If you have ever thought about selling your business or acquiring another, chances are this question has crossed your mind: “How long does an M&A actually take?”

It is one of the most common questions we get, and honestly, it is also one of the most misunderstood.

An M&A transaction is not like selling a property or handing over the keys to a new owner. From the first proper conversation with a professional advisor to the day the final agreement is signed, it usually takes somewhere between 12 to 18 months. And if you count post-merger integration (PMI), the full journey can stretch another 6 to 12 months beyond that. Some deals do close faster, especially when both parties are well-prepared and the business is straightforward, but those are the exception rather than the norm. In fact, many SME deals end up taking longer than owners initially expect.

So why does it take this long? In this article, we will talk through the realistic timeline of an M&A deal, what happens at each phase, and how preparing early can actually make the whole journey a lot more smoother.

Why Does the Timeline Vary So Much?

A lot of business owners turn to M&A because it feels like a more flexible way out compared to an initial public offering (IPO). And that is true, but “more flexible” does not necessarily mean “fast”, and that is one of the most common misconceptions we come across.

The truth is that every deal carries its own DNA. The industry you are in, the size of your company, your financial position, your ownership structure, and geographical locations all play a role in shaping the timeline. For instance, a logistics company with a fleet of vehicles, leased warehouses, and licensing obligations will move through asset and compliance checks differently from, say, a SaaS firm whose primary value lies in its intellectual property (IP), recurring revenue, and engineering talent.

There are also a few external things that can influence the process:

• Regulatory touchpoints. Deals in regulated industries such as financial services, healthcare, or telecommunications, may require clearance from authorities such as the Monetary Authority of Singapore (MAS), the Competition and Consumer Commission of Singapore (CCCS), or sector-specific regulators.
• Cross-border complexity. When the buyer sits outside Singapore, for example, in Japan, ASEAN, or further afield, differences in legal systems, accounting standards, language, and business culture all need to be bridged.
• Deal size and structure. Multi-entity groups, deals involving subsidiaries across jurisdictions, or transactions with unusual payment structures naturally take longer.
• Clarity of intent. Deals where the seller’s objectives or non-negotiables shift mid-process are almost always the slowest to close.

In practice, these factors are often interlinked, and one issue can often lead to another. That said, most can be managed with early preparation, well-organized documentation, clear communication, and the right advisors throughout the process.

The M&A Journey, Step by Step

While every deal looks a little different, most M&A transactions move through six clear stages. Here is what actually happens at each one, and roughly how long it tends to take.

#1 – Initial Consultation & Assessment (1–2 months)

Every M&A journey starts with a conversation. This is where the advisor sits down with the business owner to explore what M&A could look like for them, whether the motivation is succession, a strategic partnership, or the next stage of growth. The aim of these early meetings is to get a clear picture of the owner’s goals, concerns, and timeline, alongside a good understanding of the business itself and the situation it is in today.

This is also when the advisor walks the business owners through how the M&A process actually works, sets realistic expectations, and assesses whether the company is in a position to move forward. Sometimes, owners come away from these conversations realising they would benefit from a little more time to prepare before taking the next step, and that is perfectly normal. In fact, it is a far better one than rushing in unprepared.

#2 – Preparation (3–6 months)

Once the decision to move forward is made, the next few months are dedicated to preparation, and this is arguably where the success of the entire deal is shaped. Working closely with the advisor, the owner gathers and organises everything a buyer will eventually want to review, for example, audited financials, shareholding structure, key contracts, licences, operational workflows, and so on. A Non-Disclosure Agreement (NDA) is signed early in this stage to ensure that all shared information remains strictly confidential.

A valuation is then carried out to establish a fair market range for the business. This gives the owner a grounded sense of where the company stands today, and where there may still be room to enhance its attractiveness to potential buyers. The advisor will also recommend a suitable transaction structure such as share sale, asset sale, or something more tailored, based on the owner’s objectives.

Wrapping up this stage is the Information Memorandum (IM), a detailed document that introduces the business to potential buyers for their consideration. It presents the company in a structured, professional manner, highlighting its key strengths and business model while keeping sensitive information strictly confidential. The quality of this document plays an important role in shaping the level and seriousness of interest the business attracts.

#3 – Matching & Top Management Meetings (1–3 months)

With the IM ready, the conversation begins to shift outwards. The advisor will start identifying and approaching potential buyers such as companies in the same industry, regional investors, or strategic partners from Japan or other ASEAN countries – all based on the business owner’s objectives and the type of partnership being sought.

When genuine interest is expressed, top management meetings are arranged between both parties. These go beyond commercial discussions; they are an opportunity for both sides to evaluate alignment on a deeper level, whether the visions are compatible, the cultures complementary, and the values consistent. Multiple rounds of conversation are common at this stage, and that is precisely the intent, because the mutual trust and synergy established here are what carry the deal through the more complex negotiations that follow.

#4 – Execution of MOU or LOI (1-2 months)

When both parties feel sufficiently aligned and agreed to proceed after the initial discussions, the buyer will typically issue a Letter of Intent (LOI) or Memorandum of Understanding (MOU). This document outlines the headline terms of the proposed deal, including the indicative valuation, the deal structure, the key conditions, and the exclusivity period for due diligence.

It serves as a clear signal that both parties are committed to moving the transaction forward seriously, though it is important to note that this is not yet the final, binding contract.

#5 – Due Diligence (3–9 months)

If preparation is the most important stage of the M&A journey, due diligence is by far the most demanding and often the most time-intensive too. At this point, the buyer’s team, typically supported by lawyers, accountants, and tax advisors, conducts a comprehensive review of the business across several key areas:

• Financial – verifying statements, cash flow, debts, and working capital
• Legal – reviewing contracts, ownership, intellectual property, litigation, and regulatory compliance
• Tax – confirming positions and identifying any exposures with IRAS or overseas tax authorities
• Commercial / Operational – assessing customers, suppliers, market position, and operations

A useful way to picture it is like a full structural survey before someone purchases a property. The buyer needs to be confident that there are no hidden cracks beneath the surface before committing to the transaction.

For business owners who have prepared well, due diligence can move through in a few months. However, for those who enter the process underprepared, such as missing records, unresolved tax matters, or undocumented related-party transactions, it can stretch on for nearly a year. This is why early preparation is so important, and keeping financial records and key documents well-organised from the outset can significantly shorten the due diligence process and help avoid unnecessary delays.

#6 – Final Agreement & Closing (1–3 months)

Once due diligence is wrapped up and any outstanding issues are addressed, both parties move to the final negotiations and signing of the Share Purchase Agreement (SPA), which is the binding contract that formalises the deal.

The SPA outlines the specifics of the transaction, including what is being sold, the agreed purchase price, the payment mechanism (cash, deferred, earn-out, or a combination), the conditions to be fulfilled before completion, the warranties and representations, and any transitional or non-compete arrangements. From there, the necessary regulatory and license approvals are secured, funds are transferred, and ownership officially changes hands.

However, closing the deal is not quite the finish line. What follows is post-merger integration (PMI), which can take another 6 to 12 months. This is the stage where teams, systems, processes, and culture are brought together, and where the true value of the deal is ultimately realised, or, in some unfortunate cases, lost. Cross-border transactions tend to sit at the longer end of this range, simply because there is more to align across geographies, regulations, and business cultures.

Practical Tips for a Smoother M&A Journey

While some delays are simply part of the M&A process, there are practical steps owners can take to keep things moving along smoothly.

1. Start planning and preparing early. If you envisage stepping back in two to three years, the preparation work should already be underway. Working backwards from your target exit window gives you the runway to clean up documentation, strengthen earnings, and position the business properly.

2. Be clear on what you actually want. Clear objectives shape every part of the process that follows – from the type of buyer worth approaching to the structure of the deal itself. They also make the matching and negotiation stages far more efficient, reducing the time spent on conversations that were never likely to lead anywhere.

3. Begin the process by choice, not by circumstance. Many SME owners only turn to M&A when external pressures like declining health, sudden market shifts, or financial strain, leave them with limited options. Decisions made under such circumstances often result in prolonged negotiations or less favourable terms, as the owner’s bargaining position is already compromised. In contrast, beginning the process while the business is still performing well allows for greater control over the timeline, more flexibility in shaping the deal, and time to resolve internal matters before they become obstacles.

4. Engage the right advisor. An experienced M&A advisor does more than make introductions. They coordinate the moving parts, anticipate issues before they become problems, manage the emotional weight of the process, and keep communication clear and consistent between both sides. At Nihon M&A Center Singapore, our advisors work with an extensive network of strategic buyers across Japan and Southeast Asia, supported by decades of cross-border experience. That network, combined with disciplined process management, is often what allows our clients to reach the right buyer faster, and on better terms. (Read more about the role an experienced advisor plays in ensuring a smooth M&A process here.)

So, How Long Does an M&A Really Take?

The honest answer: as long as the business and the deal require. As a general benchmark, however, owners should be prepared for at least 12 to 18 months from the first conversation to signing, and longer when PMI is part of the picture.

That said, the more meaningful question is not “How quickly can the deal close?” but “How well can it close?” Speed without preparation almost always means concessions on price, terms, or both. Preparation without urgency, on the other hand, allows the process to unfold with the clarity and control needed to close on the right terms.

At its core, M&A is not simply a transaction. It is the next chapter of something an SME owner has spent decades building with care and commitment. And in the end, the timeline matters far less than the outcome. A successful handover protects the people behind the business, preserves the legacy that has been built, and positions the company for what comes next.

Considering your M&A options? Whether you are exploring succession, planning your next growth move, or simply wanting to understand where your business stands today, the team at Nihon M&A Center Singapore is here to help. Get in touch for a conversation and let’s map out what the journey could look like for you.