The M&A Sale Process: A Step-by-Step Guide for Business Owners
Most founders sell one business in their lifetime. The M&A sale process is unfamiliar, high-stakes, and runs for months while you are still trying to run your company. Understanding how it works — what happens at each stage, who does what, and where the key decisions lie — is the most important preparation you can do before engaging any advisor or approaching any buyer.
Phase 1: Preparation (4–8 weeks)
The preparation phase is where the foundation of a strong outcome is laid. It involves: selecting and engaging your M&A advisor; conducting a thorough financial analysis and preparing a normalised EBITDA schedule; commissioning a sell-side QoE if appropriate; identifying and prioritising the buyer universe; preparing the Confidential Information Memorandum (CIM) and financial model; and developing the management presentation. Well-prepared sellers run faster processes, face fewer diligence surprises, and achieve better outcomes. Cutting corners in preparation to go to market faster almost always costs more than it saves.
Phase 2: Marketing (4–8 weeks)
The marketing phase involves targeted outreach to qualified buyers, managing the NDA process, distributing the teaser (a short anonymous document about the business), and providing the CIM and financial model to parties who sign NDAs and express serious interest. Qualified buyers are invited to submit Indications of Interest (IOIs), which set out their preliminary valuation and deal structure thinking. The marketing phase is where competitive tension is created — the goal is to have multiple qualified buyers engaged simultaneously, which is the mechanism that drives price.
Phase 3: Management presentations and final bids (4–8 weeks)
Management presentations are meetings between the seller's management team and serious buyer candidates. They provide an opportunity to present the business in depth, answer buyer questions, and — critically — assess buyer fit beyond just price. After management presentations, buyers are invited to submit formal bids (Indications of Interest or Letters of Intent). The process of evaluating bids, selecting the preferred buyer, and negotiating the LOI is the highest-leverage period in any sale process. The advisor's role here — maintaining competitive tension, managing buyer communications, and negotiating terms — is where value is most directly created or destroyed.
Phase 4: Exclusivity and due diligence (6–12 weeks)
After the LOI is signed and exclusivity is granted, the buyer commences formal due diligence — financial, legal, commercial, technical, and tax. This is the most intensive period of the process for management, who must support the diligence process while continuing to run the business. The data room — a secure, organised repository of all relevant business documents — must be prepared in advance. Well-prepared data rooms accelerate diligence; poorly prepared rooms extend it and create opportunities for buyers to surface issues. The QoE, legal review, and commercial diligence proceed simultaneously during this period.
Phase 5: Documentation and closing (6–12 weeks)
Once due diligence is substantially complete, legal documentation begins in earnest. The Share Purchase Agreement (SPA) — the principal legal document of the transaction — is negotiated between the parties' lawyers. Key SPA terms include the representations and warranties, indemnification provisions, conditions to closing, and any closing adjustments. Final working capital and net debt calculations are performed at closing. Regulatory filings (HSR in the US, merger control in Europe) are made if required. Closing typically occurs within days of all conditions being satisfied — at which point funds flow to the seller.
Key takeaways
A well-run M&A sale process typically takes 5–9 months from engagement to closing.
Preparation is the highest-leverage phase — the quality of materials and financial analysis determines the quality of the process.
Creating competitive tension through simultaneous engagement of multiple qualified buyers is the mechanism that drives price.
The period between LOI signing and closing is the most intensive for management — data room preparation is essential.
The SPA negotiation is where the legal and financial details of the deal are finalised — experienced legal counsel is essential.
Related M&A terms
Continue building your M&A knowledge with these related guides.
Considering selling your business?
Understanding the mechanics is preparation. The conversation about your specific business — what it is worth in the current market, what a sale process would look like, and whether the timing is right — is a different one. We offer an initial consultation at no charge and without obligation. If it is not the right time, we will tell you that too.