Quick Answer: What is an LOI in business? A letter of intent (LOI) in a business sale is a document, usually written by the buyer, that outlines the key terms of a proposed deal before the parties move into due diligence and final contracts. It covers the purchase price, deal structure, timeline, and conditions, and it signals that both sides are serious about closing. Most of an LOI is non-binding, meaning the price and terms can still change, but specific clauses such as confidentiality and exclusivity are typically binding. A clear, well-structured LOI is one of the most important documents in the entire sale process, because it sets the foundation everything else is built on.
What Is an LOI in Business?
If you are asking what is LOI in business terms, the short answer is that a letter of intent is the document that turns a general conversation into a structured deal. After a buyer has shown interest and both sides have had preliminary discussions, the buyer typically drafts an LOI laying out the terms they are proposing: what they will pay, how the deal will be structured, how long the process will take, and what conditions have to be met.
The LOI is not the final contract. It comes before due diligence and before the definitive purchase agreement. Think of it as the blueprint for the deal: it establishes what both parties believe they are agreeing to, based on what is known today, so that everyone can decide whether it is worth investing the significant time and money that the next stages require.
You may also see an LOI called a memorandum of understanding (MOU) or a term sheet. The labels vary, and an MOU is sometimes used for more complex transactions, but the function is the same: align both parties on the major terms before the lawyers and accountants begin the detailed work.
The Purpose of an LOI in a Business Sale
An LOI does several jobs at once, and understanding them explains why the document matters so much.
It Establishes the Key Deal Terms
The LOI is where the core economics of the deal get written down: the purchase price, the deal structure (an asset sale versus a stock sale, for example), and terms around payment, earnouts, seller financing, contingencies, and liabilities. These are the same structural questions at the heart of any merger or acquisition, and putting them in writing early lets both parties confirm they are actually aligned before anyone spends money on full due diligence and legal drafting.
It Creates a Framework for Due Diligence
Once an LOI is signed, the buyer moves into due diligence, the deep examination of the company’s financials, operations, contracts, and risks. The LOI sets the stage for that work. It gives the buyer a defined basis to investigate against, and it gives the seller a preview of what information will be requested and where potential problems might surface.
It Protects the Buyer With Exclusivity
Most LOIs include a “no-shop” or exclusivity clause, which prevents the seller from negotiating with other buyers for a defined period. From the buyer’s perspective, this is essential: due diligence is expensive, and no buyer wants to spend that money only to have the seller use their offer to attract a higher bid elsewhere. Exclusivity is one of the clauses that is usually binding.
It Signals Serious Intent Without Full Commitment
Signing an LOI tells both sides the other is serious. It is a meaningful step, more than a casual conversation, but because most of it is non-binding, it stops short of locking either party into a transaction that due diligence might change. It is commitment to a process, not yet commitment to a closing.
It Reduces the Risk of Late-Stage Surprises
The clearer the LOI, the less room there is for misunderstanding when the definitive purchase agreement is drafted. A detailed, well-structured LOI surfaces disagreements early, when they are cheap to resolve. A vague one pushes those disagreements downstream, into late-stage renegotiations that cost time, money, and sometimes the deal itself.
What Does an LOI Include?
While every LOI is specific to its deal, most cover the same core elements:
- Purchase price and deal structure. The proposed price, and how the transaction is structured, asset sale versus stock sale, and what is included.
- Payment terms. How and when the price is paid: cash at closing, seller financing, earnouts tied to future performance, or a combination.
- Assets and liabilities. What is being bought and what is being left behind, including which liabilities, if any, the buyer assumes.
- Due diligence period. How long the buyer has to investigate the business, and what access they will have.
- Exclusivity (“no-shop”) period. The window during which the seller agrees not to pursue other buyers.
- Confidentiality. Protection for the sensitive information both sides exchange during the process.
- Timeline and closing conditions. The target schedule and the conditions that must be satisfied to reach closing.
- Binding effect. A clear statement of which provisions are binding and which are not, which is one of the most important parts of the entire document.
Is a Letter of Intent Legally Binding?
This is the question that causes the most confusion, and the answer is: mostly no, but partly yes.
Most of an LOI is intentionally non-binding. The purchase price, the deal structure, the assets included, these are the terms most likely to shift once due diligence reveals the full picture, so neither party usually wants to be locked into them. In most cases the LOI explicitly states that these terms are non-binding, which means either side can generally walk away without legal liability if the deal does not come together.
But certain clauses are typically binding, and they survive even if the rest of the deal falls apart:
- Confidentiality, so the sensitive information shared during the process stays protected.
- Exclusivity, so the seller honors the no-shop period.
- Break-up fees, where included, which compensate one party if the other walks away under defined circumstances.
A well-drafted LOI states clearly and explicitly which provisions are binding and which are not. That single distinction, spelled out in plain language, prevents some of the most expensive disputes that arise in business sales. Because of this, an LOI should always be reviewed by an attorney before it is signed. (This article is educational and is not legal advice; consult a qualified attorney about your specific situation.)
Why the LOI May Be the Most Important Document in the Sale
It is fair to say the LOI is the most important document in a business sale process, even though it is not the final contract, precisely because it comes first. Understanding what an LOI is in business is one thing; understanding how much weight it carries is what actually changes how a seller approaches it.
Every later stage of the deal is built on the LOI. Due diligence investigates against it. The definitive purchase agreement is drafted from it. The negotiation dynamics for the rest of the process are set by it. A clear, thorough, well-structured LOI reduces misunderstandings, limits the need for renegotiation, and measurably increases the odds of reaching a successful closing. A weak or vague LOI does the opposite: it invites delays, disputes, cost overruns, and failed deals.
This is also why the LOI stage is not a good place for a seller to be working alone. By the time an LOI arrives, the buyer has usually done this before. The terms in that document, and the terms that are missing from it, will shape the entire remainder of the sale.
How an Advisor Helps at the LOI Stage
An experienced advisor changes what the LOI stage looks like for a seller in a few concrete ways. This is one of the points in a sale where the advisors and consultants a seller has in their corner make the most visible difference:
- Reading what the terms actually mean. An LOI’s price gets the attention, but the structure, the earnout, the exclusivity length, and the binding-effect language often matter just as much. An advisor reads the whole document, not just the headline number.
- Negotiating before signing. The LOI is far easier to shape before it is signed than to renegotiate afterward. Exclusivity has been granted, leverage has shifted. An advisor helps get the terms right while the seller still has the most room to negotiate.
- Comparing offers on equal footing. When more than one LOI is on the table, they are rarely comparable at a glance. An advisor can translate competing offers into a true side-by-side.
- Connecting the LOI to the bigger picture. The right LOI terms depend on what the seller actually wants out of the sale, in price, timing, future role, and structure. The document should serve the seller’s goals, not just move the deal forward.
Selling Your Business? Talk With MBO Ventures
A letter of intent is one step in a much larger process, and the quality of guidance an owner has at each step shapes where the deal ends up. The LOI in particular rewards preparation: the owner who understands what a strong LOI looks like, ideally well before one arrives, is in a far better position than the owner seeing it all for the first time.
That is the role MBO Ventures plays for business owners, a knowledgeable partner to think through valuation, deal terms, timing, and how a sale fits into broader business exit planning. Understanding the full process, from a business valuation through the LOI and on to closing, is what turns a sale from something that happens to you into something you direct. For a wider view of the journey an LOI sits within, see our guide on how to sell your business.
If selling your business is on your horizon, this year or several years out, reach out to talk through your situation and your options.
FAQs About What Is An LOI In Business
What is an LOI in business?
In a business sale, an LOI (letter of intent) is a document, usually drafted by the buyer, that lays out the key proposed terms of the deal, purchase price, deal structure, timeline, and conditions, before the parties enter due diligence and draft the final purchase agreement. It signals serious intent from both sides and creates the framework the rest of the transaction is built on.
Is a letter of intent legally binding?
Mostly no, but partly yes. The majority of an LOI, including the purchase price and deal terms, is typically non-binding, so either party can usually walk away without legal liability. However, specific clauses, most commonly confidentiality and exclusivity, are usually binding and remain enforceable even if the deal does not close. A well-drafted LOI states clearly which provisions are binding.
What is the difference between an LOI and a purchase agreement?
An LOI comes first and outlines the proposed key terms; it is mostly non-binding and serves as a blueprint. The definitive purchase agreement comes at the end of the process, after due diligence, and is the binding contract that actually governs the sale. The purchase agreement is drafted from the LOI but is far more detailed and fully enforceable.
Who writes the letter of intent, the buyer or the seller?
In most business sales, the buyer drafts the LOI, because it represents the terms the buyer is proposing. The seller, ideally with an advisor and an attorney, then reviews and negotiates those terms before signing. The LOI is much easier to shape before signing than to renegotiate afterward.
What is the difference between an LOI and an MOU?
Very little, in practice. A memorandum of understanding (MOU) and a letter of intent serve the same basic function: aligning both parties on major terms before the definitive agreement. The term “MOU” is sometimes used for more complex transactions, but the labels are often used interchangeably.
Can you back out after signing an LOI?
Usually yes, because most LOI terms are non-binding, either party can generally walk away if the deal does not come together, particularly during due diligence. The exceptions are the binding clauses: backing out does not release a party from confidentiality or exclusivity obligations, and where a break-up fee applies, walking away may trigger it. This is exactly why the binding-effect language matters.