Definition
Concurrent promises are mutual promises in a bilateral contract where each party's obligation to perform is dependent upon the other party's performance or readiness to perform. Neither party can maintain an action against the other for breach without first showing that they have performed, or have tendered performance, of their own side of the bargain. The promises are not independent — they rise and fall together.
The clearest example is a standard sale of property: the seller cannot sue for the price without showing readiness to convey, and the buyer cannot sue for the deed without showing readiness to pay. The mutual dependency is the defining characteristic.
Common Confusion
CONCURRENT PROMISES vs. INDEPENDENT PROMISES: Independent promises impose obligations that do not depend on the other party's performance. A party to an independent promise can sue even if they themselves have not yet performed. The distinction determines whether a plaintiff must plead and prove their own performance as a condition precedent to recovery. Confusing concurrent promises for independent ones can prove fatal to a pleading. Courts and older treatises do not always use these labels consistently, so researchers should focus on whether the contract language creates mutual dependency rather than relying on terminology alone.
CONCURRENT PROMISES vs. DEPENDENT (CONDITIONAL) PROMISES: Some authorities draw a further distinction between concurrent promises (where performance is due at the same time) and dependent promises (where one party must perform first, creating a condition precedent for the other). The practical consequence differs: concurrent promises require simultaneous tender; a dependent structure requires one party to act before the other's obligation matures. Bouvier and other classical sources sometimes collapse these categories, so close reading is necessary.
Core Elements
The mutual-dependency structure of concurrent promises produces three research-significant legal consequences:
1. TENDER AS A PREREQUISITE TO SUIT. A party whose promise is concurrent must show actual performance or a ready, willing, and able tender before a right of action accrues. Failure to plead this is a pleading defect, not merely a damages issue.
2. SIMULTANEOUS PERFORMANCE. Because the obligations mature at the same time, neither party is technically in default until one has tendered and the other has refused or failed to respond in kind.
3. EXCUSE OF TENDER. If one party makes clear in advance that they will not perform (anticipatory repudiation), the other party is generally excused from making a formal tender before bringing suit. This exception is significant for understanding when the concurrent-promise rule yields to the doctrine of anticipatory breach.
Why It Matters in Research
The doctrine of concurrent promises sits at the structural heart of bilateral contract litigation, governing who must act first and what a plaintiff must plead. Several research traps are worth noting.
First, older cases and treatises — including the sources Bouvier cites — use "concurrent," "dependent," and "mutual" promises somewhat interchangeably. When reading 19th-century contract opinions, do not assume that "mutual promises" means concurrent in the strict technical sense. The court's actual analysis of dependency and tender is more reliable than the label.
Second, the rule requiring tender before suit is procedurally significant and historically stricter than modern pleading practice in many jurisdictions. Researchers analyzing historical breach-of-contract cases must assess whether the plaintiff's failure to plead tender was a substantive ruling or a procedural artifact of the era.
Third, in the employment context — particularly implied contract claims arising from handbooks and policy documents — the question of whether employer and employee obligations are concurrent or independent carries real weight. If an employer's obligation to follow termination procedures is construed as concurrent with the employee's continued satisfactory performance, the analysis of breach changes significantly.
Fourth, the concurrent-promises doctrine connects directly to the doctrine of conditions in contract law, and researchers following the thread from Bouvier into modern sources should expect the vocabulary to shift toward "conditions precedent," "constructive conditions," and "substantial performance" in 20th-century and contemporary materials.
Historical Dictionary Support
Bouvier's Law Dictionary defines concurrent promises as mutual promises that are "mutually dependent," citing Leake's Law of Contracts and a general law dictionary reference. Bouvier's formulation is tight and accurate for its era: neither party can sue without showing performance or readiness to perform.
What Bouvier does not address — and what later contract scholarship develops at length — is the theoretical grounding of this rule. By the time of Williston and Corbin, the framework had shifted toward explaining concurrent promises as a species of constructive condition: courts imply that each party's performance is a condition of the other's duty, even when the contract is silent on the point. This constructive-condition analysis, largely absent from 19th-century dictionary treatments, is essential for understanding how courts apply the doctrine today. Researchers relying solely on Bouvier will have the core rule but will miss the theoretical architecture that explains its exceptions and its interaction with the substantial-performance doctrine.
Jurisdictional Note
The basic rule is consistent across common-law jurisdictions. However, the precise requirements for what constitutes a sufficient tender — and whether a party must make a formal tender before suit or merely plead readiness — vary by jurisdiction and have evolved over time. Researchers should verify local pleading requirements rather than assuming the classical formulation controls.
Encyclopedia Cross-Reference
Breach of Implied Contract — Handbooks, Policies, and Promises (The Law Mind Employment & Labor Law Encyclopedia): Relevant where the concurrent or independent character of employer-employee obligations affects the analysis of implied contract breach.