Definition
A Letter of Intent (LOI) is a preliminary agreement that signals a buyer’s commitment to move forward with a vendor while legal and procurement teams finalize the definitive Statement of Work (SOW). It acts as a commercial "soft-close," establishing the skeleton of the deal—pricing, timeline, and deliverables—to ensure both parties are aligned before investing in exhaustive contract negotiations.
Explanation
In high-end B2B services, the gap between a verbal "yes" and a signed contract is a graveyard for profit margins. If your sales team waits for a 40-page SOW to be redlined by legal before declaring a win, you are bleeding time and inviting scope creep.
An LOI is your commercial insurance policy. Without it, you are effectively working on "good faith" while the client keeps shopping your proposal against competitors. A poorly managed LOI leads to "deal drift," where the client begins adding requirements under the guise of "fine-tuning," eroding your margins before the project even kicks off. Conversely, a sharp LOI locks the client into the core commercial pillars, shifting the conversation from whether they are buying to how they are buying. If you aren't using an LOI to set boundaries, you aren't leading the deal—you’re being held hostage by the client's procurement department.
Examples (or Commercial Impact)
- Done Well: A software consultancy sends an LOI after the final presentation. It explicitly states the project fee, a 30-day exclusivity period, and a "pre-work" fee for initial discovery. The client signs it, the sales team marks the deal as "Committed," and the engineering team begins resource allocation immediately. The SOW is signed two weeks later without changing the core price.
- Done Poorly: A firm skips the LOI to "keep things simple." The client spends six weeks "reviewing" the SOW, during which time their internal priorities shift. By the time the contract arrives, the client demands a 20% discount and additional deliverables to match a competitor’s offer. The vendor, desperate for the win, concedes—the deal closes, but the project is underwater from day one.
Commercial Checklist
- Define the "Binding" Elements: Clearly delineate which parts of the LOI are non-binding (scope/price) and which are binding (exclusivity, confidentiality, and sunset clauses).
- Set an Expiration: Always include a "drop-dead date" for the LOI. If the SOW isn’t signed by that date, the pricing and resource availability in the LOI are no longer valid.
- Include a "Pre-Work" Clause: If the client needs immediate action, use the LOI to authorize a paid discovery phase. Never start work without a signed commitment to pay for it.
- Secure Executive Alignment: Ensure the LOI is signed by the actual budget holder, not just the project manager, to prevent "discovery-gate" where the project is killed after you’ve already invested pre-sales resources.
Related Concepts
- [Margin Leakage](/glossary/margin-leakage)
- [Scope Creep](/glossary/scope-creep)
- [SOW (Statement of Work)](/glossary/sow)
Is an LOI legally binding?+
Generally, no. Most LOIs are structured as non-binding expressions of interest, though specific clauses like confidentiality, exclusivity, and governing law are often made binding to protect both parties during the interim period.
Why use an LOI instead of jumping straight to an SOW?+
An LOI is used when the deal is large and complex enough that waiting for a full SOW would stall momentum. It secures the 'handshake' on high-level economics and timeline before your team spends expensive billable hours on detailed scoping.
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