A contract can be legally binding even if it's not in writing. However it must meet certain fundamental elements just like a written contract. Oral Contracts are formed through spoken words or verbal agreements, without a written document. Oral contracts often rely on the credibility of the parties involved and any evidence that can support the existence of the agreement.

Non-written contracts can still be binding. Oral contracts can still satisfy the requirements for a valid contract like offer and acceptance as long as the other essentials are also present. It is however important to note that written contracts are always recommended because they provide a clear record of the terms agreed upon by the contracting parties.

A contract can be legally binding even if it's not in writing provided that all parties have agreed upon the same and the contract has met the fundamental elements like a written contract. Oral contracts are difficult to enforce because they are just verbal or spoken agreements. It is important to note that some agreements must be in writing to constitute a binding agreement such as Hire-purchase agreements, contracts for transfer and contracts for sale of goods.