Business Management · Sources of Indian law and valid contracts

Essentials of a Valid Contract under the Indian Contract Act 1872

Updated 11 October 2026 · Fact-checked

Under the Indian Contract Act 1872, a contract is an agreement enforceable by law. An agreement forms when a valid offer is accepted. It becomes a valid contract when there is intention to create legal relations, consideration, capacity, free consent, a lawful object and certainty. Check each element in turn to test any case.

Understand Essentials of a Valid Contract

A contract under the Indian Contract Act 1872 is an agreement enforceable by law. This gives you the key idea: every contract is an agreement, but not every agreement is a contract. An agreement to meet a friend for dinner is an agreement. A court will not enforce it, so it is not a contract.

An agreement is formed when one party makes a proposal (the offer) and the other party accepts it. The person making the offer is the promisor or offeror. The person accepting is the promisee or acceptor. An offer shows willingness to do or not do something, with a view to getting the other's assent.

An agreement then needs further elements to be enforceable. These are: intention to create legal relations, lawful consideration, capacity of the parties, free consent, a lawful object, certainty of terms, possibility of performance, and compliance with any legal formality (such as writing or registration) where the law requires it. This page covers offer, acceptance, intention and certainty in depth. Consideration, capacity, free consent and legality have their own topic pages.

Think of it as a checklist. If any element is missing, the agreement may be void (not enforceable at all), voidable (enforceable only at the option of one party) or unenforceable. Your exam answer should name the missing element and state the result.

Rules on offer and acceptance matter in practice. An offer can be to a specific person or to the world at large. It must be communicated. A mere invitation to treat, such as a shop display or a price list, is not an offer. Acceptance must be absolute and unqualified, must match the terms of the offer, must be communicated to the offeror, and must be given while the offer is still open. Silence by the offeree is not acceptance.

Key rules to remember

Definition of a contract: Contract = Agreement + Enforceable by law; Every contract is an agreement, but not every agreement is a contract.
Definition of an agreement: Agreement = Offer (proposal) + Acceptance; Acceptance of a proposal makes it a promise. Every promise and set of promises forming the consideration for each other is an agreement.
Essentials checklist: Offer and acceptance + Intention to create legal relations + Consideration + Capacity + Free consent + Lawful object + Certainty + Possibility of performance + Legal formalities (where required); All must be present for a valid contract. Name the missing one in your answer.
Rules for a valid offer: Offer must be: communicated, capable of creating legal relations, certain, and made with a view to obtaining assent; An invitation to treat is not an offer. A general offer to the public can be accepted by anyone who performs the stated conditions.
Rules for valid acceptance: Acceptance must be: absolute, unqualified, communicated, in the prescribed or a reasonable mode, and given before the offer lapses or is revoked; A counter-offer rejects the original offer. Silence is not acceptance.
Status of agreements: Valid: all essentials present. Voidable: enforceable at the option of one party. Void: not enforceable by law.; Use these terms precisely in written answers.

How to solve Essentials of a Valid Contract questions

Use the same checklist for every fact-pattern question. Work from agreement to enforceability and apply each rule to the facts given.

1Read the facts and list who said what, in what order, and how it was communicated.
2Identify the offer. Ask whether it is a real offer or only an invitation to treat, and whether it was communicated and certain.
3Test acceptance. Check that it is absolute, unqualified, communicated, matches the offer and came before the offer lapsed or was revoked.
4Check intention to create legal relations. Social and domestic arrangements are usually not meant to be legal. Commercial arrangements usually are.
5Check certainty of terms. If the meaning is vague or cannot be made certain, the agreement is void.
6Check the remaining essentials: consideration, capacity, free consent, lawful object and any required formality.
7State the result: valid contract, voidable, void or no agreement at all. Name the rule you applied.
8Give a one-line conclusion that answers the exact question asked.

Quickest way: Offer, acceptance, intention, certainty: four-gate scan

When to use it: Use this for multiple-choice questions and short fact-pattern items where time is tight.

Gate 1: Is there a true offer, or only an invitation to treat such as a price tag, catalogue or advertisement asking for offers?
Gate 2: Is acceptance unconditional, matching and communicated? A change in terms means a counter-offer.
Gate 3: Would a reasonable person think the parties meant legal consequences? Family and social promises usually fail.
Gate 4: Are the terms certain or capable of being made certain? If not, the agreement is void.
If all four gates pass, quickly check consideration, capacity, free consent and lawful object. Then pick the option that matches.

Common mistakes in Essentials of a Valid Contract

Treating every agreement as a contract.
In daily speech the words are used as if they mean the same thing.
Fix: Write the definition: a contract is an agreement enforceable by law. Then test for enforceability using the checklist.
Calling a shop display, catalogue or price list an offer.
Students focus on the item being available for sale and forget that it merely invites offers.
Fix: Treat such displays as invitations to treat. The customer makes the offer and the seller accepts it, for example at the billing counter.
Treating a reply with changed terms as acceptance.
The reply looks positive, so students miss that it varies the terms.
Fix: Acceptance must be absolute and unqualified. A reply that changes terms is a counter-offer and ends the original offer.
Assuming silence amounts to acceptance.
Students think that not objecting means agreeing.
Fix: An offeror cannot impose acceptance by saying that silence will be taken as consent. The offeree must communicate acceptance in some way.
Ignoring intention to create legal relations in social or family settings.
Students focus on offer and acceptance and stop once they find both.
Fix: Always run the intention check. Social and domestic promises are usually not enforceable, while commercial dealings usually are, unless the parties clearly say otherwise.
Using the labels void and voidable loosely.
The two words sound similar and are often swapped.
Fix: Void means not enforceable at all. Voidable means valid until the party with the right chooses to cancel it. State which party has the option.

Worked examples

Example 1

A bookshop displays a textbook in its window with a price tag of ₹850. Meera walks in and says she will buy it for ₹850, but the owner says the tag was a printing error and refuses to sell. Does Meera have a claim for breach of contract?

Show the solution

Identify the display. A priced item in a shop window is an invitation to treat, not an offer.
Identify the offer. Meera's statement that she will buy at ₹850 is the offer.
Identify acceptance. The shop owner has not accepted. The refusal means no acceptance took place.
Conclude on agreement. Without acceptance there is no agreement, so there is no contract to breach.

Answer: No. The display was an invitation to treat. Meera made the offer and the owner was free to refuse it. No agreement was formed, so there is no contract and no breach.

Example 2

Rohan offers in writing to sell his car to Kabir for ₹4,00,000. Kabir replies, 'I accept, but I will pay ₹3,80,000.' Rohan does not respond. A week later Kabir says he will pay ₹4,00,000 and asks for the car. Is there a contract?

Show the solution

Identify the offer. Rohan's written offer to sell at ₹4,00,000 is a valid proposal.
Test Kabir's reply. It is called an acceptance, but it changes the price to ₹3,80,000. So it is not absolute and unqualified.
Classify the reply. It is a counter-offer. A counter-offer rejects the original offer, which therefore ends.
Test Kabir's later statement. Rohan's original offer no longer exists, so Kabir cannot accept it. His new statement is at best a fresh offer.
Check Rohan's position. Rohan has not accepted the fresh offer. Silence is not acceptance.

Answer: No contract has been formed. Kabir's first reply was a counter-offer that ended Rohan's offer. His later statement is a new offer, which Rohan has not accepted.

Exam tips

Write the definition of a contract first in any written answer. It earns marks and frames the rest of your reasoning.
In fact-pattern questions, take the parties and communications in time order. Most errors come from missing who spoke first.
Look for traps in multiple-choice options: invitations to treat, counter-offers disguised as acceptance, and silence treated as consent.
Always name the legal status of the outcome: valid, void or voidable. Just saying 'not a contract' loses marks.
If a section number is not certain in your memory, state the rule in plain words instead.

Practice questions from Sources of Indian law and valid contracts

Essentials of a Valid Contract in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Essentials of a Valid Contract: frequently asked questions

What is the difference between an agreement and a contract?

An agreement is an offer that has been accepted. A contract is an agreement that the law will enforce. An agreement without consideration, capacity, lawful object or intention to create legal relations may not become a contract.

What are the essentials of a valid contract in India?

You need offer and acceptance, intention to create legal relations, lawful consideration, competent parties, free consent, a lawful object, certainty of terms and possibility of performance. Some contracts also need writing or registration under the relevant law.

Is an advertisement an offer?

Usually an advertisement is an invitation to treat. However, an advertisement that promises a reward to anyone who performs a stated act can be a general offer, accepted by performing the act.

Can silence be acceptance of an offer?

Generally no. The offeree must signal acceptance by words or conduct. An offeror cannot bind the other party by saying that silence will count as acceptance.

Why does certainty of terms matter?

If the meaning of the agreement is not certain or cannot be made certain, the court cannot decide what the parties promised. Such an agreement is void.