specified or, absent specification, within a reasonable time.

Contractual Defects

Vícios Redibitórios

Vícios redibitórios (Articles 441-446) are hidden defects that render the object unfit for its intended use or diminish its value. The acquirer may demand repair, reduction of the price, or rescission of the contract within a prescriptive period of 30 days to one year depending on whether the object is movable or immovable.

Evicção

Evicção (Articles 447-457) refers to the loss of possession or ownership of an acquired asset due to a third-party right predating the acquisition. The evicted acquirer is entitled to full indemnification from the transferor, including the purchase price, damages, and costs.

Lesão

Lesão (Article 157) is a contractual defect arising from disproportionate advantage (vantagem desproporcional) obtained by exploiting another’s inexperience, need, or impulsiveness. Unlike the 1916 Code, which required proof of intent, the 2002 Code adopts an objective approach. The disadvantaged party may seek contract annulment or renegotiation.

State of Peril

State of peril (estado de perigo, Article 156) occurs when a party assumes an excessively onerous obligation to save themselves or a close person from a known grave danger, provided the other party knew of the peril.

Performance and Breach

Performance

Contracts must be performed in good faith (Article 422). The obligor who performs in full and in the manner agreed is discharged from liability. Tender of performance (oferta de pagamento) followed by deposit in court or banking deposit (consignação em pagamento) discharges the obligor if the obligee refuses to accept payment without just cause.

Breach and Remedies

Positive breach of contract (inadimplemento contratual) occurs when the obligor fails to perform or performs defectively. Default (mora) arises without need of notice if performance is subject to a deadline; otherwise, formal notice (interpelação) is required.

Upon breach, the injured party may: (i) demand specific performance with judicial enforcement (execução específica) of obligations; (ii) seek rescission (rescisão) with damages; or (iii) assert exception of non-performance (exceção de contrato não cumprido).

Theory of Unforeseeability

Articles 478-480 codify the theory of unforeseeability (teoria da imprevisão) and excessive burden (onerosidade excessiva). When an extraordinary and unforeseeable event renders contractual performance excessively onerous for one party while benefiting the other, the disadvantaged party may seek contract revision or rescission. Courts have applied this doctrine in cases of currency devaluation, economic crises, and the COVID-19 pandemic.

Specific Contracts

The Civil Code regulates numerous specific contracts, including: purchase and sale (compra e venda), exchange (troca), donation (doação), loan for use (comodato), loan for consumption (mútuo), mandate (mandato), deposit (depósito), lease (locação), loan for services (prestação de serviços), construction contract (empreitada), and insurance (seguro). The Law of Leases (Law 8.245/1991) specifically governs urban property leases and has been subject to frequent amendment.

Conclusion

Brazilian contract law reflects a sophisticated balance between contractual freedom and social solidarity. The Civil Code of 2002 modernized the law by incorporating principles of objective good faith, social function, and contractual balance, empowering courts to mitigate the harshness of strict formalism. The interplay between the Civil Code and the Consumer Protection Code ensures robust protection for weaker parties, while commercial contracts operate within a framework that increasingly approximates international standards.