Sale Process

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

An IOI and an LOI look similar to founders who have not been through a sale process before. They are not. Understanding what each document signals, what to negotiate at each stage, and why the gap between them is where deals get retraded is foundational to running a good process.

Use this perspective to move toward transaction readiness, sale timing, or M&A execution work.

Key takeaways

  • An IOI is an expression of interest, an LOI is a commitment, and the difference is meaningful.
  • IOI valuation ranges are marketing signals, not offers, and move materially between rounds.
  • The LOI establishes the price, structure, and exclusivity period that define your negotiating position.
  • Get competitive IOIs from multiple buyers before granting any exclusivity.
  • Read the LOI carefully, because most deal terms are set here, not in the purchase agreement.
Research finding
SRS Acquiom M&A Deal Terms Study 2024 (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 2024). 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 letter of intent, 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.

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, earnout 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, customer concentration, 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.

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, representations and warranties insurance 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 2024)

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.

The retrade gap and how it happens

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

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: M&A Deal Terms Study 2024American Bar Association: Letters of IntentHarvard Law School Forum: LOI Negotiation

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