Sale Process

IOI vs. LOI in M&A: What Each Document Signals and Why the Difference Matters

The average gap between IOI and LOI price is 8–12%, with LOI typically lower. On a $3.2M EBITDA business at 7.2x, that gap can exceed $2M.

Best for:Founders preparing for a saleM&A advisors & bankers
Use this perspective to move toward transaction readiness, sale timing, or M&A execution work.

Key takeaways

  • The average IOI-to-LOI price gap is 8–12%, with LOI lower. On a $3.2M EBITDA business at 7.2x, that's $2.24M, not recovered through negotiation after the LOI is signed.
  • IOI valuation ranges are built on CIM assumptions, not tested data. Every add-back, customer contract, and retention assumption that doesn't survive the diligence preview call becomes a retrade trigger.
  • The LOI's binding provisions, exclusivity, no-shop, and working capital methodology, determine your negotiating position through close. Generic LOI language becomes buyer-favorable SPA language.
  • 34% of deals experience a formal retrade between IOI and LOI. The protection isn't preventing diligence from finding issues, it's surfacing them yourself before buyer assumptions are set.
  • Push for 45-day exclusivity, not 90. Buyers who get 90 days use weeks 10–12 to raise findings when the seller can't restart the process.

In this article

  1. What an IOI contains and what it signals
  2. What an LOI contains and what it actually locks in
  3. The retrade gap and how it happens
  4. What to negotiate at IOI stage vs. LOI stage
  5. Reading a wide range of IOIs: what the spread signals
  6. Common mistakes founders make on IOI and LOI negotiations.

How to use this before a process

If you see this
What it usually means
Best next move
Data room requests feel unclear
The business is reacting to diligence instead of preparing for it
Build the core financial, customer, contract, and operating evidence before buyer outreach
Management answers live in the founder
Buyers will underwrite owner dependency risk
Move recurring explanations into documented reporting and functional-owner narratives
Valuation logic feels subjective
The buyer is pricing risk, not just EBITDA
Tie each value driver to evidence a buyer can verify
Research finding
SRS Acquiom 2025 M&A Deal Terms Study Highlights (1,200+ transactions)American Bar Association M&A Committee data

The average gap between the price indicated in an IOI and the price set in the LOI is 8 to 12 percent, with the LOI price typically lower (SRS Acquiom 2025). This gap is sometimes called retrade, and it is structural rather than exceptional.

34 percent of deals experience a formal retrade between IOI and LOI stage. The most common cause is a diligence preview call that reveals an EBITDA adjustment, concentration issue, or customer attrition not fully disclosed in the CIM.

Average exclusivity period granted in the LOI: 60 days, ranging from 45 to 90 days depending on deal complexity, buyer type, and seller negotiating leverage.

When a buyer submits an indication of interest, they are signaling that the business is interesting and providing a preliminary view on value. When they submit a <a href="/insights/letter-of-intent-ma-founder-guide" class="subtle-link">letter of intent</a>, they are committing to a specific structure, price range, and process. Founders who treat the two as equivalent, or who give away too much in the IOI response, often arrive at the LOI stage having negotiated against themselves without realizing it.

Readiness Snapshot

What buyers will ask

What is ordinary-course working capital for this business?; Which months are distorted by seasonality, inventory, or collection timing?; How does the proposed peg change cash received at close?

What to prepare

24-month month-end working capital schedule.; Account-by-account inclusion and exclusion memo.; Seasonality, inventory, receivable, and payable normalization bridge.

Founders who have received a strong IOI reasonably feel that the process is going well and the price is close to set. A buyer who submitted 7.2x might be expected to close at something near that number. What that view understates is how structurally different the information is between IOI and LOI. The IOI was built on the CIM, which is a curated presentation. The LOI is built on diligence, which is adversarial verification. Every assumption in the IOI that does not survive diligence preview becomes a retrade opportunity.

DocumentIOI (Indication of Interest)LOI (Letter of Intent)
PurposeSignal buyer interest; establish preliminary valuation rangeCommit to transaction terms; begin exclusivity period
Length1–2 pages5–15 pages
Binding provisionsNoneExclusivity, no-shop, confidentiality
Price commitmentNon-binding range based on limited informationNegotiated price or formula; subject to diligence findings
Working capitalNot addressedTarget and methodology specified
ExclusivityNot grantedTypically 45–90 days from signing
Retrade riskHigh; assumptions are untested at IOI stageModerate; protectable through specificity of terms

What an IOI contains and what it signals

An IOI is typically one to two pages, submitted after a buyer has reviewed the confidential information memorandum and completed an initial call with management. It contains a preliminary valuation range (usually expressed as an EBITDA multiple or enterprise value range), a proposed deal structure (cash at close, rollover, <a href="/insights/earnouts-ma-why-founders-dont-get-paid" class="subtle-link">earnout</a> if any), a high-level description of the buyer's thesis, and a request for next steps.

The IOI is non-binding. It signals interest, not commitment. Buyers submit IOIs with relatively limited information, which means the valuation range reflects assumptions about EBITDA quality, <a href="/insights/customer-concentration-problem-transaction-risk" class="subtle-link">customer concentration</a>, growth trajectory, and management retention that have not been tested. When those assumptions shift during diligence, the IOI price does not hold.

The IOI is a bid for access, not a commitment to price. Treating it as a firm offer is the most common mistake founders make in early-stage process management. On a $16M revenue business with $3.2M EBITDA, the difference between an IOI at 7.2x and an LOI that settles at 6.5x is $2.24M in deal value. That gap is not negotiated away after the LOI is signed, and it is determined by whether the seller prepared to defend assumptions before the diligence preview call that preceded the LOI.

What an LOI contains and what it actually locks in

An LOI is more detailed: 5 to 15 pages, often covering price and structure, working capital methodology and target, treatment of cash and debt, <a href="/insights/representations-warranties-insurance-guide" class="subtle-link">representations and warranties insurance</a> expectations, management retention requirements, exclusivity period and no-shop provision, and key diligence conditions.

Non-binding

IOI, preliminary interest only

Binding

LOI exclusivity, no-shop, and confidentiality

60 days

Average exclusivity period (SRS Acquiom 2025)

8-12%

Average IOI-to-LOI price gap

The binding provisions in an LOI are limited, but they are important. Exclusivity means the seller agrees not to engage other buyers during the defined period. No-shop provisions are often broader than founders expect. Working capital methodology sets the target that will determine whether the seller owes money at close through a post-close adjustment. These provisions should be negotiated, not accepted as standard.

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The retrade gap and how it happens

illustrative case study
Situation

A $16M professional services company ran a full sale process with 8 buyers.

Move

The leading buyer submitted an IOI at 7.2x EBITDA. After the management presentation, the buyer requested a diligence preview call. The CFO disclosed during that call that two customers representing 28% of revenue were month-to-month without long-term agreements. The LOI came in at 6.5x. The seller's advisor pushed back, commissioned a quality of earnings review in advance of LOI negotiation, and documented the contract renewal history for both customers.

Result

After two rounds of negotiation, the LOI was executed at 6.9x with a $400K earnout tied to contract renewals. The difference between 6.5x and 6.9x on $16M of revenue at a 20% EBITDA margin was approximately $640K.

Retrades happen because IOIs are submitted on limited information, and diligence reveals something that changes the buyer's view of risk. The most common retrade triggers are EBITDA adjustments (a normalized add-back that does not hold up to scrutiny), customer concentration issues, revenue quality problems (one-time revenue counted as recurring), and key person risk.

The best protection against retrades is not trying to prevent diligence from surfacing issues. It is surfacing and addressing issues proactively, before the IOI, so that buyer assumptions at IOI stage are grounded in accurate information rather than optimistic assumptions that will later be corrected.

What to negotiate at IOI stage vs. LOI stage

Negotiation ItemIOI StageLOI Stage
Valuation rangePush for a tighter rangeLock specific price or formula
Deal structureSignal earnout resistanceNegotiate earnout terms or eliminate
Exclusivity lengthNot typically setTarget 45 days; resist 90
Working capital methodologyNot addressedNegotiate target and definition
Representations and warrantiesNot addressedEstablish insurance expectation
Management rolloverSignal preferenceNegotiate amount and vesting
No-shop scopeNot addressedLimit to seller, not company employees

Reading a wide range of IOIs: what the spread signals

When a banker runs a competitive process, IOIs often come in across a wide valuation range, sometimes 2–3 turns of EBITDA separating the high and low bidders. Most founders fixate on the highest IOI. The more important analysis is understanding what the spread tells you and how to use it to create pressure on the serious bidders.

A wide IOI range signals one of three things: buyers have significantly different views of your EBITDA (look for differences in addback acceptance), buyers have significantly different leverage assumptions (which reflects their financing confidence), or one or more buyers are placeholder bidders who have submitted a high IOI to get into diligence without genuine underwriting conviction.

IOI Spread Analysis

Spread PatternWhat It SignalsHow to Use It
All IOIs within 0.5x EBITDAStrong market consensus; process is competitive; buyer universe is aligned on qualityUse natural competition; focus negotiation on terms, not price
2–3x EBITDA spreadBuyers have different views of addbacks, leverage, or risk; placeholder bidders likely in the poolHave banker probe the outlier buyers on their specific assumptions before calling to LOI
Lone high outlierOne buyer significantly above the pack; may reflect synergy premium (strategic) or aggressive leverage assumption (PE)Do not assume the outlier price is achievable; confirm their financial model before granting exclusivity
Lone low outlierOne buyer significantly below the pack; likely a concern about a specific risk they will not shareAsk the banker to probe what's driving the low number; it may reveal a diligence issue other buyers are also seeing but not yet pricing

The highest IOI and the best LOI are often different buyers. The buyer who bids most aggressively at IOI stage to get into diligence, then finds issues in diligence and retrudes, produces a worse outcome than the buyer who bids conservatively at IOI and never moves. Your banker should assess which buyers are "price-to-diligence" bidders versus buyers who have genuinely underwritten the number before submitting. The former are dangerous.

Do not share IOI valuations across buyers

Confirming prices between buyers reduces competitive tension and may constitute antitrust risk in some circumstances

Let each buyer believe they are competing against at least one other serious party

The perception of competition is as powerful as actual competition

Banker's job

To confirm that multiple credible buyers are moving to LOI; your job is to give them that ammunition

Common mistakes founders make on IOI and LOI negotiations.

MistakeWhat It CostsHow to Avoid
Treating the IOI valuation as the deal priceThe buyer submits an IOI at 7.2x; the LOI comes in at 6.5x; founder has already anchored to the higher numberCommunicate to family and advisors that the IOI is a non-binding preliminary range, not a commitment
Granting an exclusive LOI without competitive tensionA single buyer submits the only IOI; the founder grants 90-day exclusivity without competitive alternativesDo not sign an LOI until you have received at least 2–3 IOIs from credible buyers
Accepting 90-day exclusivity as standardThe buyer uses weeks 10–12 to retrade on diligence findings; the seller has no leverage to walk awayPush for 45–60 day exclusivity; if the buyer needs 90 days, negotiate a price certainty provision
Not negotiating the working capital methodology at LOI stageThe LOI says trailing 12 months; the buyer defines the methodology at the purchase agreement with the seller locked inNegotiate the working capital definition and target explicitly at LOI stage; vagueness always resolves in the buyer's favor
Disclosing diligence weaknesses during the IOI phaseThe founder volunteers customer concentration concerns; the buyer uses it as a price lever before making an offerPrepare a disclosure framework with your advisor before any buyer calls; identify what to disclose and when

Frequently asked questions

What does exclusivity mean in an LOI?

Exclusivity means the seller agrees to negotiate exclusively with the LOI buyer for a defined period, typically 45 to 90 days. During this window, the seller cannot solicit other buyers or share the CIM with new parties. Exclusivity is binding and should be negotiated, most sellers accept 60 days as standard when 45 is often achievable.

Can I negotiate an LOI after signing?

Technically yes, but practically difficult. Once signed, the LOI sets the frame for the purchase agreement. Buyers will treat the LOI as the agreed baseline and resist moving backward. Changes are possible when new material information emerges during diligence, but they require leverage and documentation. The time to negotiate is before signing, not after.

Work with Glacier Lake Partners

Request the IOI and LOI Negotiation Checklist

Useful before submitting to a buyer process or reviewing incoming offers, particularly at the IOI stage when founders most commonly give away negotiating leverage.

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Research sources

SRS Acquiom: 2025 M&A Deal Terms Study HighlightsAmerican Bar Association: Letters of IntentHarvard Law School Forum: LOI Negotiation

Disclaimer: Financial figures and case-study details in this article are anonymized, composite, or representative examples based on middle market operating situations, and are not guarantees of outcome. Statistical references are drawn from cited third-party research; individual transaction and operational results vary based on business characteristics, market conditions, and deal structure. This content is for informational purposes only and does not constitute legal, financial, or investment advice. Consult qualified advisors for guidance specific to your situation.

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