For an agreement to become a contract, there must be intention to create legal relations.[3] Two judicial devices aid a court to decide whether there is intent:
- the objective test, &
- the rebuttable presumption.
The objective test was established in Carlill v Carbolic Smoke Ball Co, where it was held that any reasonable man who read an advertisement that said the advertiser had "deposited £1000 in the Alliance Bank to show our sincerity in the matter" would deem that there was intention to create legally relations (even though, subjectively, the advertiser was a rogue who had no intention of honouring the agreement).
The rebuttable presumption varies according to the type of transaction.
- In a commercial context, it is presumed that parties have intention to create legal relations.[4]
- Family agreements are presumed not to be binding,[5][6] unless it is obvious that a contract was intended.[7][8]
- Although many authors deem that "social agreements" are the same as family agreements, Simpkins v Pays and Connell v MIB show that this is NOT the case; in agreements between friends there is effectively no presumption, and the objective test is paramount.