What Happens After Signing an LOI in a Business Sale?

Signing a letter of intent in a business sale feels like the finish line to many founders, but it is really the start of the most demanding stage of the M&A process. An LOI, or letter of intent, is the document that outlines the proposed purchase price, deal structure, exclusivity period, diligence timeline, and key assumptions behind a transaction. In most middle-market deals, the LOI is largely nonbinding on economics but binding on items such as confidentiality, no-shop provisions, and sometimes expense allocation. That distinction matters because once a seller signs, the buyer usually gains a temporary exclusive lane to investigate the company deeply and negotiate final documents without active competition from other bidders.

Understanding what happens after signing an LOI matters because this is where deals either get confirmed, repriced, restructured, or abandoned. Founders often assume the hard part was creating buyer interest. In practice, the harder part is surviving the stretch between LOI and closing while maintaining performance, responding to diligence, managing legal complexity, and keeping emotions under control. I have seen strong companies create momentum, sign an attractive LOI, then lose leverage because books were messy, customer concentration was understated, or working capital mechanics were poorly understood. I have also seen disciplined sellers use the post-LOI stage to validate value, tighten narratives, and close on favorable terms.

This guide explains the deal stages that follow an LOI and how they fit together. Because this article is a hub for understanding deal stages, it covers the full sequence: confirmatory diligence, quality of earnings review, legal and operational review, management meetings, financing and lender diligence, purchase agreement negotiation, working capital and earn-out mechanics, closing conditions, signing, funding, and post-close transition. If you want to understand the M&A process after signing an LOI, this is the framework.

Stage One: Exclusivity Begins and the Deal Clock Starts Running

Once the LOI is signed, the exclusivity period starts. In many lower middle-market transactions, that period ranges from 45 to 90 days, though larger or more complex deals can run longer. During exclusivity, the seller agrees not to solicit or negotiate with other buyers. That no-shop clause gives the buyer confidence to spend money on accountants, lawyers, consultants, and lenders. It also shifts leverage. Before the LOI, the seller may have had multiple conversations. After the LOI, the buyer usually becomes the only active path to a close.

This is why LOI quality matters so much. If the exclusivity window is too long, if key business points are vague, or if the buyer included broad retrade language, the seller can get pinned down. The best sellers enter exclusivity with a clear diligence calendar, a defined data room, named workstreams, and agreed expectations around management access. In plain terms, you want a process, not just a promise.

Right after execution, most buyers circulate an initial diligence request list. It can be extensive. Financial statements, bank records, customer contracts, payroll data, tax returns, IP assignments, lease agreements, insurance schedules, litigation disclosures, cybersecurity policies, and HR files are common asks. Serious buyers want to de-risk the acquisition quickly.

Stage Two: Confirmatory Due Diligence Tests the Story

Due diligence is where the buyer verifies whether the business performs the way the seller represented it. This is not one review. It is several simultaneous reviews. Financial diligence asks whether earnings are real, recurring, and transferable. Legal diligence asks whether the company actually owns its assets and is compliant. Operational diligence asks whether the systems, processes, and people can sustain performance after a change in ownership. Commercial diligence asks whether the market, customers, and growth narrative hold up. For technology-enabled companies, cybersecurity and codebase reviews may be added.

Founders often experience diligence as invasive because it is. Buyers are not trying to be rude. They are trying to understand risk. If EBITDA is adjusted upward for owner perks, one-time expenses, or nonrecurring payroll, the buyer will test those add-backs. If a company claims long-term customer loyalty, the buyer may analyze retention by cohort or read change-of-control provisions in top contracts. If the seller says the business is not founder dependent, the buyer will assess whether key relationships actually sit with employees or still route through the owner.

The practical lesson is simple: due diligence does not create most problems. It exposes them. That is why preparation drives outcomes.

Stage Three: Financial Diligence and the Quality of Earnings Review

In many private company sales, especially when private equity is involved, the buyer hires an accounting firm to conduct a quality of earnings review, often called a QofE. This review is more analytical than a standard tax return review. Its purpose is to normalize earnings, test revenue recognition, review margin consistency, evaluate customer concentration, and assess working capital needs. A QofE frequently becomes the backbone of lender underwriting and investment committee approval.

If you want a direct answer to what happens after signing an LOI financially, it is this: your EBITDA gets challenged. Revenue may be reclassified. Expenses may be moved. Owner compensation may be normalized. Nonrecurring items may be accepted or rejected. Receivables aging may be discounted. Deferred revenue treatment may affect value. Inventory reserves, if relevant, may become a serious issue.

In founder-led businesses, common pressure points include cash-basis books, aggressive add-backs, unclear payroll allocations, and personal expenses running through the company. In agencies and service firms, revenue cutoff, labor capitalization, and project profitability often get attention. In product businesses, channel concentration, returns, inventory obsolescence, and gross margin swings matter more. The cleaner and more GAAP-aligned the reporting, the faster this stage moves.

Stage Four: Legal, Tax, and Operational Diligence Run in Parallel

While accountants review earnings, lawyers review structure and risk. Legal diligence typically covers corporate records, cap table accuracy, shareholder approvals, material contracts, employment matters, intellectual property, litigation, permits, environmental exposure where relevant, and regulatory compliance. If you are selling a technology company, buyers will look for invention assignment agreements, contractor IP ownership, privacy policies, and software license compliance. If you are selling a service company, they will focus heavily on customer agreements, non-solicit language, and team retention risk.

Tax diligence also matters more than many founders expect. Buyers and their advisors may review federal, state, local, payroll, sales and use, and sometimes international tax exposure. Nexus issues, misclassified workers, or unfiled sales tax can create price adjustments or escrow demands. In asset sales, tax consequences differ meaningfully from stock sales, which is why tax planning should start before a company goes to market, not after the LOI arrives.

Operational diligence is more commercial and practical. Buyers want to understand how the company runs day to day. They may examine SOPs, KPI dashboards, sales pipeline management, vendor concentration, churn patterns, and management depth. This is where a founder-dependent company gets exposed fast.

Stage Five: Management Meetings and Buyer Confidence Building

After signing an LOI, most buyers want structured access to leadership. That often includes meetings with the founder, CFO or controller, head of sales, operations leader, and sometimes technical or product leadership. These sessions are not casual. They are designed to test whether the team can explain the numbers, defend the strategy, and operate under pressure.

Good management meetings build conviction. Weak ones create concern. If the seller says one thing and the controller says another, trust drops. If management cannot explain margin compression, customer churn, or forecast assumptions, lenders and investment committees get nervous. The best teams prepare like it is a board meeting. They know the numbers cold. They align on the narrative. They acknowledge risks directly and explain mitigation clearly.

This is one reason I consistently tell founders to keep running the business like it is not for sale. Buyers are not only buying historical results. They are buying confidence in the team’s ability to deliver future performance.

Stage Six: Definitive Agreement Negotiation Turns Headlines Into Real Terms

The LOI is a sketch. The purchase agreement is the real contract. After signing the LOI, counsel for both sides begins negotiating the asset purchase agreement or stock purchase agreement, plus related documents such as employment agreements, restrictive covenants, escrow agreements, transition services agreements, and rollover equity documents if applicable.

This stage decides who bears risk. Purchase price is only one piece. Sellers need to understand indemnification caps, survival periods, baskets, escrow size, fraud carve-outs, debt definitions, working capital targets, and earn-out formulas. Buyers usually push for broad representations and warranties. Sellers want narrow, accurate representations with limited post-close exposure. That push and pull is normal.

Two concepts regularly confuse founders: debt-like items and net working capital. Debt-like items can include unpaid bonuses, transaction expenses, tax liabilities, customer deposits, capital leases, and deferred compensation, not just bank debt. Net working capital establishes how much normalized operating capital the seller must leave in the business at close. Miss this, and you can feel like purchase price disappeared overnight.

Stage Seven: Financing, Third-Party Approvals, and Closing Conditions

Not every buyer needs financing, but many do. Private equity groups often combine equity with senior debt, mezzanine debt, or unitranche facilities. Independent sponsors may rely on committed capital plus lender approvals. Strategic buyers may need board signoff or internal capital committee approval. If real estate is involved, landlord consents can matter. If major customers have change-of-control clauses, approvals may be required there too.

This means a deal can look agreed and still not be closable. Closing conditions commonly include completed diligence, finalized financing, third-party consents, no material adverse change, accuracy of representations, and ordinary course operation of the business through close. Sellers should track these items in a live closing checklist with owners and deadlines.

Understanding deal stages means recognizing that closing is not one event but the completion of dozens of smaller approvals. That is why disciplined project management matters so much after an LOI.

Stage Eight: Signing, Funding, and the Post-Close Transition

In some deals, signing and closing happen simultaneously. In others, documents are signed first and funding occurs later once remaining conditions are met. At closing, signatures are collected, wire instructions are confirmed, liens are released, debt is repaid, escrows are funded, and ownership transfers. Then the integration or transition period begins.

For sellers, this next chapter matters. You may have consulting obligations, an employment agreement, an earn-out, or a rollover stake. Employees need communication. Customers may need reassurance. Systems and reporting may change immediately. If the buyer is strategic, integration can move fast. If the buyer is financial, the first 100 days often focus on planning, KPI alignment, leadership retention, and growth priorities.

In practical terms, what happens after signing an LOI in a business sale is that the transaction enters its highest-risk stage. The LOI opens exclusivity, diligence verifies the story, advisors pressure-test earnings and legal exposure, the purchase agreement allocates risk, financing and approvals clear the path, and closing converts intent into money. Founders who understand these deal stages do better because they stop treating the LOI as the win and start treating it as the beginning of execution. If you are preparing for a sale, study the M&A process early, tighten your financials, reduce founder dependence, and build a company that can withstand scrutiny. That preparation is what gets deals across the finish line. For a deeper roadmap, read The Entrepreneur’s Exit Playbook and explore more M&A process resources at Legacy Advisors.

Frequently Asked Questions

What usually happens immediately after a letter of intent is signed in a business sale?

Once the LOI is signed, the deal moves from high-level negotiation into execution. This is the point where the buyer begins formal due diligence, legal counsel on both sides starts drafting and negotiating definitive transaction documents, and the seller shifts from telling the story of the business to proving every major assumption behind the proposed deal terms. In practical terms, that means the buyer will typically request detailed financial statements, tax returns, customer and vendor contracts, employee information, compliance records, intellectual property documentation, and operational data. The seller is often expected to organize this material in a data room and respond quickly to follow-up questions.

At the same time, the exclusivity or no-shop period in the LOI usually becomes very important. During this window, the seller generally agrees not to solicit or negotiate with other buyers, which gives the buyer confidence to spend time and money on diligence and legal work. Management presentations, site visits, quality of earnings reviews, lender underwriting, and discussions around working capital, debt, and closing adjustments also tend to happen during this stage. Although many founders feel like the hard part is over once the LOI is signed, this phase is often the most demanding because the buyer is testing whether the business actually matches the assumptions that supported the initial offer.

Is a signed LOI legally binding, and can either side still walk away?

In most business sales, the LOI is only partially binding. The economic terms, such as purchase price, structure, rollover equity, earnouts, or seller financing, are often expressed as a statement of intent rather than a final legal commitment. That means either party may still walk away if diligence uncovers issues, financing falls through, or the parties cannot agree on the definitive purchase agreement. However, many LOIs do contain binding provisions, and those sections matter a great deal. Common binding terms include confidentiality, exclusivity or no-shop obligations, access to information, expense allocation, governing law, and sometimes dispute resolution provisions.

This is why an LOI should never be treated as a casual summary. Even if the headline price is nonbinding, the seller may still be legally restricted from talking to other buyers for a set period, and the buyer may have certain rights to information or process control during the diligence window. In addition, the LOI often shapes the negotiation of the final deal documents because it sets expectations about structure and major assumptions. So yes, a party can often walk away before signing the purchase agreement, but not always without consequences. Whether doing so is permissible, strategic, or risky depends on the exact language of the LOI and the facts that emerge after signing.

What is due diligence after an LOI, and why does it affect whether the deal closes?

Due diligence is the buyer’s deep investigation into the company after the LOI is signed. It is designed to confirm that the business is what the seller represented it to be and that there are no hidden problems that would change value or increase risk. Financial diligence looks at revenue quality, margins, customer concentration, normalizing adjustments, debt, working capital trends, and cash flow. Legal diligence reviews contracts, litigation exposure, corporate records, regulatory compliance, leases, intellectual property, employment matters, and ownership of key assets. Operational and commercial diligence may examine supply chain dependencies, customer retention, technology systems, sales pipelines, and competitive positioning.

This process directly affects whether the deal closes because buyers rely on diligence to validate the assumptions behind their offer. If diligence confirms the business is stable, compliant, and performing as expected, the parties are more likely to move smoothly toward closing. If diligence reveals issues such as overstated earnings, undocumented add-backs, weak internal controls, customer churn, tax exposure, or contractual restrictions, the buyer may seek a lower price, demand stronger indemnification protections, revise the deal structure, or terminate discussions entirely. For sellers, the lesson is simple: the post-LOI phase is not about persuasion alone. It is about substantiation, speed, and credibility. A well-prepared seller who can produce organized, accurate records is in a much stronger position to preserve value and keep momentum.

Can the purchase price or deal terms change after the LOI is signed?

Yes, deal terms can absolutely change after the LOI, and that is one of the most important things founders need to understand. The LOI typically reflects a preliminary valuation based on limited information and several assumptions about financial performance, risk, debt levels, working capital, customer stability, and legal or operational exposure. Once full diligence begins, the buyer may discover facts that support the original terms, or facts that cause the buyer to ask for revisions. Common post-LOI changes include adjustments to purchase price, changes in the amount of cash paid at closing, new earnout provisions, rollover equity requirements, escrow or holdback amounts, and revised working capital targets.

Not every change is a bad sign. Some adjustments are normal and result from clarifying details that were not fully addressed in the LOI stage. For example, the parties may refine how working capital is measured, confirm which liabilities will remain with the seller, or revise tax structuring to improve the outcome for both sides. That said, material changes can create serious tension, especially if the seller believes the buyer is retrading the deal unfairly after locking up exclusivity. The best protection against disruptive price changes is a carefully negotiated LOI, strong preparation before going to market, and transparent disclosure during the process. Buyers expect their assumptions to hold up; when they do, pricing tends to remain more stable.

What should a seller focus on between signing the LOI and closing the transaction?

Between LOI signing and closing, the seller’s job is to protect value, maintain momentum, and avoid surprises. First, the business still has to perform. Buyers are not purchasing a historical set of numbers alone; they are buying a company that must continue operating effectively through closing. That means leadership should stay focused on sales execution, customer relationships, employee retention, cash flow management, and operational consistency. A drop in performance during exclusivity can quickly create leverage for the buyer to renegotiate terms. Second, the seller needs to run a disciplined diligence process by organizing documents, assigning internal owners to answer requests, and working closely with accountants, attorneys, and M&A advisors to resolve issues before they become major obstacles.

Sellers should also pay close attention to the purchase agreement and related closing documents, because this is where risk allocation becomes real. Key points often include representations and warranties, indemnification obligations, escrows, earnout mechanics, noncompete provisions, employment or consulting arrangements, and post-closing adjustments. Founders should not focus only on the headline valuation; they should also understand how much cash they will actually receive at closing, what conditions must be satisfied, what claims could arise after closing, and what role they are expected to play going forward. In short, the period after signing an LOI is about disciplined execution. Deals usually close not because the LOI looked attractive, but because the seller kept the business strong, handled diligence well, and negotiated the final documents with care.