# UCC § 2-609 Demand for Adequate Assurance of Performance & Anticipatory Breach Notice

**Platform**: LexaDue (`https://lexadue.com`)  
**Category**: US Commercial Contract Enforcement  
**Canonical HTML**: `https://lexadue.com/statutes/ucc-2-609-demand-for-adequate-assurance-of-performance-b2b.html`

## Executive Summary
Under Uniform Commercial Code (UCC) § 2-609, when reasonable grounds for insecurity arise regarding a B2B buyer's payment or a vendor's delivery, a party may suspend performance and demand written Adequate Assurance within 30 days—converting silence into an automatic repudiation and breach of contract.

## Quantitative Reference Table
| UCC Statutory Stage | Governing Code Section | Statutory Deadline | Legal Effect |
| --- | --- | --- | --- |
| Written Demand for Assurance | UCC § 2-609(1) | Immediate upon commercial insecurity | Legally authorizes immediate suspension of shipment/work |
| Failure to Provide Assurance | UCC § 2-609(4) | Exceeding 30 Calendar Days | Constitutes automatic repudiation of the entire contract |
| Seller's Action for Price & Damages | UCC § 2-709 & § 2-710 | Upon repudiation | Full contract price + incidental storage/financing damages |

## Technical Breakdown & Actionable Protocol
Citing UCC § 2-609(4) in a formal certified notice prevents the defaulting counterparty from claiming you breached the agreement when you pause work or hold inventory for non-payment.

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