What is LOI?
An LOI, or Letter of Intent, is a preliminary, non-binding agreement outlining the key terms of a proposed business acquisition between a buyer and a seller.
For business buyers, the LOI is the crucial first formal step after initial discussions and before full due diligence. It signals a serious intent to purchase and sets the framework for the eventual definitive agreement. Key aspects like the purchase price, deal structure (e.g., asset purchase vs. stock purchase), payment terms (e.g., cash at closing, seller financing, earnout), and a timeline for due diligence are all established here. While typically non-binding as to the overall transaction, certain clauses, such as confidentiality and exclusivity, are often legally binding, protecting the buyer's access to sensitive information and preventing the seller from negotiating with others for a set period.
The LOI is also critical for managing expectations for both parties. For a buyer, it's a chance to propose terms without the full legal commitment and cost of a complex acquisition agreement, allowing them to refine their offer as they learn more during due diligence. Conversely, sellers need to scrutinize the LOI carefully, paying attention to contingencies like 'financing out' clauses or vague due diligence periods, which can create uncertainty. A common mistake is treating the LOI too lightly, overlooking how its terms – even non-binding ones – can heavily influence the final shape and success of the deal, potentially leading to renegotiations or deal collapse if not thought through.
For founders validating a startup idea, while you won't be writing an LOI to acquire a business, understanding its structure is valuable. It demonstrates how formal agreements are built from preliminary understandings, which can inform how you structure partnerships, initial investment terms, or even agreements with early customers. Moreover, if you anticipate your startup eventually being acquired, knowing what an acquirer looks for in an LOI helps you understand the initial negotiation points and the due diligence process you'll undergo.
Worked example
Imagine Sarah, a buyer, wants to acquire 'Trendy Beans Coffee Shop.' After initial talks, she sends an LOI to the owner. It proposes a purchase price of $350,000, payable as $250,000 cash at closing and $100,000 via a 3-year seller financing note. The LOI includes a 45-day due diligence period during which Sarah can review financials and operations, and a 60-day exclusivity clause, meaning the owner can't negotiate with other buyers. This allows Sarah to confidently invest time and money in due diligence without fear of being outbid.
Frequently asked questions
Is an LOI legally binding?
Generally, the overall transaction outlined in an LOI is non-binding, meaning neither party is legally obligated to complete the purchase. However, specific clauses, such as exclusivity, confidentiality, and governing law, are almost always legally binding.
What's the difference between an LOI and an Asset Purchase Agreement (APA)?
An LOI is a preliminary, non-binding outline of proposed terms, whereas an APA is a definitive, legally binding contract detailing every aspect of the acquisition, including representations, warranties, indemnities, and closing conditions, after due diligence is complete.
How long does the exclusivity period in an LOI usually last?
The exclusivity period typically ranges from 30 to 90 days, with 45-60 days being common. This period allows the buyer sufficient time to conduct thorough due diligence without competition from other potential buyers.
Related terms

Founder of IdeaCrystal. Previously founder & CTO of Geonode and Repocket.
Connect on LinkedIn →PUT IT TO USE
Understanding LOI is one input. Get a free signal scan to see real demand and competitor data for your specific idea or deal.