- Official section
- National V.A.7: Bilateral and unilateral contracts
- Broker weight
- 19% of the national broker portion
- Expected scored items
- Contracts account for about 17 of 100 items
Illinois exam glossary
Bilateral contract
Think promise for promise. The buyer does not have to hand over the full purchase price at the moment of acceptance, and the seller does not have to deliver the deed that minute. Their enforceable commitments can form the contract now, while closing performance remains due later.
Last updated: August 1, 2026
What does this exam area cover?
Short answer: A bilateral contract is created by exchanged promises. In a typical purchase agreement, the buyer promises to purchase and pay, and the seller promises to convey the described property and perform agreed obligations. The reciprocal commitments ordinarily supply consideration. The contract can be binding yet executory because closing has not occurred, and it can include contingencies that condition particular duties. A promise that leaves all performance optional may be illusory, but valid consideration does not require economically equal or mirror-image obligations.
This guide follows the PSI Illinois Candidate Information Booklet effective June 24, 2026, current Illinois decisions on formation, consideration, mutuality, illusory promises, and executory real estate agreements, Illinois Pattern Civil Jury Instructions revised November 2025, 740 ILCS 80/2, and 5 ILCS 175/5-120, all checked through August 1, 2026. Options, unilateral offers, modifications, leases, installment contracts, deeds, guaranties, entity authority, equitable conversion, breach, and remedies can require separate analysis.
What is on the official outline?
- Topic
- Identify both parties
- What to know
- buyer, seller, lessor, lessee, legal name, entity, trustee, principal, agent, capacity, authority, and signature
- Best exam move
- Each contracting party must be identifiable and capable of being bound directly or through valid authority.
- Topic
- Find exchanged promises
- What to know
- promise to buy, pay, sell, convey, close, deliver possession, repair, insure, finance, and perform
- Best exam move
- Bilateral classification depends on promise exchanged for promise.
- Topic
- Identify offer and acceptance
- What to know
- definite offer, return promise, matching acceptance, communication, deadline, delivery, counteroffer, revocation, and objective assent
- Best exam move
- The bilateral contract forms when the requested promise is effectively accepted, not only when closing later occurs.
- Topic
- Locate consideration
- What to know
- bargained exchange, reciprocal promises, benefit, detriment, responsibility, forbearance, earnest money, and legal value
- Best exam move
- The sale promises themselves ordinarily support the bargain.
- Topic
- Separate earnest money
- What to know
- deposit, due date, escrow, good faith, remedy fund, return, liquidated damages, default, and consideration
- Best exam move
- Do not treat earnest money as the only consideration or its late delivery as automatic nonformation.
- Topic
- Require real commitment
- What to know
- legal obligation, optional performance, illusory promise, termination right, discretion, objective standard, good faith, and reasonable efforts
- Best exam move
- A promise that leaves the promisor completely free to act or not may supply no legal value.
- Topic
- Avoid false mutuality rules
- What to know
- mutuality of obligation, valid consideration, unequal duties, different remedies, asymmetry, reciprocal promise, and Illinois authority
- Best exam move
- Once valid consideration exists, do not add a requirement that every duty be equal or identical.
- Topic
- Add contingencies
- What to know
- financing, inspection, appraisal, attorney review, title, insurance, sale of home, approval, condition, and deadline
- Best exam move
- A defined contingency conditions performance and does not automatically make the buyer's promise illusory.
- Topic
- Require good-faith exercise
- What to know
- satisfaction clause, reasonable effort, financing application, cooperation, inspection, notice, arbitrary decision, prevention, and waiver
- Best exam move
- A party cannot necessarily sabotage a condition and then use its failure as an escape.
- Topic
- Classify executory status
- What to know
- contract formed, duties remaining, closing, purchase funds, title clearance, deed, possession, proration, and final performance
- Best exam move
- A signed binding agreement is executory until material promised performance is complete.
- Topic
- Classify executed status
- What to know
- fully performed, price paid, deed delivered, possession transferred, obligations satisfied, surviving covenant, and closing
- Best exam move
- Executed describes completion, not merely signature.
- Topic
- Track conditions and promises
- What to know
- condition precedent, covenant, representation, warranty, duty, event, breach, excuse, and remedy
- Best exam move
- Failure of a condition and breach of a promise have different consequences.
- Topic
- Apply the land writing rule
- What to know
- Frauds Act, writing, memorandum, party charged, property, price, signature, authorized agent, and enforceability
- Best exam move
- A bilateral land bargain still needs the applicable Illinois signed record.
- Topic
- Use electronic acceptance
- What to know
- electronic signature, intent, attribution, platform, audit trail, final version, consent, delivery, and timestamp
- Best exam move
- Electronic promises can form the agreement when the statutory and contract requirements are met.
- Topic
- Modify by agreement
- What to know
- amendment, changed promise, consideration, closing extension, repair credit, signature, delivery, no oral modification, and authority
- Best exam move
- A modification changes existing bilateral duties and must satisfy its own enforceability requirements.
- Topic
- Identify material breach
- What to know
- nonperformance, substantial failure, notice, cure, deadline, tender, financing, title, refusal to close, and prior breach
- Best exam move
- A material breach can affect the other party's remaining duty, but a minor breach does not automatically cancel everything.
- Topic
- Separate anticipatory breach
- What to know
- clear repudiation, before performance due, refusal, inability, retraction, adequate assurance, damages, and mitigation
- Best exam move
- A definite early refusal differs from mere concern that performance may fail.
- Topic
- Classify remedies
- What to know
- damages, liquidated damages, earnest money, rescission, specific performance, injunction, mitigation, election, and attorney
- Best exam move
- The contract and law determine remedies; bilateral status alone does not select one.
- Topic
- Compare unilateral structure
- What to know
- promise for act, requested performance, reward, acceptance by performance, option exercise, and classification
- Best exam move
- Ask whether the offer sought a return promise or the completed act itself.
- Topic
- Protect brokerage scope
- What to know
- approved form, explain business terms, deadlines, document delivery, no legal opinion, attorney review, breach dispute, and referral
- Best exam move
- The broker administers the transaction without deciding enforceability or remedies.
Which distinctions produce the most mistakes?
- Terms
- Bilateral vs. unilateral contract
- Difference
- A bilateral contract exchanges promises. A unilateral contract invites acceptance through requested performance.
- Question cue
- Promise for promise versus promise for act.
- Terms
- Promisor vs. promisee
- Difference
- The promisor makes a promise. The promisee receives it. In a bilateral contract, each party fills both roles for different promises.
- Question cue
- Commitment maker versus commitment recipient.
- Terms
- Bilateral vs. executory
- Difference
- Bilateral describes formation through promises. Executory describes the fact that material performance remains due.
- Question cue
- Contract type versus performance status.
- Terms
- Executed document vs. executed contract
- Difference
- An executed document is signed. An executed contract, in exam usage, is fully performed.
- Question cue
- Signed paper versus completed duties.
- Terms
- Consideration vs. mutuality
- Difference
- Consideration is bargained legal value. Mutuality language asks whether there are real commitments, but valid consideration avoids a separate symmetry requirement.
- Question cue
- Legal exchange, not matching burdens.
- Terms
- Real promise vs. illusory promise
- Difference
- A real promise constrains future action. An illusory promise leaves the promisor entirely free to perform or not.
- Question cue
- Legal duty versus optional statement.
- Terms
- Contingency vs. illusory promise
- Difference
- A contingency ties a duty to a defined event or standard. An illusory promise lacks a meaningful constraint.
- Question cue
- Conditional commitment versus no commitment.
- Terms
- Condition vs. covenant
- Difference
- A condition is an event affecting when a duty arises. A covenant is a promise whose nonperformance can be a breach.
- Question cue
- Duty trigger versus promised performance.
- Terms
- Formation vs. performance
- Difference
- Formation creates the contract through offer, acceptance, and consideration. Performance fulfills the resulting duties.
- Question cue
- Agreement created versus promise carried out.
- Terms
- Modification vs. counteroffer
- Difference
- A modification changes an existing contract. A counteroffer occurs before formation and proposes a different bargain.
- Question cue
- After contract versus before contract.
- Terms
- Breach vs. failed condition
- Difference
- Breach is nonperformance of a promise. Failure of a condition can mean a related duty never becomes due without either side necessarily breaching.
- Question cue
- Broken promise versus unmet trigger.
- Terms
- Contract vs. deed
- Difference
- The bilateral purchase contract creates promises. The deed is the conveyance instrument delivered at or after performance.
- Question cue
- Promise to transfer versus title transfer.
The P-R-O-M-I-S-E check
- Parties and power: identify buyer, seller, entity, fiduciary, agent, capacity, ownership, and authority.
- Reciprocal commitments: state exactly what each side promises to give, do, refrain from doing, or cause to occur.
- Offer and acceptance: verify matching terms, timing, communication, signature, delivery, and the final document version.
- Meaningful consideration: find the bargained legal value and screen gift promises, past acts, preexisting duties, and illusory discretion.
- If conditions apply: separate contingencies from covenants and track effort, good faith, notice, waiver, satisfaction, and deadlines.
- Status of performance: classify the agreement as formed, executory, partly performed, fully executed, breached, excused, terminated, or disputed.
- Enforcement screen: apply the Frauds Act, authority, legality, remedies, and attorney referral without treating bilateral status as the whole analysis.
- Party
- Buyer
- Typical promise
- Purchase and pay
- Later performance
- Funds and closing documents
- Party
- Seller
- Typical promise
- Convey and perform
- Later performance
- Title, deed, and possession
- Party
- Both
- Typical promise
- Cooperate with contingencies
- Later performance
- Notices and timely action
- Party
- At acceptance
- Typical promise
- Promises exchanged
- Later performance
- Contract forms
- Party
- Before closing
- Typical promise
- Duties remain
- Later performance
- Contract is executory
- Party
- After full performance
- Typical promise
- Promises fulfilled
- Later performance
- Contract is executed
How do the rules work in scenarios?
Typical purchase agreement
Scenario: A buyer signs an offer to buy for $390,000, and the seller signs and delivers an unchanged acceptance before expiration.
- The buyer promises to purchase and pay.
- The seller promises to convey and perform.
- Their exchanged promises form a bilateral structure when the other contract elements are present.
Answer: The purchase agreement is bilateral and remains executory before closing.
Earnest money arrives late
Scenario: A signed purchase agreement requires earnest money in three days, but the buyer delivers it on day four.
- The exchanged sale promises can already supply consideration.
- The late deposit is analyzed under the default, notice, waiver, cure, and remedy clauses.
- It does not automatically change the contract from bilateral to nonexistent.
Answer: Treat the deposit issue as possible nonperformance, not proof that reciprocal promises never existed.
Financing contingency
Scenario: The buyer promises to purchase subject to timely mortgage approval and must apply promptly and cooperate with the lender.
- The buyer has a defined financing condition.
- The prompt-application and cooperation duties constrain discretion.
- The condition does not make the promise wholly optional.
Answer: The contract can remain bilateral while the duty to close is subject to financing.
Buyer may cancel for any reason
Scenario: A writing says the buyer may purchase but can cancel at any moment for any reason, with no time limit, cost, standard, or other commitment.
- The buyer remains completely free to perform or not.
- No meaningful constraint or exchanged legal detriment is stated.
- The apparent promise may be illusory.
Answer: The buyer's unrestricted statement does not supply a reliable bilateral promise.
Unequal obligations
Scenario: The buyer has several financing and inspection duties, while the seller's principal obligation is to convey marketable title. Both promises are supported by the bargain.
- The duties are different in kind and number.
- Consideration does not require identical burdens.
- Each side has undertaken enforceable obligations.
Answer: The contract can be bilateral despite asymmetrical duties.
Signed but not performed
Scenario: The parties have signed and delivered the purchase agreement, but title work, financing, payment, deed delivery, and possession remain outstanding.
- Formation has occurred on the stated facts.
- Material promises remain unperformed.
- Signing does not mean the full contract is executed in the performance sense.
Answer: The bilateral contract is executory.
Seller refuses before closing
Scenario: Two weeks before closing, the seller unequivocally states in writing that the seller will not convey under the binding contract.
- The statement occurs before the seller's performance date.
- It clearly repudiates the promised conveyance.
- The buyer needs legal advice on retraction, tender, mitigation, and remedies.
Answer: The facts suggest anticipatory repudiation, not merely a failed contingency.
What are the common exam traps?
- Trap
- Defining bilateral as signed by two people
- Correction
- Bilateral refers to exchanged promises, not the number of signatures alone.
- Trap
- Waiting until closing to find formation
- Correction
- The contract can form when promises are exchanged even though performance comes later.
- Trap
- Requiring full price at acceptance
- Correction
- The buyer's enforceable promise to pay can support the contract before actual closing payment.
- Trap
- Using earnest money as the only consideration
- Correction
- Reciprocal promises ordinarily provide consideration.
- Trap
- Requiring equal obligations
- Correction
- Valid consideration does not require identical or economically equal duties.
- Trap
- Calling every cancellation right illusory
- Correction
- Defined time limits, notice, cost, objective standards, and good-faith duties can create real constraints.
- Trap
- Calling every contingency illusory
- Correction
- A conditional promise can be enforceable when the event and related duties are defined.
- Trap
- Confusing a condition with a covenant
- Correction
- A condition affects when duty arises; a covenant is promised performance.
- Trap
- Calling a signed contract fully executed
- Correction
- Exam terminology usually treats it as executory while material performance remains.
- Trap
- Calling all land contracts bilateral
- Correction
- Read what the offer invites and distinguish options, unilateral arrangements, deeds, and completed gifts.
- Trap
- Ignoring the signed-writing rule
- Correction
- A bilateral land-sale bargain still faces the Illinois Frauds Act requirements.
- Trap
- Treating modification as counteroffer
- Correction
- A counteroffer precedes formation; a modification changes an existing contract.
- Trap
- Calling every concern anticipatory breach
- Correction
- Repudiation requires a clear refusal or inability, not speculation.
- Trap
- Selecting a remedy from the label
- Correction
- Contract language, materiality, causation, mitigation, and law control available remedies.
- Trap
- Letting the broker rule on breach
- Correction
- Preserve deadlines and facts, then refer enforceability and remedy issues to counsel.
Can you answer these original practice questions?
These questions are original study items aligned to the published outline. They are not copied, recalled, or predicted PSI questions.
1. What creates a bilateral contract?
- An exchange of promises
- Only completed performance
- A deed without delivery
- A listing advertisement
Show answer and explanation
Answer: An exchange of promises
Each party is promisor and promisee for different commitments.
2. What is a typical purchase agreement?
- A bilateral contract
- Only a unilateral reward
- A tax lien
- An appraisal
Show answer and explanation
Answer: A bilateral contract
The buyer and seller exchange promises to purchase and convey.
3. What ordinarily supplies consideration in the sale agreement?
- The reciprocal buyer and seller promises
- Only the deed
- Only the appraisal
- Only the broker's license
Show answer and explanation
Answer: The reciprocal buyer and seller promises
Earnest money is not the exclusive source of consideration.
4. Must bilateral duties be identical?
- No
- Yes
- Only in leases
- Only if recorded
Show answer and explanation
Answer: No
Valid consideration requires legal value, not symmetrical performance.
5. What is an illusory promise?
- A statement leaving performance entirely optional
- A promise with a defined financing condition
- A promise to convey title
- A promise to pay a stated price
Show answer and explanation
Answer: A statement leaving performance entirely optional
It provides no real legal commitment.
6. Can a bilateral contract contain a financing contingency?
- Yes
- No
- Only after closing
- Only in cash deals
Show answer and explanation
Answer: Yes
The condition and related effort, notice, and deadline duties control.
7. A signed purchase contract awaits closing. What is its performance status?
- Executory
- Fully executed
- Void
- Recorded deed
Show answer and explanation
Answer: Executory
Material promises remain to be performed.
8. What is the difference between a condition and covenant?
- A condition affects a duty; a covenant is a promise
- They are always identical
- A condition is a deed
- A covenant is an appraisal
Show answer and explanation
Answer: A condition affects a duty; a covenant is a promise
Failure of each can produce different legal consequences.
9. Does signing alone make the contract fully executed?
- No
- Yes
- Only electronically
- Only if notarized
Show answer and explanation
Answer: No
Executed contract ordinarily means fully performed in exam terminology.
10. What should a broker do when one party clearly refuses to close?
- Document the statement and refer the client promptly to counsel
- Declare specific performance
- Release earnest money unilaterally
- Rewrite the remedy clause
Show answer and explanation
Answer: Document the statement and refer the client promptly to counsel
The broker should not decide breach or remedies.
How should you study this area?
- Session
- Session 1
- Focus
- Identify exchanged promises
- Proof you are ready
- Classify 35 buyer, seller, landlord, tenant, option, reward, promise, performance, and no-commitment scenarios.
- Session
- Session 2
- Focus
- Test consideration and mutuality
- Proof you are ready
- Solve 30 reciprocal-promise, earnest-money, unequal-duty, illusory-promise, termination-right, and legal-value problems.
- Session
- Session 3
- Focus
- Separate contingencies and covenants
- Proof you are ready
- Audit 30 financing, inspection, appraisal, attorney-review, title, condition, promise, effort, notice, and waiver facts.
- Session
- Session 4
- Focus
- Track performance status
- Proof you are ready
- Classify 30 formed, executory, partly performed, executed, breached, excused, terminated, rescinded, and modified agreements.
- Session
- Session 5
- Focus
- Handle nonperformance
- Proof you are ready
- Review material breach, minor breach, failed condition, prior breach, anticipatory repudiation, cure, mitigation, and remedy scenarios.
- Session
- Session 6
- Focus
- Run P-R-O-M-I-S-E
- Proof you are ready
- Audit two Illinois purchase contracts, score at least 90 percent, and state every promise and remaining performance aloud.
Do not count recognition as mastery. Close the notes and explain the rule, apply it to a new fact pattern, and identify why each distractor fails.
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Questions students ask about Bilateral Contract: Illinois Real Estate Exam Guide
What is a bilateral contract?
A bilateral contract is formed through an exchange of promises. Each party is both a promisor and a promisee: each makes a commitment and receives the other party's commitment in return. A typical real estate purchase agreement is bilateral because the buyer promises to purchase and pay while the seller promises to convey and perform the seller's obligations.
When does a bilateral contract form?
It ordinarily forms when a definite offer inviting a return promise receives a matching, effective acceptance, supported by consideration and the other contract requirements. Performance can occur later. This is why a signed purchase agreement can bind the parties before the buyer pays the full price or the seller delivers the deed.
What is the consideration in a bilateral sale contract?
The reciprocal promises ordinarily provide consideration. The buyer undertakes to pay and close on agreed terms; the seller undertakes to convey title and satisfy the seller's contractual duties. Earnest money may be required by the agreement, but it is a deposit and remedy fund, not the only consideration supporting the purchase contract.
Is every real estate contract bilateral?
No. Most purchase agreements and leases exchange promises and are bilateral. An option can begin as a separate promise to keep an offer open in exchange for consideration, followed by exercise under its terms. A unilateral contract seeks performance rather than a return promise. Deeds and completed gifts are conveyances, not automatically bilateral executory contracts.
What is mutuality of obligation?
The phrase asks whether the supposed promises create real legal commitments rather than leaving one party entirely free to perform or not. Illinois authority cautions that mutuality is not an additional independent requirement when the bargain already contains valid consideration. The correct screen is whether consideration and enforceable commitments exist, not whether duties look symmetrical.
What is an illusory promise in a bilateral contract?
An illusory promise appears to commit but leaves performance entirely optional. If a buyer promises to buy only if the buyer feels like it, with no objective standard or good-faith limit, the promise may provide no consideration. A financing, inspection, or attorney-review contingency can still support a real contract when its conditions and duties constrain discretion.
Can a bilateral contract contain contingencies?
Yes. A contingency can make a duty to close dependent on financing, inspection, appraisal, attorney approval, title, or another defined event. The contract can be binding while performance remains conditional. Read the deadline, standard, notice, reasonable-efforts or good-faith duty, waiver, satisfaction, and termination language before deciding the effect.
What is an executory bilateral contract?
Executory means material performance remains due. After a purchase contract is accepted, the buyer may still need to secure financing and bring funds, while the seller must satisfy title requirements and convey by deed. The contract is bilateral because promises were exchanged and executory because those promised performances have not been completed.
What happens when one party breaches a bilateral contract?
A material uncured breach can excuse the other party's future performance and support remedies, but the contract, notice, cure rights, conditions, causation, mitigation, and governing law control. Potential remedies include damages, liquidated damages where enforceable, earnest-money treatment, rescission, or specific performance. A broker should not select a legal remedy for a client.
Must an Illinois bilateral land contract be written?
For an enforcement action on a contract for sale of land or an interest in it for longer than one year, 740 ILCS 80/2 requires a writing or memorandum signed by the party to be charged or a lawfully authorized agent. Electronic records and signatures can often satisfy form requirements when attribution, intent, and statutory scope are established.
Are these official PSI questions or legal advice?
No. The practice questions are original. Illinois court materials and statutes were checked through August 1, 2026. This is exam education, not legal advice. A live contract requires the complete signed documents, contingencies, notices, performance history, authority, and review by qualified Illinois counsel.
Primary sources
- PSI Illinois Candidate Information Booklet effective June 24, 2026
- Illinois Supreme Court, Melena v. Anheuser-Busch, Inc., offer, acceptance, and consideration
- Illinois Courts, official Supreme Court decision on consideration and mutuality of obligation
- Illinois Courts, official decision defining an illusory promise
- Illinois Courts, official decision discussing binding executory real estate contracts
- Illinois Courts, Pattern Civil Jury Instructions contract chapter revised November 2025
- Illinois General Assembly, 740 ILCS 80/2 land-contract writing requirement
- Illinois General Assembly, 5 ILCS 175/5-120 electronic signatures
The current official outline controls the tested scope. Statutes, regulations, and official agency materials control when a general study rule and a jurisdiction-specific rule differ.
Editorial status
Checked against primary sources
The Pass Illinois editorial team last checked this guide on August 1, 2026. Every practice question is an original study item, and the source links above let you verify the rules that support the lesson.