You’re three weeks out from the bar exam, and you just missed another Contracts MBE question because you confused an express condition with a constructive one. The fact pattern seemed straightforward — a buyer promised to pay “only if satisfied with the inspection report” — but you picked the wrong answer because you couldn’t remember whether that language created a condition precedent or just a promise. Sound familiar?

Conditions in contracts trip up more bar examinees than almost any other Contracts topic. The NCBE loves testing your ability to distinguish between express conditions, constructive conditions, and implied-in-fact conditions because getting it wrong changes the entire analysis of breach, excuse, and remedies. Let’s break down exactly what you need to know.

What Is a Condition in Contract Law?

A condition is an event (other than the passage of time) that must occur before a party’s duty to perform becomes absolute. Think of it as a prerequisite. If the condition doesn’t happen, the duty to perform never arises — and crucially, there’s no breach.

This is the key distinction that the MBE hammers: Failing to satisfy a condition is not the same as breaching a promise. If I promise to paint your house “on the condition that you first repair the roof,” and you never repair the roof, my duty to paint never kicks in. I haven’t breached anything because I was never obligated to perform.

Conditions come in three timing flavors:

But the distinction that really matters for MBE purposes is the type of condition: express, constructive, or implied.

Express Conditions: When the Language Is Clear

An express condition is created by the explicit language of the parties. The contract itself states that performance is conditioned on a specific event. Courts enforce express conditions strictly — if the condition isn’t satisfied, the duty doesn’t arise, period.

Magic words to spot express conditions:

Here’s a classic MBE example: A homeowner contracts with a painter to paint the house for five thousand dollars, “payment due only if the homeowner is personally satisfied with the work.” That “only if” language creates an express condition precedent to the homeowner’s duty to pay. If the homeowner is genuinely dissatisfied (even if the work is objectively excellent), the condition hasn’t been met, and no payment is due.

The strict compliance rule: Express conditions generally require strict compliance. If the contract says the buyer must give written notice of defects “within 10 days,” notice on day 11 doesn’t cut it — even if the seller wasn’t prejudiced. Courts will only excuse strict compliance when enforcement would be unconscionable or when the condition has been waived.

One critical exception: satisfaction clauses. When performance is conditioned on one party’s satisfaction, courts apply different standards depending on the subject matter:

Constructive Conditions: What the Law Implies About Order of Performance

Constructive conditions (also called implied-in-law conditions) are not stated in the contract. Instead, courts impose them to ensure fairness and to determine the order of performance when the parties didn’t specify one.

The default rule: In contracts where one party’s performance takes time and the other’s is instantaneous (usually payment), the performance that takes time must come first. The completion of that performance becomes a constructive condition precedent to the other party’s duty to pay.

Example: You hire a contractor to build a deck for ten thousand dollars. The contract doesn’t say when payment is due. The law implies that the contractor’s substantial performance of building the deck is a constructive condition precedent to your duty to pay. You don’t have to pay until the work is substantially complete.

Notice the word “substantial.” Unlike express conditions (which require strict compliance), constructive conditions generally require only substantial performance, not perfect performance. This is the doctrine of substantial performance, and it’s huge on the MBE.

Substantial performance means the performing party has rendered performance that, while not perfect, does not constitute a material breach. The other party must still perform (pay), but can recover damages for any defects. The test usually asks: (1) Can the defects be easily compensated by damages? (2) Was the breach willful? (3) Has the non-breaching party received the substantial benefit of the bargain?

Material breach vs. minor breach: Whether a breach is material determines whether the non-breaching party can suspend performance or must continue performing while suing for damages. A material breach goes to the essence of the contract and defeats its purpose. A minor breach is one where substantial performance has occurred despite some defect.

Here’s where it gets tricky on the MBE: The UCC has different rules. Under the perfect tender rule (UCC §2-601), in a contract for the sale of goods, if the goods or tender of delivery fail in any respect to conform to the contract, the buyer may reject the whole, accept the whole, or accept any commercial units and reject the rest. There’s no substantial performance doctrine for goods — it’s perfect tender or the buyer can reject.

However, the UCC softens this with the cure provision (UCC §2-508). If the seller delivers non-conforming goods before the contract deadline, the seller can notify the buyer of an intention to cure and then make a conforming delivery within the contract time. Even after the deadline, the seller can cure if they had reasonable grounds to believe the tender would be acceptable (perhaps with a money allowance).

Implied-in-Fact Conditions: Reading Between the Lines

Implied-in-fact conditions fall somewhere between express and constructive conditions. They’re not explicitly stated, but they can be inferred from the parties’ words, conduct, or the circumstances surrounding the contract. The difference from constructive conditions is that implied-in-fact conditions reflect the parties’ actual intent, even if unexpressed, while constructive conditions are imposed by law regardless of intent.

Example: A contract for the sale of a house states that closing will occur “on or before June 1.” Nothing explicitly says that the buyer must secure financing, but the entire context of the deal (buyer has no cash, seller knows buyer is getting a mortgage, contract references “subject to buyer’s inspection and loan approval”) creates an implied-in-fact condition that the buyer will obtain financing. If financing falls through despite the buyer’s good faith efforts, the condition hasn’t been met, and the buyer can walk away without breaching.

The line between implied-in-fact and constructive conditions is blurry, and the MBE doesn’t usually test the distinction directly. What matters is recognizing that not every condition is spelled out in magic words. Look for the parties’ reasonable expectations based on the circumstances.

Excuse of Conditions: When You Don’t Have to Meet Them

Even when a condition hasn’t been satisfied, a party may still be required to perform if the condition is excused. The MBE tests these excuse doctrines regularly:

Waiver: A party whose rights are protected by a condition can voluntarily relinquish that protection. Waiver can be express or implied by conduct. Example: A buyer who has the right to reject non-conforming goods but instead accepts them and uses them for two months has waived the condition of perfect tender.

Estoppel: If one party indicates they will not insist on a condition, and the other party reasonably relies on that statement to their detriment, the condition may be excused. This is waiver plus detrimental reliance.

Prevention/Hindrance: If the party whose duty is subject to a condition wrongfully prevents or hinders the occurrence of that condition, the condition is excused. Example: A contract to purchase land is conditioned on the buyer obtaining financing. The seller secretly contacts the buyer’s lender and convinces them not to approve the loan. The financing condition is excused, and the seller must perform.

Anticipatory repudiation: If a party clearly indicates before performance is due that they will not perform, the other party can treat this as a breach and sue immediately. Any remaining conditions to the repudiating party’s performance are excused.

How to Spot Condition Issues on MBE Questions

MBE fact patterns testing conditions usually follow a predictable structure:

  1. Two parties enter a contract (watch for whether it’s UCC or common law)
  2. Something doesn’t go according to plan (a condition isn’t met, or performance is defective)
  3. One party refuses to perform (claiming they have no duty yet, or the other party breached first)
  4. The question asks whether that party was justified in refusing to perform

Your analysis:

Step 1: Is there an express condition? Look for conditional language. If yes, was it strictly satisfied? If no, can the party whose performance was conditioned refuse to perform (unless the condition is excused)?

Step 2: If no express condition, is there a constructive condition based on order of performance? Who was supposed to go first? Did they substantially perform (common law) or perfectly perform (UCC goods)?

Step 3: Has the condition been excused? Check for waiver, prevention, or estoppel.

Step 4: If a condition was satisfied but performance was defective, was the breach material (common law) or did it violate perfect tender (UCC)? Can it be cured?

What You Must Memorize for Test Day

Here’s your takeaway checklist for conditions on the MBE:

The hardest part of conditions questions is keeping your analysis organized under time pressure. You need to quickly identify whether you’re dealing with an express condition requiring strict compliance or a constructive condition where substantial performance suffices. That distinction changes everything about whether a party has breached or simply hasn’t triggered the other side’s duty yet.

If you want all 106 Contracts rules organized for active recall — including the complete conditions framework, breach analysis, and excuse doctrines — that’s exactly what FlashTables covers in its Contracts table. The two-column format puts the rule on the left and the complete definition with elements on the right, so you can test yourself by covering one column and reciting the other. It’s the method a practicing attorney used to pass the bar, and it’s built specifically for the way the MBE tests these distinctions. Check out the Contracts table at getflashtables.com.

Now get back to practice questions. The more conditions hypos you see, the faster you’ll spot the patterns.