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Required Elements of
A Valid Contract

Master the four essential elements every enforceable contract must contain: offer, acceptance, consideration, and legal capacity.

CPA Regulation (REG)

What Is a Contract?

A contract is a legally enforceable agreement between two or more parties that creates mutual obligations. If one party fails to perform, the other may seek a legal remedy.

On the CPA REG exam, you must be able to identify whether all required elements are present and determine if a contract is valid, void, or voidable.

Why Contract Validity Matters

Legal Protection
Valid contracts can be enforced in court: parties can sue for damages or specific performance
Business Certainty
CPAs advise clients on whether transactions create binding obligations with legal consequences
CPA Exam Focus
Contract law is a core topic on REG: expect multiple questions testing element identification

The Four Essential Elements

Valid Contract 1. Offer & Acceptance 2. Consideration 3. Legal Capacity 4. Legality of Purpose

Element 1: Offer

An offer is a definite proposal made by the offeror to the offeree, demonstrating a willingness to enter into a contract on specific terms.

1
Intent: The offeror must show a serious, objective intent to be bound. Jokes, advertisements, and invitations to negotiate are generally not offers.
2
Definite terms: The offer must include essential terms: parties, subject matter, price, and time of performance.
3
Communication: The offer must be communicated to the offeree. You cannot accept an offer you never knew about.

Element 1: Acceptance

Acceptance is the offeree's unqualified agreement to all terms of the offer. Under common law, acceptance must mirror the offer exactly.

Mirror Image Rule
Acceptance must match the offer exactly. Any change in terms is a counteroffer, not acceptance.
Mailbox Rule
Acceptance is effective when dispatched (mailed), not when received, unless the offer specifies otherwise.

Element 2: Consideration

Consideration is the "bargained-for exchange": something of value that each party gives up in return for the other's promise.

Party A Gives: Promise / $ Party B Gives: Goods / Service Payment Performance

Element 3: Legal Capacity

Both parties must have the legal ability to enter into a contract. If a party lacks capacity, the contract is typically voidable at that party's option.

1
Minors: Generally, anyone under 18 can disaffirm a contract (except for necessities like food, clothing, shelter).
2
Mental Incapacity: A person who cannot understand the nature and consequences of the transaction may void the contract.
3
Intoxication: If a party was so intoxicated they did not understand the agreement, the contract may be voidable.

Element 4: Legality of Purpose

A contract must have a lawful purpose. Agreements to perform illegal acts are void: they are unenforceable from the start and cannot be ratified.

Void Contracts
Agreements for illegal gambling, committing crimes, or restraining trade beyond reason are automatically void.
Licensing Statutes
If a party lacks a required license, the contract may be void (regulatory) or still enforceable (revenue-raising).

Void vs. Voidable vs. Unenforceable

Void Voidable Unenforceable
Status No contract exists Valid until cancelled Valid but cannot be enforced
Cause Illegal purpose Lack of capacity, fraud, duress Statute of Frauds, statute of limitations
Who can cancel? No one: it never existed The injured / incapacitated party Either party (defense to enforcement)
Ratifiable? No Yes (once defect is cured) Sometimes (written confirmation)

How to Analyze a Contract

1
Identify the offer: Was a definite proposal communicated with intent to be bound?
2
Confirm acceptance: Did the offeree agree unconditionally? Does the mirror image rule apply, or is this a UCC transaction?
3
Check consideration: Did both parties exchange something of value? Watch for past consideration or illusory promises.
4
Verify capacity: Are both parties adults of sound mind who are not under extreme intoxication?
5
Confirm legality: Is the subject matter legal? Does the contract violate any statute or public policy?

Example 1: A Valid Contract

Scenario: Alex, age 25, offers to sell his car to Brenda for $5,000. Brenda says, "I accept your offer and will pay you $5,000 by Friday." Alex agrees.

✓
Offer: Alex made a definite proposal (sell car, $5,000) communicated to Brenda.
✓
Acceptance: Brenda agreed unconditionally to the exact terms (mirror image).
✓
Consideration: Brenda gives $5,000; Alex gives the car. Both exchange value.
✓
Capacity & Legality: Both adults, selling a car is legal. All elements present.

Example 2: Missing Consideration

Scenario: Carlos tells Dana, "In gratitude for helping me move last month, I promise to pay you $500 next week." Dana agrees. Carlos never pays.

Offer ✓
Carlos made a definite promise to pay $500.
Acceptance ✓
Dana agreed to the terms.
Consideration ✕
Dana's help was already performed: past consideration is not valid consideration.

Example 3: Capacity Defect

Scenario: Emily, age 16, signs a contract to buy a $30,000 luxury sports car from Frank's Dealership. After two weeks, Emily decides she doesn't want the car and wants to cancel.

Emily (16) Minor: Voidable Frank's Dealership Adult: Bound Voidable Emily can disaffirm; Frank cannot

The Statute of Frauds

Certain contracts must be in writing to be enforceable. Even if all four elements are present, an oral version of these contracts is unenforceable.

M
Marriage: Contracts made in consideration of marriage (e.g., prenuptial agreements).
Y
Year: Contracts that cannot be performed within one year from the date of making.
L
Land: Contracts for the sale or transfer of an interest in real property.
E
Executor: Promises by an executor to pay estate debts from personal funds.
G
Goods: Sale of goods priced at $500 or more (UCC) and Guaranty/Suretyship promises.

Common Mistakes on the Exam

✕ Confusing Void and Voidable
Illegal purpose = void (never existed). Lack of capacity = voidable (exists until cancelled). These are not interchangeable.
✕ Past Consideration Counts
A promise to pay for a service already performed is not supported by consideration. It's a gift promise, not a contract.
✕ Ads Are Offers
Most advertisements are invitations to negotiate, not offers. An ad generally becomes an offer only if it is specific, limiting, and leaves nothing open to negotiation.

Summary: Elements at a Glance

Element Requirement If Missing
Offer Definite, communicated, intent to be bound No contract formed
Acceptance Unconditional, mirrors offer (common law) No contract formed
Consideration Bargained-for exchange of value Unenforceable gift promise
Capacity Adults, sound mind, sober Voidable by incapacitated party
Legality Lawful subject matter Void: no contract ever existed

Question 1 of 5

Which of the following is required for a valid contract to exist?

Question 2 of 5

Tom promises to pay his neighbor $200 "because you mowed my lawn last summer." The neighbor agrees. Is this an enforceable contract?

Question 3 of 5

A 16-year-old signs a contract to purchase a laptop computer. Under common law, this contract is best described as:

Question 4 of 5

Under the Statute of Frauds, which of the following contracts must be in writing to be enforceable?

Question 5 of 5

Is Green Corp. correct that no contract was formed?