The essential elements of a contract, as governed by Philippine Civil Law, are fundamental requirements that must be present for a contract to be valid and legally enforceable. The Civil Code of the Philippines enumerates these elements and provides specific definitions and parameters for each. These elements fall into three primary categories: consent, object, and cause of obligation, which must coexist for a contract to be perfected.

1. Consent

Consent is a critical element of any contract, as it represents the agreement of the parties involved. For consent to be valid, the following requirements must be met:

Mutuality: Both parties must agree to the same terms without ambiguity. A “meeting of the minds” is necessary.
Free Will: Consent must be freely given without any form of coercion, undue influence, mistake, fraud, or intimidation. Any presence of these vices vitiates consent.
Capacity to Give Consent: Parties must have the legal capacity to enter into a contract. Under Philippine law, those lacking capacity include:
- Minors (except in specific cases, such as those involving necessities or where emancipated)
- Insane or demented persons
- Those under civil interdiction or other legal restrictions.
Requisites for Offers and Acceptance: An offer must be clear, definite, and communicated, while the acceptance must be absolute and made in a manner prescribed by law or the offer itself. Acceptance must mirror the terms of the offer; otherwise, it constitutes a counter-offer.

A defect in consent, such as an error on an essential term, fraud, undue influence, or intimidation, renders the contract voidable, meaning it is valid until annulled by the aggrieved party.

2. Object

The object of a contract refers to the subject matter over which the contract is created. For an object to meet the requirements under Philippine law, it must adhere to the following characteristics:

Determinate or Determinable: The object must be identifiable and specified in the contract. It must either be present (already existing) or capable of future existence and must be within commerce. A determinate object is one that is specifically identified, while a determinable object can be specified upon performance.
Legality: The object of the contract must be lawful. Objects that are illegal, impossible, or contrary to public policy render the contract void ab initio. Examples include contracts for illegal acts or purposes, such as contracts for illegal drugs, fraud, or activities against public morals.
Possibility: The object must be possible at the time the contract is created. Contracts over objects that are physically or legally impossible are considered void.

An object that fails to meet these requirements results in the contract being null and void.

3. Cause (Causa)

The cause of a contract, as provided in Article 1350 of the Civil Code, is the essential reason why each party enters into the contract. The cause is closely related to the purpose of the contract and varies according to the type of contract involved:

Onerous Contracts: The cause is the prestation or obligation promised by the other party. For example, in a sales contract, the cause is the payment of the purchase price for the item being sold.
Gratuitous Contracts: The cause is the liberality or generosity of the donor or giver. In donations, for example, the cause is the intention of the donor to give something without expecting anything in return.
Remuneratory Contracts: The cause is the service or benefit rendered by one party, with the other party agreeing to compensate. This is applicable in cases where services have already been performed and compensation is promised afterward.
Legality and Validity: The cause must be lawful and moral. An illicit cause, one contrary to law, morals, good customs, or public order, makes the contract void.

The cause must exist, and the Civil Code provides that if the cause is not stated in the contract, it is presumed to exist unless proven otherwise.

Void Contracts Due to Absence of Essential Elements

The absence of any essential element results in a void contract, which is legally considered non-existent and cannot be ratified or enforced in any court of law. Void contracts differ from voidable contracts, as voidable contracts possess all essential elements but may be annulled due to defects in one of those elements, often related to consent.

Void Contracts: Lack an essential element and are treated as if they never existed.
Voidable Contracts: Have all essential elements but are defective, often due to vitiated consent. These can be ratified unless the aggrieved party petitions for annulment within a prescribed period.

Effects and Legal Implications of Each Element

On Consent: Defective consent allows for the annulment of the contract at the instance of the party whose consent was vitiated. Should the consent be declared valid, the contract becomes enforceable.
On Object: The object must be legal and possible, or the contract is void. An indeterminate object renders a contract void if the indeterminacy cannot be remedied.
On Cause: A lawful and stated cause is presumed by the Civil Code; if proven otherwise, the contract is void. Courts may inquire into the cause if it is illicit, rendering the contract void and without binding effect.

The Principle of Autonomy of Contracts and Limitation of Contractual Freedom

The Civil Code upholds the autonomy of contracts (Article 1306), allowing parties the freedom to stipulate terms and conditions. However, this freedom is limited by the law, particularly concerning the essential elements, public order, and moral considerations. Courts may declare a contract void if it is shown to contradict law, morals, or public policy, regardless of the parties' intentions.

Conclusion

For a contract to be legally binding in the Philippines, it must contain the three essential elements of consent, object, and cause. Without these elements, or with defects in any of them, the contract may either be voidable or entirely void. Understanding these requirements ensures that agreements are enforceable and protects parties from potential legal disputes that arise from void or voidable contracts.