Introduction
A business owner lists their company for sale. A few weeks later, an email arrives from a prospective buyer with a proposed valuation range and some broad deal terms attached. Is this an offer—and should the owner start sharing tax returns and customer lists?
This document is likely an indication of interest, or IOI: a preliminary, generally non-binding written expression of a buyer's interest in acquiring a business. It typically includes an estimated valuation range, a proposed structure, and a rough sense of how the buyer plans to finance the deal.
An IOI is not a purchase agreement, and in most cases, it is not even a formal offer the seller can accept. It is an early signal of seriousness—not a green light to open the data room or pull the business off the market.
This article breaks down what an IOI actually says, how it differs from a letter of intent (LOI), and what owners should check before sharing another document or taking the opportunity off the market.
Key Takeaways
- An IOI is an early-stage document signaling that a buyer may want to acquire your business.
- IOIs typically cover preliminary valuation, deal structure, financing plans, diligence needs, and a rough timeline.
- Most IOIs are non-binding, but the actual wording controls, not the label on the document.
- Headline price means little without checking funding certainty, contingencies, and buyer fit first.
What Is an Indication of Interest in Business?
An Indication of Interest (IOI) is a formally prepared but non-binding letter a buyer submits to show serious interest in acquiring a private company. It sketches an approximate valuation and general deal conditions so both sides can test alignment before investing more time—not a promise to close.
An IOI usually shows up after the buyer has reviewed initial materials such as a teaser or a confidential information memorandum (CIM). By then, they have decided the business is worth a closer look. If value expectations or broad terms are far apart, both parties save weeks of wasted effort.
Axial, which tracks lower-middle-market deal activity, describes the IOI the same way: a structured, non-binding signal of price range and transaction conditions before deeper diligence begins.
That said, "non-binding" is not automatic. The exact language in the document controls, not its title. A few paragraphs tucked into an otherwise casual IOI could create real obligations around confidentiality or exclusivity. Have legal counsel review anything that looks like it might bind you before you sign.
IOI is also used in securities and financing contexts, where it refers to an investor's preliminary interest in a stock offering. That is a different use of the same acronym. This article focuses exclusively on IOIs in private-company acquisitions.
Buyers who submit IOIs come in several forms, and the buyer's identity matters:
- Strategic buyers — companies in the same or an adjacent industry, often looking for synergies
- Private equity groups — institutional funds with committed capital
- Family offices — private investment arms managing wealth for a single family
- Independent sponsors — individuals or small teams who raise capital deal-by-deal rather than through a committed fund
- Individual acquisition entrepreneurs — searchers or operators buying a single business to run themselves
A private equity group with a closed fund behind it carries different financing certainty than an independent sponsor still lining up capital. Both might submit similarly worded IOIs, but the underlying risk is not the same.
What Is Usually Included in an IOI?
A typical IOI covers several categories, though the depth varies by buyer and deal size.
| Element | What to Look For |
|---|---|
| Valuation | Dollar range, multiple of EBITDA, enterprise value vs. equity value |
| Structure | Asset sale, stock/membership-interest purchase, cash, seller financing, earnout, rollover equity |
| Financing | Available cash, committed equity, anticipated debt, lender involvement |
| Diligence scope | Financial statements, tax returns, contracts, customer concentration, licenses |
| Timeline | Management meetings, diligence milestones, target closing date |
Valuation basis matters more than the number itself. A $4 million offer based on enterprise value and a $4 million offer based on equity value can translate into very different proceeds at closing, depending on debt and cash left in the business.
Montage Partners notes that indicative value in an IOI is typically expressed as a range, often assuming a cash-free, debt-free transaction. Sellers need to understand what the number represents before comparing competing IOIs.
Structure deserves equal attention. These terms can swing actual take-home proceeds substantially, even when headline prices look identical:
- A seller note or earnout shifts risk back onto the owner
- Rollover equity ties part of the proceeds to the company's future performance under a new owner
Financing details reveal how real the money is. A buyer with committed equity and an identified lender is in a different category than one who writes "financing to be arranged" with no further detail.
Finally, check the fine print on confidentiality and process. Has an NDA already been signed? Is there an early request for exclusivity before you've even reached the LOI stage? That request, this early, is unusual and worth questioning.
IOI vs. LOI: What Is the Difference?
Owners sometimes treat IOI and LOI as interchangeable. They are not, though the lines can blur in practice.
| Factor | IOI | LOI |
|---|---|---|
| Timing | Earlier, after reviewing initial materials | Later, after management meetings and preliminary diligence |
| Detail | Valuation range, broad assumptions | Specific price, structure, diligence plan, closing framework |
| Commitment | Generally non-binding throughout | Purchase terms usually non-binding; confidentiality, exclusivity, expenses may bind |
Exclusivity is the detail that changes the seller's leverage most. Signing an LOI with a no-shop clause means you stop talking to other buyers for a defined period, typically weeks to a few months.
If that buyer later slows down, re-trades the price, or walks away, you've lost momentum with everyone else. Morris James, an M&A-focused law firm, advises reviewing IOIs and LOIs with an attorney because exclusivity and confidentiality provisions can carry real legal weight even in an otherwise non-binding document.
Labels aren't decisive. A document titled "Indication of Interest" could still include detailed, binding exclusivity language. Read the actual terms, every time, regardless of what the header says.
Most deals move from IOI to LOI to a definitive purchase agreement. But processes vary. Some transactions skip the IOI stage entirely and go straight to an LOI, or use a term sheet instead. Don't assume your deal will follow a textbook sequence.
How an IOI Fits Into the Business Sale Process
A typical marketed sale follows this rough sequence:
- Initial outreach and NDA — buyer signs a confidentiality agreement before receiving sensitive details
- Review of preliminary information — buyer studies a teaser and, once qualified, a confidential information memorandum (CIM)
- IOI submission — buyer puts a preliminary valuation and structure in writing
- Seller evaluation — owner compares IOIs against each other
- Management discussions and deeper diligence — selected buyers meet the team and dig into records
- LOI negotiation — terms get specific, exclusivity usually begins
- Definitive agreement and closing — final documents and transfer of ownership
Receiving multiple IOIs lets a seller compare valuation expectations, financing readiness, and proposed timelines side by side, before granting anyone exclusivity. Generating that competition is one of the main reasons sellers work with a broker rather than negotiating with the first interested party alone.
An IOI is not a sale. Financing can fall through. Diligence can surface problems. Approvals can stall. None of that is settled at the IOI stage, no matter how enthusiastic the buyer sounds.
That uncertainty is also why sensitive information should flow in stages, matching the buyer's seriousness. Broad financial summaries might go out after an NDA; customer-level detail and specific contracts typically wait until diligence, once a buyer has demonstrated real commitment through an LOI.
How to Evaluate and Respond to an IOI
Not every IOI deserves the same response. Here's how to separate serious proposals from the ones that will waste your time.
Start with the economics. Compare valuation basis, payment mix, and any seller note, earnout, or rollover equity component across competing IOIs. A higher headline number with a large earnout tied to uncertain future performance may be worth less than a lower, mostly-cash offer.
Check whether the buyer can actually close. Look at:
- Identified capital sources and whether equity is committed or still being raised
- Prior acquisition history in your industry
- Who actually has decision-making authority
- Dependence on outside financing or lender approval
- Realism of the proposed timeline
Don't take the IOI's own description of the buyer at face value. A quick search into the buyer's track record tells you more than their self-reported credentials.
Watch for retrade risk. Broad diligence rights, vague assumptions, open-ended material-adverse-change language, or unclear working-capital expectations all create room for the buyer to chip away at price later in the process.
Consider fit beyond the number. What happens to employees? Does the buyer want you to stay on, and for how long? Does their plan for the company match what you actually want for it?
Respond through a process, not a gut reaction:
- Ask clarifying questions on price, structure, and conditions
- Request revisions where terms are vague
- Keep competing conversations alive until you trust one buyer
- Bring in legal, tax, and valuation professionals before exclusivity or any hard commit
This is where a structured valuation earns its keep. Mid Atlantic Business Brokers builds confidential valuations with income, market, and asset-based approaches, supported by Certified Business Appraisers using USPAP-aligned methodology.
That work answers a direct question: does this IOI's price and structure hold up against what the business is worth? Sell-side advisory also helps owners prep financials, compare qualified buyers side by side, and negotiate from data instead of guesswork.
Why an IOI Matters to Buyers and Sellers
For sellers, an IOI provides early market feedback. It tells you whether your price expectations are realistic, which buyers are genuinely serious, and gives you a basis for comparison before you grant anyone exclusivity.
For buyers, it's a low-cost way to test alignment before committing to full due diligence, legal fees, and financing work. Nobody wants to spend $50,000 on due diligence only to learn the seller expected double the price all along.
That early signal only helps if you judge the IOI on more than price. A high headline number isn't automatically the best offer. Watch for:
- Uncertain or unconfirmed financing
- Aggressive assumptions about future performance baked into the valuation
- Heavy reliance on an earnout tied to post-sale results
- A buyer whose process suggests a difficult path to closing
A $5 million IOI backed by committed capital and a clean structure often beats a $5.5 million IOI loaded with contingencies.
Every IOI is specific to the facts of that buyer, that business, and that moment. Treat it as a starting point for evaluation, not a valuation, a legal opinion, or a guaranteed offer. Have an advisor review financing certainty, structure, and contingencies before you respond—that step is not optional.
Frequently Asked Questions
What is the difference between an IOI and an LOI?
An IOI generally comes earlier in the process and uses a valuation range with broad assumptions. An LOI usually follows and contains more specific terms, sometimes including binding provisions like exclusivity or confidentiality.
What does IOI stand for in business?
IOI stands for "Indication of Interest." In a business sale, it describes a buyer's preliminary written expression of interest in acquiring a company, typically including an estimated valuation and broad terms.
What does IOI stand for in finance?
IOI stands for "Indication of Interest," but the meaning shifts by context. It can refer to a non-binding acquisition proposal, or, in securities markets, to an investor's expressed interest in purchasing a stock offering.
What is IOI in healthcare business?
In a healthcare business sale, an IOI is a buyer's preliminary, generally non-binding proposal. It may also touch on licenses, payer or reimbursement arrangements, regulatory matters, and whether operations can transfer smoothly to a new owner.
Is an indication of interest legally binding?
Generally, no—an IOI does not commit either side to complete the purchase. Confidentiality, access, or other specific provisions can still create real obligations, so read the language carefully.
What is usually included in an IOI?
Most IOIs cover preliminary valuation, deal structure, financing sources, diligence requests and assumptions, closing conditions, a rough timeline, and sometimes confidentiality or process terms.