"Title" (ownership) to goods is different from possession of them. Knowing when ownership passes from seller to buyer matters for risk, resale, and what happens if either party becomes insolvent. Here is a plain-English guide for England and Wales under the Sale of Goods Act 1979.
The key principle: intention
For specific or ascertained goods, ownership passes when the parties intend it to pass (Sale of Goods Act 1979, s 17). The contract can say so expressly, and well-drafted contracts usually do (for example, a retention of title clause keeping ownership with the seller until payment).
Where the contract does not make the intention clear, the Act provides default rules (s 18) to work out when ownership passes.
The default rules (s 18), in outline
- Specific goods in a deliverable state: ownership passes when the contract is made (even if delivery or payment is later), Rule 1.
- Specific goods the seller must do something to (e.g. put into a deliverable state, or weigh/measure to fix the price): ownership passes once that is done and the buyer is notified, Rules 2 and 3.
- Goods on approval / sale or return: ownership passes when the buyer signifies approval or keeps them beyond a reasonable time, Rule 4.
Unascertained and future goods
For unascertained goods (e.g. "100 units from my warehouse stock") or future goods, a fundamental rule applies (s 16):
No ownership can pass until the goods are ascertained (identified as the specific goods for that contract).
Once they are ascertained, ownership passes when the parties intend, and the default (s 18, Rule 5) is that ownership passes when goods of the contract description, in a deliverable state, are unconditionally appropriated to the contract by one party with the other's assent (for example, when the seller dispatches them or sets them aside for the buyer).
Retention of title (ROT)
Sellers often include a retention of title clause keeping ownership until they are paid in full, even after the goods are delivered. A valid ROT clause is a powerful protection (it can allow the seller to recover the goods if the buyer fails to pay or becomes insolvent. (Risk can still pass on delivery even though title is retained) the two can be separated.)
Consumers
For consumer purchases, the Consumer Rights Act 2015 governs the relationship, but the underlying point is similar: ownership passes per the contract/sale, and consumers have strong rights if goods are faulty.
Why it matters
- Insolvency: if the buyer becomes insolvent before paying, a seller with a valid ROT clause may reclaim the goods; without one, the seller is just an unsecured creditor.
- Risk: ownership often determines risk in B2B sales (unless agreed otherwise).
- Resale: a buyer generally cannot pass good title to a sub-buyer if they don't yet own the goods (subject to exceptions).
Key takeaways
- For specific/ascertained goods, ownership passes when the parties intend (Sale of Goods Act 1979, s 17); if unclear, the s 18 rules apply (e.g. Rule 1: specific goods in a deliverable state, ownership passes when the contract is made).
- For unascertained/future goods, no ownership passes until the goods are ascertained (s 16), then on unconditional appropriation (s 18, Rule 5).
- A retention of title clause keeps ownership with the seller until paid in full, valuable if the buyer becomes insolvent.
- Ownership affects risk, resale and insolvency, so set it out clearly in the contract.
Sources
- Sale of Goods Act 1979: s 16 (goods must be ascertained), s 17 (property passes when intended), s 18 (rules for ascertaining intention, including Rules 1–5), s 19 (reservation of title)
- Retention of title clauses (effect on ownership and recovery on insolvency); Consumer Rights Act 2015 (consumer sales)
--- This article is general information about the law of England & Wales as at 2026, not legal advice. For advice on your circumstances, consult a qualified solicitor.