Contract requirements: what are the elements of a contract?

Juro knowledge team, 27 April 2021

What separates a simple promise from a binding agreement? Let's explore the key elements that make a contract legally enforceable.

Most professional dealings begin with the formation a contract between two or more parties. Whether a company is hiring an employee or closing a deal, a contract will set out the conditions, obligations, terms, and liability of all the parties involved.

This page explores the key elements that must be present in order for a contract to be binding and enforceable, in specific jurisdictions - with the key differences between the US and UK. Use the menu below to navigate this resource.

What are the elements of a contract? | Offer and acceptance | Intention to be legally bound

Awareness | Consideration | Capacity | Legality

Enforceable contracts | Verbal contracts


What are the elements of a valid contract?

The elements of a legal contract vary around the world according to jurisdiction, although there are some common elements that persist across different legal systems. This post will focus on contracting in the United States (US) and in the United Kingdom (UK).

In the UK, the elements of a contract include:

  • Offer and acceptance
  • Consideration
  • Intention to be legally bound
  • Contractual capacity

The contract law of England and Wales is historically influential, and many of its principles have been incorporated or reflected across the English-speaking world - particularly in Commonwealth countries like Australia and Canada.

The elements of a contract in the US are similar to that of the UK, with slight variations:

  • Offer and acceptance
  • Awareness
  • Consideration
  • Capacity
  • Legality

All these elements must be present for a contract to be binding, and if just one of them is missing, the agreement may not be legally enforceable. Read more about the difference between a contract and an agreement.

Now let’s take a deeper dive into each element.

Offer and acceptance

To form a contract, one party must make an offer that another party accepts. After the offer is made, goods and/or services are exchanged between the two parties in most cases. The party making the offer – the individual or business who owns the goods or services being offered – is known as the offeror. The party willing to compensate the offeror to use or acquire the goods or services is called the offeree. 

An offer generally consists of two parts: the expression and the intention. When the parties articulate a desire to enter into a legally binding contract, this is called the expression. An expression can take on many forms, ranging from a verbal discussion to a formal letter that details the basic terms. The intention is a presumption by both parties that the agreement will be legally binding and they intend to uphold their obligations related to it.

An offer has not technically been made until the offeree receives it. Upon receipt, the offeree can accept, revoke, alter or terminate it. The offeree can also extend the offeror a counter-offer, which terminates the initial offer, leaving the parties free to negotiate the terms of the newly made proposal.Offer and acceptance

What constitutes acceptance of an offer has kept law students busy for centuries, but the short version - particularly in the modern age - is that the offer is accepted when the contract is signed (either through wet signature or electronic signature ).

The contract lifecycle, as we think of it in Juro, mostly covers what happens between offer and acceptance - creating, negotiating and agreeing the contract - but there are other elements at play that determine whether a contract is legally binding. We'll explore these below.

The intention to be legally bound

In the UK, a legal doctrine known as the ”intention to be legally bound” states that a contract is legally enforceable only if the parties intended it to be a binding contract. Without the intention to be legally bound, an action to enforce the contract may not be possible; or conversely, if this intent is present, a party who breaches the agreement may face legal action. 

The means by which a court decides whether the parties intended to be legally bound consists of: (1) the objective test, which determines whether a reasonable person knowledgeable of the circumstances would believe that the parties intended to be bound; and (2) the rebuttable presumption, which establishes a burden of proof regarding whether a valid contract exists. The court will use both of these tests when determining intent.


For a contract to be binding in the US, both parties must have “a meeting of the minds,” meaning they must both be aware of what they are getting into. The parties must:

  • Be active participants in the agreement
  • Recognize that a contract exists 
  • Clearly, decisively, and mutually establish that the agreement is genuine 
  • Consent to its contents, and
  • Freely agree to be bound by its obligations

If awareness cannot be established, a contract can be voided. For example, if one of the parties to the agreement can prove duress, undue influence, fraud, or misrepresentation, the contract will not be valid.

Consideration in a contract

Consideration represents the agreed-upon value in goods, services, property, or even protection from harm resulting from the agreement. For a contract to be legally enforceable, there must be “mutuality of obligation”, meaning that both parties are required to meet their obligations, and consideration represents the commitment the parties make to each other. 

There doesn't need to be an exchange of money for contractual consideration to be valid - although often, money, in the form of a one-off or recurring payment, is consideration in practice. Besides money, some examples of proper consideration include:

  • Services
  • Personal property
  • Contract considerationReal property
  • Promise to act
  • Promise to refrain from acting

If a contract lacks identifiable consideration, a court might consider it invalid. Not just anything will meet the definition of consideration. Here are some examples of a lack of consideration:

  • The agreement is the promise of a future gift.
  • The contract contains an illusionary promise that a party has no actual obligation to fulfil. 
  • One of the parties was already legally obligated to perform under the terms of the contract.
  • The parties are not in mutual agreement regarding consideration.

Entering into a contract is a two-way street. Consideration represents what you agree to give up in the contract to get what you want out of the contract.

Capacity to contract

Only parties with legal capacity – those who demonstrate that they understand the terms, responsibilities, and consequences of the contract before they sign – are allowed to enter into a contract. Individuals lacking the capacity to contract include minors, certain felons, and those of unsound mind.

If it turns out that the parties lacked the capacity to contract, the agreement will be void.

Legality of a contract

This is a key consideration for contracts under US law. All contracts are subject to the laws of the jurisdiction where they are signed. However, US federal and state laws do not always agree, and in those instances, the Contract Clause of the US Constitution will prevail. 

There are also instances where a contract is no longer legal, such as when:

  • Capacity to contractA party signed the agreement due to coercion, threats, false statements, or unsuitable persuasion. 
  • Oppressive obligations or results are triggered.
  • The contract violates public policy or endangers general welfare.
  • An error in the contract has a material effect upon the initial terms. 
  • Circumstances beyond the control of the parties make performance impossible.

Courts will not impose an illegal agreement.  Therefore, a contract needs to be legally enforceable.


Legally binding contracts

If all the required elements of a contract are in place, under the requirements of the jurisdiction in question, then once agreed the contract becomes legally binding on the parties. The legal doctrines that cover issues like breach, remedies, enforcement and so on are huge topics best explored in an academic context - at Juro, our obsession is contract process.

What makes a contract enforceable?

The fundamental elements required to make a contract legally enforceable in the US include a valid offer and acceptance, sufficient consideration, capacity, and legality. The requirements for the UK are set out above, and other jurisdictions vary in their approach to contract law too.

The US Statute of Frauds typically requires that contracts involving the sale or transfer of land or those that cannot be performed within one year be put in writing and formally executed to be enforceable. However, parties may enter into a binding agreement without signing a formal written document. For example, as the Virginia Supreme Court held in Lucy v. Zehmer, even a deal made on a piece of a napkin can be considered valid if the parties were sane and displayed mutual assent and consideration. Once signed, a contract might be enforceable even if one party regrets signing it, as long as all the elements are present. 

Is a verbal contract valid and enforceable?

Verbal contracts can be enforceable, but only if they are provable in court, meet the requirements of contract formation outlined above, and are not in violation of laws prohibiting oral agreements. Although many verbal contracts are legally binding, there is always a possibility that a party won’t fulfil their obligation, which is why many people prefer written agreements.

An example of the potentially expensive enforceability of verbal contracts: In 1984, Getty Oil was sold to Pennzoil through a binding oral agreement but was later sold to Texaco for a higher offer. In 1987, Pennzoil filed a lawsuit against Texaco alleging tortious interference with an oral agreement and was awarded $9.1 billion, plus interest and penalties. 

Read more

The Basics of Business Contracts and Agreements | Financially Simple | How to Write a Business Contract | Commercial Contracts in United Kingdom | 5 Requirements for a Contract | More Juro contract blogs

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