M&A Legal Transaction Documents

Letter of Intent vs Purchase Agreement: Key Differences in M&A Transactions

What's binding, what's negotiable, and what matters most. A practical guide from an M&A attorney with over 15 years negotiating LOIs and Purchase Agreements.

Alex Lubyansky

M&A Attorney | Managing Partner, Acquisition Stars

Updated January 2, 2026 14 min read

Key Takeaways

  • LOIs are mostly non-binding; Purchase Agreements are fully binding contracts
  • Exclusivity clause in LOI locks seller in for 60-120 days-negotiate carefully
  • Real negotiation happens in the Purchase Agreement, not the LOI
  • Expect 60-120 days from LOI to final Purchase Agreement

You've negotiated a deal to sell your business. The buyer sends over a "Letter of Intent." You're excited-this feels real now. But you have questions:

  • Is this legally binding?
  • Can I still talk to other buyers?
  • What happens if I sign this and the buyer walks away?
  • How is this different from the final Purchase Agreement?

LOI vs Purchase Agreement: A Letter of Intent (LOI) is a 3-8 page preliminary agreement that's mostly non-binding, outlining deal terms and locking in 60-120 days of exclusivity. A Purchase Agreement is a 30-100+ page fully binding contract that actually transfers ownership, containing detailed representations, warranties, and indemnification provisions. The typical timeline from signed LOI to closed Purchase Agreement is 60-120 days.

After years of negotiating M&A transactions nationwide, I'm going to explain exactly what a Letter of Intent is, how it differs from a Purchase Agreement, and what you need to know to protect yourself in both documents.

LOI vs Purchase Agreement: Quick Comparison

Aspect Letter of Intent (LOI) Purchase Agreement
Binding Status Mostly non-binding (except exclusivity, confidentiality) Fully binding contract
Length 3-8 pages 30-100+ pages
Timeline Day 1 of transaction Day 60-120 (after due diligence)
Purpose Outline basic deal terms, secure exclusivity Define every detail, create enforceable obligations
Price Detail Basic price + structure (non-binding) Final price + all adjustments (binding)
Can Walk Away? Yes (for most provisions) No (except specific contingencies)
Negotiation Level High-level terms Every detail negotiated
Attorney Review Important Critical and intensive

What Is a Letter of Intent (LOI)?

A Letter of Intent is a mostly non-binding preliminary agreement outlining basic M&A deal terms-price, structure, and exclusivity-before due diligence begins.

A Letter of Intent (also called a "term sheet" or "indication of interest") is a preliminary agreement outlining the basic terms of a proposed business acquisition. Think of it as a handshake agreement that gets both parties aligned before investing significant time and money into due diligence and legal documentation.

What an LOI Typically Includes

1. Purchase Price and Structure

  • Total consideration (usually non-binding)
  • Cash at closing amount
  • Earn-out provisions (if any)
  • Seller note terms (if any)
  • Working capital target

2. Transaction Structure

  • Asset sale vs. stock sale
  • Assets/liabilities included/excluded
  • Entity acquiring (if buyer is a corporation)

3. Exclusivity Period (BINDING)

  • Length of no-shop period (60-120 days typical)
  • Seller cannot negotiate with other buyers
  • Conditions for early termination

4. Due Diligence Scope and Timeline

  • Length of due diligence period (30-60 days)
  • Areas to be examined (financial, legal, operational)
  • Seller's cooperation obligations

5. Contingencies

  • Satisfactory due diligence
  • Financing contingency (if buyer needs debt/equity)
  • Board/shareholder approval
  • Key employee retention
  • Third-party consents (landlords, lenders, customers)

6. Confidentiality (BINDING)

  • Non-disclosure of transaction and information
  • Return of confidential materials if deal fails
  • Survival period (typically 2-3 years)

7. Expense Allocation (BINDING)

  • Each party pays own expenses (typical)
  • Who pays for specific items (appraisal, environmental, etc.)

8. Timeline to Closing

  • Target closing date
  • Milestones (LOI → due diligence → PA → closing)

Critical Point: The LOI will explicitly state which provisions are binding and which are non-binding. Always read this section carefully. Most LOIs say something like: "Except for [exclusivity, confidentiality, expenses, governing law], all provisions of this LOI are non-binding."

Negotiating an LOI right now? Talk to Alex before you sign. Request a consultation →

What Is a Purchase Agreement?

A Purchase Agreement is the legally binding contract that transfers business ownership, covering price, representations, warranties, and indemnification.

A Purchase Agreement (also called "Asset Purchase Agreement" for asset sales or "Stock Purchase Agreement" for stock sales) is the definitive, legally binding contract that governs the sale of your business. This is the document that actually transfers ownership and creates enforceable obligations. For a comprehensive breakdown of every section, negotiation points, and common mistakes, read our complete business purchase agreement guide.

What a Purchase Agreement Includes

1. Purchase Price and Adjustments (10-15 pages)

  • Base purchase price
  • Working capital adjustment mechanism (dollar-for-dollar above/below target)
  • Earnout formula with specific metrics and calculation methods
  • Seller note terms (interest rate, security, payment schedule, default provisions)
  • Escrow/holdback amount and release conditions
  • Tax allocation (IRS Form 8594 for asset sales)

2. Assets and Liabilities (5-10 pages)

  • Detailed list of every asset being transferred
  • Excluded assets (cash, personal property, etc.)
  • Assumed liabilities
  • Excluded liabilities

3. Representations and Warranties (20-30 pages)

Seller's promises about the business:

  • Financial statements are accurate and complete
  • No undisclosed liabilities
  • No pending or threatened litigation
  • All contracts are valid and enforceable
  • Compliance with all laws and regulations
  • No environmental violations
  • Intellectual property ownership and no infringement
  • Employee matters (no disputes, proper classification)
  • Tax compliance
  • Customer and supplier relationships

4. Covenants (5-10 pages)

Pre-closing obligations:

  • Operate business in ordinary course
  • No extraordinary transactions without buyer consent
  • Maintain insurance
  • Provide access for due diligence

Post-closing obligations:

  • Non-compete agreement (3-5 years typical)
  • Non-solicitation of customers and employees
  • Transition assistance (30-180 days)
  • Cooperation with disputes/claims

5. Conditions to Closing (3-5 pages)

  • Representations and warranties remain true
  • No material adverse change
  • Third-party consents obtained
  • Financing secured (if applicable)
  • Regulatory approvals received

6. Indemnification (10-15 pages)

  • Seller indemnifies buyer for breach of reps/warranties and excluded liabilities
  • Buyer indemnifies seller for assumed liabilities
  • Survival periods (12-24 months general, longer for taxes/title)
  • Caps (10-30% of purchase price for general indemnity)
  • Baskets/deductibles ($25K-$100K typical threshold)
  • Claim procedures and dispute resolution

7. Closing Mechanics (5-8 pages)

  • Date and location of closing
  • Documents to be delivered at closing
  • Payment instructions
  • Post-closing adjustment process

8. General Provisions (5-10 pages)

  • Governing law (state where business operates)
  • Dispute resolution (litigation vs. arbitration)
  • Notices
  • Assignment restrictions
  • Entire agreement clause
  • Amendment procedures

Transaction Timeline: From LOI to Closing

Day 1-7: LOI Negotiation and Execution

  • Buyer submits initial LOI
  • Seller reviews with attorney
  • Negotiate key terms (price, exclusivity, timeline)
  • Sign final LOI

Day 7-60: Due Diligence Period

  • Buyer conducts comprehensive due diligence
  • Seller provides requested documents and information
  • Management presentations and Q&A sessions
  • Buyer identifies issues and concerns
  • Price renegotiation discussions (if necessary)

Day 60-90: Purchase Agreement Negotiation

  • Buyer's attorney drafts initial Purchase Agreement
  • Seller's attorney reviews and provides comments
  • Multiple rounds of negotiations on reps, indemnity, price adjustments
  • Draft ancillary documents (employment agreements, leases, etc.)

Day 90-120: Closing Preparation

  • Execute Purchase Agreement
  • Satisfy closing conditions (consents, approvals)
  • Prepare closing documents
  • Final walkthrough and confirmations

Day 120: Closing

  • Execute all closing documents
  • Transfer purchase price
  • Transfer assets/stock certificates
  • File necessary documents (UCC-1, entity amendments, etc.)
  • Celebrate!

Critical Negotiation Points in LOIs

1. Exclusivity Period Length

Buyer wants: 120+ days to complete thorough due diligence without competition

Seller should push for: 60-90 days maximum

Why it matters: During exclusivity, you cannot talk to other buyers. If this buyer walks away after 120 days, you've wasted 4 months and potentially lost other interested buyers. Shorter exclusivity = more leverage.

2. Termination Rights

Sellers should negotiate: Right to terminate exclusivity if buyer isn't diligently pursuing due diligence, isn't providing timely responses, or material terms change significantly. Without this, you're stuck waiting for exclusivity to expire even if the buyer has clearly lost interest.

3. "Subject to Due Diligence" Language

Nearly all LOIs include language like "this offer is subject to satisfactory completion of due diligence." This gives buyers broad ability to walk away. Some buyers use overly broad language like "satisfactory in buyer's sole discretion"-push back on this. Require that due diligence concerns be "material" and "reasonable."

Critical Negotiation Points in Purchase Agreements

1. Indemnification Caps and Baskets

Cap: Maximum amount seller can be liable for (typically 10-30% of purchase price for general indemnity)

Basket: Minimum threshold before claims can be made (typically $25K-$100K)

Example: $10M deal with 20% cap ($2M) and $50K basket means: Buyer must incur $50K+ in losses before making a claim, and seller's maximum liability is $2M total.

2. Representations and Warranties Survival

How long can buyer make indemnification claims for breaches? Typical survival periods: 12-18 months for general reps, 3-6 years for tax matters, indefinite for title/ownership. Sellers should negotiate for shorter periods-the longer they survive, the longer you're at risk.

3. Material Adverse Change (MAC) Clause

Allows buyer to walk away if business materially deteriorates between signing and closing. Sellers should narrow this: exclude general economic conditions, define "material" with specific thresholds (e.g., >20% revenue decline), and limit the period (e.g., 30-60 days before closing, not from LOI date).

5 Costly Mistakes with LOIs and Purchase Agreements

1. Signing an LOI Without Attorney Review

Even though most LOI terms are non-binding, the binding provisions (exclusivity, confidentiality) can seriously hurt you. Spending $2,000-$5,000 for attorney review of an LOI can save you from months of wasted time or leaked confidential information.

2. Accepting Long Exclusivity Periods

Signing a 180-day exclusivity period essentially takes your business off the market for 6 months. If that buyer walks away, you've lost irreplaceable time and momentum. Push for 60-90 days maximum with clear termination rights if buyer isn't performing.

3. Treating the LOI Price as Final

Just because the LOI says $10M doesn't mean you're getting $10M. Buyers routinely request price reductions during due diligence ("we found X issue, we need a $500K reduction"). The real price is what's in the signed Purchase Agreement after all negotiations conclude.

4. Not Reading Indemnification Provisions Carefully

The indemnification section determines your exposure AFTER the sale closes. Agreeing to unlimited indemnification or very long survival periods means you could face million-dollar claims years after you thought the deal was done. Negotiate caps, baskets, and reasonable survival periods.

5. Using a General Attorney Instead of an M&A Specialist

Purchase Agreements are highly specialized legal documents. Your corporate attorney or estate planning lawyer likely hasn't negotiated one in years (if ever). An M&A attorney negotiates these monthly and knows market standards, dangerous clauses, and how to protect you. The wrong attorney can cost you hundreds of thousands in bad deal terms.

Navigating an LOI or Purchase Agreement?

Alex Lubyansky handles every deal personally, from LOI through closing.

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Frequently Asked Questions

Is a Letter of Intent legally binding in business sales?

Most LOI provisions are non-binding except for specific clauses: exclusivity period (no-shop), confidentiality, expense allocation, and governing law. The purchase price and deal terms are typically non-binding, allowing either party to walk away during due diligence. However, if an LOI states that all provisions are binding, it can create a legally enforceable contract.

How long does it typically take from LOI to Purchase Agreement signing?

Expect 60-120 days from signed LOI to executed Purchase Agreement. This timeline includes due diligence (30-60 days), Purchase Agreement negotiation (30-45 days), and final revisions (15-30 days). Complex deals with multiple locations, regulatory approvals, or significant issues can take 120-180 days.

What's the most important clause in a Letter of Intent?

The exclusivity (no-shop) clause is most critical. It prevents the seller from negotiating with other buyers for 60-120 days, giving the buyer time to complete due diligence without competition. Sellers should negotiate the shortest exclusivity period possible and include conditions allowing them to terminate if the buyer isn't performing diligence in good faith.

Can I negotiate after signing a Letter of Intent?

Absolutely. Since most LOI terms are non-binding, significant negotiation occurs after LOI signing during due diligence and Purchase Agreement drafting. Buyers commonly request price reductions or structural changes based on due diligence findings. Sellers can push back or walk away if changes are unreasonable. The real negotiation happens in the Purchase Agreement.

What happens if the deal falls apart after signing the LOI?

Either party can typically walk away (except for binding provisions like exclusivity and confidentiality). However, the buyer may have invested $50,000-$200,000 in due diligence costs with nothing to show. The seller may have wasted 60-120 days of exclusivity and damaged relationships with other potential buyers. This is why careful LOI negotiation matters.

Should I use a template LOI or have my attorney draft one?

Always have your M&A attorney draft or heavily review any LOI. Template LOIs from the internet often contain dangerous provisions, unclear language, or inappropriate terms for your specific transaction. Your attorney will customize the LOI for your situation, protect your interests, and ensure you're not agreeing to unfavorable binding terms.

What's the difference between a binding and non-binding LOI?

A non-binding LOI (most common) treats deal terms as negotiable while binding certain procedural clauses. A binding LOI creates enforceable obligations on price and terms, essentially functioning as a preliminary purchase agreement. Binding LOIs are risky for sellers-if you sign one, you may be forced to sell at that price even if you get better offers later.

How detailed should a Letter of Intent be for a business sale?

Detailed enough to confirm both parties agree on major terms (price, structure, timeline, contingencies) but not so detailed it becomes a mini purchase agreement. A good LOI is 3-8 pages covering: purchase price, payment structure, assets/liabilities included, due diligence scope and timeline, exclusivity period, key contingencies, and expense allocation. Leave detailed terms for the Purchase Agreement.

Can a seller accept multiple Letters of Intent and choose the best one?

Yes, until you sign an LOI with an exclusivity clause. Smart sellers solicit multiple LOIs, compare terms, and use competition to drive better offers. Once you sign an LOI with exclusivity, you're locked in with that buyer for 60-120 days. Use the pre-LOI period to create bidding competition and maximize your deal terms.

What are the most negotiable terms in a Letter of Intent?

Most negotiable: exclusivity period length (push for 60 days vs. buyer's ask of 120 days), working capital requirements, allocation of due diligence costs, conditions for termination, and specific contingencies. Least negotiable after initial discussions: purchase price (though it may change after due diligence) and overall deal structure (asset vs. stock sale).

Conclusion: Both Documents Matter-Negotiate Both Carefully

The Letter of Intent sets the framework and locks in exclusivity. The Purchase Agreement defines every detail and creates binding obligations. Both require careful negotiation with experienced M&A counsel.

Don't make the mistake of treating the LOI as "just a formality" or assuming you can fix everything in the Purchase Agreement. The terms you agree to in the LOI often become the baseline for Purchase Agreement negotiations-buyers resist moving backward from LOI terms.

Similarly, don't assume the Purchase Agreement is "standard" or "boilerplate." Every provision-especially indemnification, reps and warranties, and price adjustments-directly affects how much money you actually receive and your exposure to post-closing claims.

Ready to negotiate your LOI or Purchase Agreement? Submit your transaction details for review by our M&A counsel. We will review your documents, explain the key provisions in plain English, and negotiate favorable terms that protect your interests throughout the transaction.