When entering into a contract in Australia, it is important to ensure that all essential elements are present in order to protect yourself and your business. These elements include:

1. Offer and acceptance: A contract begins with an offer from one party and the acceptance of that offer by the other party. This can be in the form of a written or verbal agreement.

2. Intention to create legal relations: Both parties involved in the contract must have the intention to create legal relations. This means that they understand the legal implications of the agreement they are entering into.

3. Consideration: Consideration is something of value that each party gives to the other in exchange for the agreement. This can be money, goods, or services.

4. Capacity to contract: Both parties must have the legal capacity to enter into a contract. This means they are of legal age and mentally competent to understand the terms of the agreement.

5. Certainty: The terms of the contract must be clear and certain. There should be no ambiguity or confusion in the language used.

6. Lawful object: The object of the contract must be lawful. It cannot be against public policy or violate any laws.

7. Compliance with formalities: Depending on the nature of the contract, there may be specific formalities that need to be followed. For example, contracts relating to property must be in writing and signed by both parties.

By ensuring that these essential elements are present in your contract, you can protect yourself and your business from any legal disputes that may arise. It is also important to have a skilled attorney review the contract before signing to ensure that all elements are present and that the contract is fair and reasonable for both parties.