Table of Content
Summary
Term sheets are for fundraising, LOIs are for acquisitions
A term sheet outlines equity investment terms from an investor. An LOI outlines acquisition terms from a buyer. The document type signals the deal type, and they are not interchangeable.
[01]
"Non-binding" doesn't mean no commitment
Both documents are mostly non-binding, but exclusivity and confidentiality clauses are legally enforceable. Signing either locks you out of competing conversations for the exclusivity window.
[02]
LOI exclusivity periods have gotten longer since 2021
Standard LOI exclusivity ran 30-60 days. Since 2021, nearly 40% of LOIs include exclusivity windows of 61 days or more. Every extra week frozen is a week without competitive pressure.
[03]
A signed term sheet is a start, not a finish
Signed term sheets close roughly 90% of the time when diligence runs cleanly. Material surprises in diligence open the door to renegotiation. Stripe renegotiated in 2023 mid-process.
[04]
The 2026 IPO freeze is making LOIs more common
With Klarna, StubHub, and Chime pausing IPOs, late-stage companies are rerouting to M&A exits. Founders who've only seen term sheets are now receiving LOIs for the first time.
[05]
A founder called me on a Friday morning. He'd been running two parallel processes for six weeks: a fundraising round and early acquisition conversations with a strategic buyer. The night before, the buyer had emailed him a document.
He forwarded it to me with one question: "Is this a term sheet or an LOI, and does it matter which one it is?"
It mattered enormously. The document was an LOI with a 90-day exclusivity clause. Signing it would have frozen his fundraising conversations for three months, removing every competing option he had just as investors were getting serious.
He didn't know that. His lawyer hadn't flagged it yet.
He was twenty-four hours from countersigning.
This happens more than it should. Founders who've been through a fundraising round know what a term sheet looks like. When a strategic buyer sends an LOI, the format is different and the implications are different, and most founders treat it as a familiar document when it isn't.
That confusion costs founders time, position, and sometimes the deal entirely. Here's how both documents actually work.
What is a term sheet?
A term sheet is the standard entry point for equity financing, used in roughly 95% of institutional venture deals. In any term sheet vs loi situation you encounter, this document sits on the financing side: an investor taking minority equity. A contract term sheet serves a similar structural function but is often more rigidly binding.
When a venture capital firm, angel investor, or private equity fund decides to invest in your company, they issue a term sheet. It's an offer document laying out the financial and structural conditions of the proposed deal.
A typical term sheet template covers:
Pre-money valuation
Investment amount
Post-money ownership percentage
Type of security (usually preferred equity)
Liquidation preference
Anti-dilution provisions
Pro-rata rights
Board seat composition
Voting rights
Information rights
And an exclusivity window.
Some term sheets also include co-sale rights, drag-along provisions, and conversion mechanics for convertible instruments. The document is written in bullet-point format specifically to make clause-by-clause negotiation tractable.
Who drafts term sheets?
The investor, almost always. This matters because the document reflects the investor's standard position on every clause, not a neutral starting point.
The first term sheet you receive is the opening bid. Everything in it is negotiable before you sign.
Is a term sheet binding?
Mostly no on the core terms. The NVCA model legal documents, which set the standard for term sheet conventions across US venture capital, describe the term sheet as non-binding except for two provisions: the exclusivity period and the confidentiality agreement.
Exclusivity typically runs 30-60 days in a financing context, during which you can't solicit or continue negotiating with competing investors.
Confidentiality prevents you from disclosing the terms to third parties without permission.
The exclusivity window in a term sheet is shorter than in an LOI because the process that follows, from definitive financing documents through closing, is more templated. You're issuing new equity, not selling the company. The legal work moves faster when you have experienced counsel on both sides.
That said, fast in this context means 60-90 days from term sheet to wire, and material issues discovered in diligence can extend that significantly.
A contract term sheet in this context isn't legally different from any other term sheet. "Contract term sheet" is sometimes used interchangeably with "binding term sheet", which refers to a term sheet where the parties have agreed to make the full document enforceable rather than just the standard exclusivity and confidentiality provisions. These are rarer, used when parties want stronger commitment before investing in full legal documentation.
If you receive one labelled as a binding term sheet, treat the entire document like a contract. Legal disputes over binding term sheet interpretation have increased 40% since 2020, so clarity around which provisions are enforceable is essential.
What is a letter of intent (LOI)?
An LOI serves a similar gating function but in a completely different deal context. Where a term sheet signals an investor is ready to write a check, an LOI signals a buyer is ready to acquire.
Letters of intent appear in acquisitions, mergers, strategic partnerships, and licensing deals involving meaningful economic terms. The format is narrative, written in paragraph-style prose rather than bullets. This isn't a style preference.
It reflects the fact that acquisitions are more complex and more variable than financing rounds. They require descriptive language to capture deal mechanics that the bullet-point term sheet format wasn't designed to handle:
Purchase price adjustments tied to working capital targets
Earn-out structures with revenue milestones
Representations and warranties scope
Post-closing integration obligations.
A standard LOI covers the purchase price and payment structure (cash, stock, earnout, or some combination); proposed transaction structure (asset purchase vs. share purchase vs. merger); and exclusivity period.
It also covers due diligence scope and timeline, conditions to closing, representations and warranties framework, confidentiality, and sometimes break-up fees.
The letter of intent vs term sheet distinction starts here. An LOI is structuring a company exit. The stakes are categorically different from a minority equity round.
Who drafts it?
The buyer sets the opening position on price, structure, and the length of exclusivity they want. That last element, how long you stay locked out, matters more than the other two combined.
Unlike term sheets, which follow relatively standardised NVCA-style conventions across the US venture market, LOIs vary significantly based on the buyer's industry, prior transaction history, and legal counsel. A strategic corporate acquirer drafts a very different LOI than a private equity firm running a buyout process.
Is it binding?
Again, mostly no on the core transaction, but yes on specific clauses. According to Goodwin Law's 2023 M&A research, nearly 40% of LOIs now include exclusivity windows of 61 days or more, up significantly from 2021.
In the current M&A environment, buyers are asking for longer exclusivity because diligence has grown deeper and more expensive.
Diligence costs now average $100K-$500K for Series B rounds.
They want certainty before committing significant legal and advisory resources to a process that might not close.
How does a letter of intent vs term sheet actually differ?
The clearest way to map the term sheet vs LOI differences is side by side. For a comprehensive breakdown of binding versus non-binding provisions, see Orrick's technology M&A guidance. This table captures the full comparison:
Feature | Term Sheet | Letter of Intent (LOI) |
|---|---|---|
Deal type | Equity investment (VC, angel, PE minority) | Acquisition, merger, majority stake, strategic deal |
Who drafts it | Investor | Buyer or acquirer |
Format | Bullet points, defined terms, numbered clauses | Narrative paragraphs, letter-style |
Length | 5-15 pages | 3-8 pages (can be longer for complex deals) |
Binding overall? | No, except exclusivity and confidentiality | No, except exclusivity, confidentiality, sometimes fees |
Exclusivity window | 30-60 days (standard) | 45-120 days (trending longer since 2021) |
What follows it | Financing documents: SHA, SPA, subscription agreements | Full due diligence, definitive purchase agreement |
Renegotiation risk | Low, creates friction with investor | Moderate, due diligence often surfaces adjustments |
Regional terminology | US: "term sheet." UK/EU: "heads of terms" | US: "LOI." UK: "heads of agreement" |
Change of control? | No (minority investment) | Yes, typically |
The differences become clear. Term sheets are designed to be negotiated clause by clause. You can redline a bullet point.
LOIs written in paragraph form are harder to mark up with precision, which is why experienced M&A lawyers often convert key LOI paragraphs into term sheet format before extensive negotiation begins. If you receive an LOI and your counsel hasn't suggested this, ask why.
Regional variation also matters.
In the US, the letter of intent vs term sheet distinction is relatively clean: term sheets govern financing rounds, LOIs govern acquisitions.
The term sheet vs loi framework holds even when the label changes across borders.
In the UK and broader EU, the phrase "heads of terms" or "heads of agreement" covers both contexts depending on how it's used.
If you're raising cross-border or being acquired by a European buyer, don't assume their document names map onto US conventions. Ask what the document is designed to accomplish before you treat it as familiar.
Which provisions are actually binding in each?
Most founders read "non-binding" in the opening recitals and relax. That's the wrong response. Both a term sheet and an LOI contain clauses that are fully enforceable from the moment of signature, and the one that matters most is the clause founders most consistently underestimate: exclusivity.
I worked with an acquisition target earlier this year. The founder expected a $28M exit based on their own model and comparable transactions.
The buyer's initial LOI included language describing the purchase price as approximately consistent with the indicative valuation discussed. Nothing in the document made the gap explicit.
The founder signed, entered a 90-day exclusivity window, and stopped responding to inbound interest from two other parties who had expressed curiosity.
Forty-five days into diligence, the buyer's full financial model surfaced. The buyer was pricing the business at 5.8x trailing revenue. The founder's model had assumed a higher multiple.
Neither party had been dishonest. The gap was real, and the assumptions differed in ways neither side had surfaced early enough.
By day 90, the deal was dead. The founder had burned three months of runway on a process that closed without a transaction, had no other active conversations because exclusivity had cleared the field, and had disclosed significant confidential information to a party who was now walking away.
"The moment you sign an exclusivity clause, your negotiating position shifts. You're no longer in a competitive process. The buyer knows you're not talking to anyone else, and that knowledge changes how they approach every subsequent conversation."
Here's what the three binding provisions actually mean in practice:
Exclusivity: You can't solicit, negotiate with, or accept offers from other buyers or investors for the duration stated.
For term sheets, this stops competing term sheets during investor due diligence.
For LOIs, this stops the entire sale process
Both are enforceable. Violating exclusivity can trigger legal claims and destroy trust with a counterparty you may still need. In the current M&A environment, buyers are pushing for 61-plus-day windows more often than ever before.
Confidentiality: Information disclosed during diligence, and the existence and terms of the document itself, are protected.
This is standard and rarely contested in isolation. The violation that does happen:
Founders sharing competitor term sheet terms informally to create urgency
Or referencing the conversation publicly before a deal is announced.
Both can trigger claims.
Break-up or expense fees: These appear more often in LOIs than term sheets.
They specify who bears legal and diligence costs if the deal falls apart and sometimes include a penalty for a party that walks without cause.
In larger transactions, break-up fees can reach 2-5% of deal value.
On a $30M acquisition, that's $600K to $1.5M.
The practical rule: before you sign either document, read every clause and ask what you're committing to if the deal doesn't close. The non-binding sections are aspirational. The binding sections are real obligations.
What does a solid term sheet template include?
If you're receiving a term sheet for the first time or reviewing one that looks thin, here are the provisions a complete term sheet template should include. For a reference model, see the NVCA model legal documents library:
Economic terms:
Pre-money valuation
Investment amount
Post-money ownership percentage
Security type (preferred equity, convertible note, SAFE)
And price per share.
These are the headline numbers.
Investor rights:
Liquidation preference (1x non-participating is founder-friendly; 2x participating isn't)
Anti-dilution provision (broad-based weighted average vs. ratchet or full-ratchet)
Pro-rata rights (right to participate in future rounds)
Information rights (what financial reporting investors receive post-close).
Control provisions:
Board seat composition
Protective provisions (things the company can't do without investor approval)
Drag-along rights (ability to force all shareholders to approve a sale)
Co-sale rights (ability to sell shares alongside the founder in a secondary transaction).
Administrative terms:
Exclusivity window
Closing conditions
Estimated closing timeline
Legal fee responsibility
Confidentiality provision.
A term sheet missing the control provisions section is either early-stage and informal or has been stripped down intentionally. Ask which it is. A term sheet missing economic terms entirely isn't a term sheet; it's an expression of interest.
Don't treat it like a commitment.
After you receive a term sheet, your first call is to your legal counsel. Your second call is to any founders who've worked with this investor before. Term sheets reflect investor culture.
The document tells you a lot about who you're going into business with before you've actually done that.
When should you use a term sheet vs an LOI?
This choice is usually made for you by the context. But understanding when to apply each document type in a term sheet vs loi scenario lets you spot when something looks off. For detailed guidance on document structuring and use cases, see comprehensive M&A resource.
Use a term sheet when:
You are raising equity capital from an investor (VC, angel, or institutional PE minority stake)
The investor is taking a minority stake and your company continues operating independently post-close
The transaction is a priced equity round: Seed, Series A, Series B, or later
You're working with institutional investors who follow NVCA or similar documentation standards
Use an LOI when:
A buyer is proposing to acquire your company or a majority stake
The transaction involves a change of control or a meaningful governance handover
You're entering a strategic partnership with complex economic terms requiring narrative description
The counterparty is a corporate acquirer, PE fund running a buyout, or strategic buyer rather than a traditional minority investor
Some buyers use a hybrid approach:
They send a term sheet to establish headline alignment on valuation and structure, then follow with a more detailed LOI that adds binding exclusivity and diligence access provisions.
This is common in PE buyouts. If you receive a two-step document sequence, treat the second document as the binding framework and negotiate it accordingly.
One pattern worth knowing: founders running dual-track processes, meaning a fundraising round and acquisition conversations simultaneously, need to be especially careful about sequencing. The moment you sign exclusivity on either track, you've effectively ended the other.
I've seen founders accidentally freeze their fundraising process by signing an LOI with a corporate buyer before they had term sheets in hand.
And I've seen founders freeze an acquisition process by signing a term sheet exclusivity clause while the acquirer was three weeks from sending their LOI. Timing matters in ways that aren't always obvious from the documents themselves.
What actually happens after you sign?
Signing either document feels like a milestone. It is, but not the finish line founders treat it as.
The process timeline is completely different for each.
After a term sheet, the standard process runs: exclusivity begins; your legal team drafts definitive financing documents (shareholders' agreement, subscription agreement, and any shareholder rights document); the investor conducts due diligence on your financials, contracts, IP ownership, and team; both sides negotiate specific representations and warranties; and then you close.
For a standard Series A, this takes 60-90 days from term sheet to wire. Anything faster requires unusually clean prior documentation.
The close rate on signed term sheets is high. When due diligence runs without material surprises, signed term sheets convert to closed rounds at roughly 90%, based on data from Carta's private markets reporting. But "without material surprises" is doing significant work in that sentence.
Missing cap table documentation surfaces in diligence and delays closings.
Undisclosed liabilities appear.
Customer concentration problems become visible when the investor's counsel pulls contract details.
IP ownership gaps, particularly for founders who wrote code at a previous employer, create closing conditions that take months to resolve. Each of these can trigger renegotiation or a full walk. None of them are hypothetical.
They happen regularly in every stage of startup fundraising.
After an LOI, the process is longer and more variable. Full financial due diligence; commercial due diligence; legal review of every contract, IP assignments, employment agreements and key man provisions; customer interviews; operational audits; and sometimes regulatory approvals. For mid-market acquisitions, this typically runs 90-120 days from LOI to close, according to Orrick's M&A timeline guidance.
More time means more surface area for the deal to develop problems.
Stripe is the instructive landmark case here. The company had been building toward a fundraise at valuations reflecting 2021 market conditions. When the market corrected sharply, Stripe's official announcements, roughly half its prior $95B valuation.
The term sheet process had to be renegotiated as conditions shifted around it. The document didn't protect either party from what the market was doing outside the room. This is a public example of a pattern that happens at smaller scale in closed processes regularly.
The rule: a signed term sheet means the investor intends to invest if diligence confirms what you've represented. A signed LOI means the buyer intends to acquire if diligence confirms what you've represented. Both are conditional.
Both can be renegotiated when conditions change materially. Neither is a deal until the documents are signed and the money moves.
Red flags in both documents worth flagging before you sign
Most founders focus on the headline economics: valuation, ownership, price. In both documents, the clauses that create real problems are in the administrative provisions that get less attention. For specific red flag language, see ABA Business Law Section resources and practical guidance on term sheet reviews.
Undefined exclusivity end date
An exclusivity clause without a specific end date is one of the most common red flags in both documents. "The parties agree to negotiate exclusively until the earlier of closing or mutual agreement to terminate" gives the other party indefinite exclusivity. Always require a specific calendar date (e.g., 60 days from execution), and negotiate extensions only in writing tied to explicit milestones.
Broad diligence access rights
LOIs sometimes include provisions giving the buyer access to employees, customers, and suppliers during diligence. This access, if unstructured, can damage relationships before a deal closes, and cause real harm to your business if the deal falls apart. Constrain diligence access in the LOI to written requests through a single point of contact.
Customer interviews should require your explicit sign-off. Employee conversations should be coordinated.
Vague purchase price adjustment language
LOIs that reference the purchase price as "subject to customary working capital adjustments" without defining what "customary" means create a negotiating problem downstream. Working capital definitions are contentious in every acquisition. The seller's definition and the buyer's definition routinely differ by hundreds of thousands to millions of dollars.
Get the adjustment mechanism defined in the LOI, not left to the definitive agreement.
Missing timeline for the definitive agreement
Both term sheets and LOIs should include an estimated timeline for executing the definitive agreement. Without it, the process can drag indefinitely while you're in exclusivity. A buyer who isn't moving toward closing has no contractual reason to pick up the pace.
Build in a milestone: "The parties intend to execute a definitive agreement within 45 days of this LOI." That creates accountability without being rigid.
What founders get wrong about both documents
For a comprehensive analysis of common founder mistakes, see our guide to startup exit strategies, which covers both term sheets and LOIs in acquisition contexts.
Founders assume "non-binding" means no commitment
The "non-binding" language in the opening recitals is the most misread phrase in deal documentation. Founders see it and assume nothing in the document is enforceable.
In reality, the exclusivity and confidentiality clauses are binding from the moment of signature. Both term sheets and LOIs use this language, and both confuse first-time founders equally.
I see this most often with first-time founders going through an acquisition process for the first time. They receive an LOI, notice "this letter of intent is non-binding" in the opening paragraph, and countersign without flagging the exclusivity clause to their investors or legal counsel. Sixty days later, when the deal gets complicated, they discover they've been legally prohibited from taking other calls for two months.
The correction: before you sign either document, ask your counsel to highlight every binding provision. Read those clauses as if they were a standalone contract. Because functionally, they are.
Founders assume exclusivity is standard and short
Exclusivity is standard. It isn't harmless, and it isn't always short.
Every week you spend in an exclusivity window is a week without competitive pressure in the negotiation. No competing bids. No alternative conversations creating urgency.
Buyers and investors understand this. Exclusivity windows longer than 60 days in an LOI are a negotiating tactic as much as practical request. The buyer is asking for more time than they strictly need because time in exclusivity reduces your ability to generate alternatives.
"I treat exclusivity negotiation as seriously as price negotiation. A 90-day exclusivity at a fair price is worse than a 45-day exclusivity at the same price. Time in exclusivity is time without options.
And in deal negotiations, options are everything."
In a financing context, term sheet exclusivity typically runs 30-45 days and is largely unavoidable. In an acquisition context, exclusivity length is negotiable. Push for the shortest window that gives the buyer a realistic path to completing due diligence.
Tie extensions to specific milestones rather than calendar dates. That structure keeps both parties accountable and prevents the process from quietly extending through inaction.
Founders assume document type doesn't signal deal type
Founders sometimes feel an LOI is "less formal" than a term sheet because it reads like a letter. The opposite framing is more useful. An LOI signals a potential exit, the highest-stakes transaction a founder typically navigates.
The document type isn't signalling lower formality. It's signaling a different kind of deal with different mechanics, different advisors, and different outcomes.
Founders also assume that because a term sheet is more structured, with numbered provisions, defined terms, and organized sections, it doesn't carry more legal weight than a narrative LOI. It doesn't.
A two-page LOI with a clean exclusivity clause is more practically binding than a 12-page term sheet whose exclusivity period expired. The weight isn't in the formatting. It's in the provisions.
How to prepare for either document in 2026?
LOIs are becoming more relevant for a specific and recent reason. With Klarna, StubHub, and Chime all having paused their IPO plans in the wake of tariff-driven market shifts, late-stage companies that were counting on public exits are reassessing their options. recent M&A and venture market trends calls this a "conviction cycle." Deal value is elevated while volume stays muted.
Strategic buyers and PE firms are active, and the companies they're targeting include late-stage startups that expected to IPO.
According to PwC's global M&A trends data, technology continues to attract the highest acquisition values, driven by AI, data, and digital infrastructure. That maps directly onto the profile of companies stuck in the IPO queue. Those founders are going to receive LOIs.
Many of them will have only ever seen term sheets before.
They'll notice the familiar structure: the "non-binding" exclusivity clause and conditions to closing. And they'll assume it maps directly onto their prior fundraising experience. It doesn't.
The document types look similar from a distance. Up close, they are structurally different, used in different contexts, by different parties, with different downstream processes, and with different implications for what you can and can't do while they're active.
Get the right advisors before you respond
My actual advice: when you receive an LOI, your first call is to M&A counsel, not a celebration. Your second call should be to a capital advisor who understands both the document mechanics and your company's current position across active processes.
Our spectup founder resources run both fundraising mandates and sell-side advisory, and across the 10 active mandates running right now, the prep required for each is different in ways that matter when a document lands in your inbox at 11pm before a holiday weekend.
For the cap table management and dilution implications of an acquisition versus a new financing round, those mechanics diverge sharply.
In a fundraising round, you're adding new equity and your cap table expands.
In an acquisition, existing equity is being purchased, and the terms of that purchase, including escrow arrangements and earnout structures, affect how and when each shareholder gets paid.
The documents governing those different outcomes look similar on the first page. The rest of the document determines whether your shareholders end up in the same place as you do.
If you're working with a fundraising consultant or capital advisor, they should be in the room when you receive either document. Not because the legal review belongs to them, but because the strategic implications of the terms include how exclusivity affects your other options, whether the valuation is reasonable given current market conditions, and whether the diligence timeline is realistic. These are things you want a second opinion on before you respond.
The legal review comes after the strategic review. Most founders get that order backwards.
Evaluate advisor experience with acquisition-stage processes
When you're evaluating a private placement agent or capital advisor for a sell-side process, ask specifically whether they've handled dual-track situations where a company was simultaneously raising and fielding acquisition interest. A private placement agent who has only run financing mandates won't give you the same read on an LOI as one who has sat across from acquirers in active processes. The term sheet vs LOI question is a tell for which kind of experience your advisor has.
The term sheet vs LOI question is ultimately a question about what kind of deal you're in and what kind of options you want to preserve. Understand the document before you respond to it. Negotiate the exclusivity before anything else.
And don't sign either document under time pressure without having counsel and an advisor who's seen both sides of both processes.
If you're currently looking at either document and want a direct read on what the terms mean for your specific situation, book a call with me.
Concise Recap: Key Insights
Exclusivity is the clause that matters most
Both term sheets and LOIs are mostly non-binding, but exclusivity provisions are fully enforceable and remove all competing options the moment you sign.
LOI exclusivity periods have gotten longer since 2021
Nearly 40% of LOIs now run 61 days or more. Every week in exclusivity is a week without competitive pressure, so negotiate the window as hard as the price.
The 2026 IPO freeze means more founders will receive LOIs
Late-stage companies rerouting to M&A are generating acquisitions. If you've only seen term sheets, an LOI has different mechanics and different risks.
Frequently Asked Questions
What is the difference between a term sheet and an LOI?
A term sheet outlines the financial and structural terms of an equity investment, typically used in venture capital and private equity financing. An LOI outlines the preliminary terms of a business acquisition or strategic transaction. Term sheets are bullet-point documents drafted by investors; LOIs are narrative-format documents drafted by buyers. The document type signals which process you\'re in and determines both the downstream timeline and diligence requirements that will follow. A term sheet triggers a standard 60-90 day financing process with investor due diligence on financials and operations. An LOI triggers a comprehensive 90-120 day acquisition process with intensive operational and financial due diligence, which is significantly longer and creates more risk. Both are mostly non-binding on the core transaction, but both contain binding exclusivity and confidentiality clauses that restrict your options from the moment you sign. The exclusivity period, typically 30-120 days, is the most consequential term in either document and dramatically affects what other conversations you can pursue.
