An Expression Letter of Interest is a crucial preliminary document in business transactions and negotiations within the United States legal framework. It serves as a formal way to communicate serious interest in a business opportunity while maintaining flexibility in negotiations. The document is commonly used when parties want to outline their initial interest and basic terms before committing to more detailed negotiations or due diligence processes. While generally non-binding, it must be carefully drafted to comply with U.S. federal and state laws, particularly regarding securities regulations and contract formation principles. The Letter of Interest typically precedes more formal documents such as Letters of Intent, Memoranda of Understanding, or definitive agreements. It's particularly valuable in complex transactions where parties need to demonstrate serious interest while retaining the ability to withdraw without significant legal consequences.

1. Date and Address Block: Current date and recipient's complete business address

2. Subject Line: Clear indication of the purpose - Expression of Interest in [Project/Transaction/Opportunity]

3. Introduction: Identification of the writing party and brief company background

4. Expression of Interest Statement: Clear statement of interest in the specific opportunity or transaction

5. Project/Opportunity Understanding: Demonstration of understanding of the project or opportunity being pursued

6. Preliminary Terms: High-level outline of key terms or conditions of interest

7. Non-Binding Nature: Clear statement that this is a non-binding expression of interest

8. Next Steps: Proposed course of action and timeline for further discussions

9. Closing and Signature: Professional closing, signatory details, and signature block