A contract-law concept defining a formation element, enforceability rule, or negotiated term affecting obligations between parties. It governs formation, interpretation, performance, breach, or remedies by specifying conditions that must be satisfied or effects that follow. It does not apply where required assent, consideration, authority, or writing elements are absent when they are prerequisites. It materially determines whether obligations are enforceable and what remedies are available for nonperformance. The concept is generally stable, though statutory reforms and commercial practices may refine its application over time.

Principle

When reasonable grounds for insecurity arise, the non‑insecure party may in good faith request adequate assurance; the request must be proportionate and the requested assurance must be commercially reasonable under the circumstances.

Demonstration

A buyer learns that a seller's manufacturing plant has halted and, fearing non‑delivery, lawfully demands a letter of credit or performance bond as adequate assurance before continuing to pay or accept partial deliveries.

Misapplication

Making unfounded or excessive demands for assurance based on speculation, internal risk tolerance, or minor rumors; such requests can amount to bad faith and breach the contract or statutory rules.

Consequence

If adequate assurance is provided within a reasonable time, performance continues; if the requested assurance is not given or is inadequate, the requesting party may treat the failure as anticipatory repudiation and seek remedies including suspension or termination.

Reversal

No assurance request is justified when there are no reasonable grounds for insecurity; the non‑requesting party must continue performing absent clear signs of inability or refusal to perform.

Boundary

Requires objective reasonable grounds for insecurity and a demand tailored to the perceived risk; it does not permit open‑ended or punitive security demands and is distinct from guarantees requested at contract formation.

Semantic Tension

Tension with suretyship and performance bonds: adequate assurance is a reactive, proportional remedy to current insecurity, while surety instruments are often pre‑contractual or negotiated commitments to secure performance.

Synthesis

Adequate assurance of performance is a limited, proportional tool allowing a party confronted with reasonable insecurity to require proof or security that performance will occur, balancing protection against opportunistic demands.