Contract of Sale under Section 4 of the Sale of Goods Act, 1930: Sale and Agreement to Sell, Present and Future Transfer of Ownership, When an Agreement Becomes a Sale, and Absolute and Conditional Contracts

Section 4 uses contract of sale as an umbrella term covering two different things. A sale transfers ownership at once; an agreement to sell promises to transfer it later, or on a condition. Both are contracts of sale, both are governed by the Act, and an agreement to sell turns into a sale automatically when its time comes or its condition is met. But until then the difference decides almost everything that matters when a transaction goes wrong: who bears the loss if the goods are destroyed, whether the seller can sue for the price, and what happens if the buyer becomes insolvent. The essential elements of a contract of sale, and its distinction from other transactions, are dealt with in separate notes.

The two limbs of Section 4, what turns one into the other, and why the difference matters

1. The Section

Section 4, Sale of Goods Act, 1930

(1) A contract of sale of goods is a contract whereby the seller transfers or agrees to transfer the property in goods to the buyer for a price. There may be a contract of sale between one part-owner and another.

(2) A contract of sale may be absolute or conditional.

(3) Where under a contract of sale the property in the goods is transferred from the seller to the buyer, the contract is called a sale, but where the transfer of the property in the goods is to take place at a future time or subject to some condition thereafter to be fulfilled, the contract is called an agreement to sell.

(4) An agreement to sell becomes a sale when the time elapses or the conditions are fulfilled subject to which the property in the goods is to be transferred.

2. Sale: A Present Transfer of Ownership

A sale is both a contract and a conveyance. It creates obligations, and it also transfers ownership. Once property has passed, the buyer owns the goods even if the seller still has them and even if the price has not been paid. Whether property passes at once depends on the parties' intention under Section 19, and for specific goods in a deliverable state under an unconditional contract, Section 20 presumes that it passes when the contract is made.

📖 Tarling v. Baxter, (1827) 6 B & C 360

Facts: A stack of hay was sold for a price payable at a later date, on terms that the buyer would not remove it until the price was paid. Before removal and before payment, the stack was destroyed by fire without the fault of either party. The question was who bore the loss.

Held: The buyer bore the loss and remained liable for the price. The contract was for specific goods and was unconditional, so the property passed to the buyer when the contract was made. Postponement of delivery and payment did not postpone the passing of property, and with the property went the risk.

Ratio: In a contract for specific goods with nothing left to be done, property passes on the making of the contract, although delivery and payment are deferred, and the risk passes with it. Sections 20 and 26 of the Indian Act state the same rules.

3. Agreement to Sell: A Future Transfer

It is executory. It creates obligations but does not yet transfer ownership. The seller remains owner and the goods remain at his risk, unless otherwise agreed.
It arises where property is to pass at a future time, for example on a named date or on delivery.
It arises where property is to pass on a condition, for example on payment, on approval, on the goods being weighed or put into a deliverable state, or on their being ascertained.
It is the only form possible for future goods. Section 6(3) turns a purported present sale of future goods into an agreement to sell.
It is the usual form for unascertained goods, since Section 18 prevents property passing until the goods are ascertained.

4. When an Agreement to Sell Becomes a Sale

Under Section 4(4) the change happens automatically. No fresh contract and no further act of conveyance is needed. When the agreed time arrives, or the condition is fulfilled, the agreement to sell becomes a sale and property passes. The rules in Sections 18 to 24 identify that moment for the common cases: when goods are put into a deliverable state and the buyer has notice, when they are weighed or measured, when unascertained goods are appropriated to the contract, and when goods sent on approval are approved or retained.

5. Absolute and Conditional Contracts

An absolute contract transfers property unconditionally, either at once or at a fixed time.
A conditional contract makes the transfer depend on an event. The condition may be precedent, so that property does not pass until it is satisfied, or subsequent, so that a completed sale may be undone if it occurs.
A reservation of title is the most common conditional term in commercial practice. The seller delivers the goods but provides that ownership will remain with him until the price is paid in full. Section 25 recognises the seller's right to reserve the right of disposal.

📖 McEntire v. Crossley Brothers Ltd., [1895] AC 457 (HL)

Facts: A gas engine was delivered to a buyer under an agreement providing that it would remain the property of the sellers until the price had been paid in full, the buyer paying by instalments. Before payment was complete, the question arose whether the sellers or the buyer's assignee for creditors owned the engine.

Held: The House of Lords held that the sellers remained owners. The agreement was a genuine conditional sale: the parties had made the passing of property depend on full payment, and their intention governed. Delivery of possession to the buyer did not transfer ownership.

Ratio: Where the parties agree that property shall not pass until the price is paid, the contract is a conditional agreement to sell and the seller remains owner despite delivery.

6. Sale and Agreement to Sell Compared

Point	Sale	Agreement to sell
Nature	Executed; a contract and a conveyance	Executory; a contract only
Property	Passes at once	Passes later, or on a condition
Risk, s. 26	With the buyer, unless otherwise agreed	With the seller, unless otherwise agreed
Rights created	A right in rem: the buyer owns the goods	A right in personam: the buyer has a claim against the seller
Seller's remedy on default	A suit for the price, s. 55	Damages for non-acceptance, s. 56
Buyer's remedy if seller resells	The buyer may follow the goods as owner	Damages against the seller, unless s. 30 applies
Seller insolvent	The buyer may claim the goods from the estate	The buyer proves as a creditor for his loss

7. The Position Stated Shortly

Section 4 covers both a sale, where property passes at once, and an agreement to sell, where it passes later or on a condition.
A sale is a contract and a conveyance; an agreement to sell is only a contract.
Tarling v. Baxter: property in specific goods under an unconditional contract passes when the contract is made, and the risk passes with it.
Future goods can only be the subject of an agreement to sell, and unascertained goods usually are.
Section 4(4): an agreement to sell becomes a sale automatically when the time elapses or the condition is fulfilled.
A contract may be absolute or conditional, and a reservation of title makes it conditional.
McEntire v. Crossley Brothers: where property is to pass only on full payment, the seller remains owner despite delivery.