What Investment Banks Actually Do in a Merger or Acquisition
Most people hear “investment banking” and picture trading floors or IPOs. But a huge share of what these firms actually do has nothing to do with the stock market at all, it’s guiding companies through the process of buying, selling, or combining with another business. This is where VSURE spends a lot of its time with founders and business owners, well before a deal is even on the table.
Whether you’re the one buying, the one selling, or a founder just trying to understand what a banker actually does in the room, here’s what the process really looks like.
The advisory phase comes first, not the deal itself
Before any negotiation starts, an investment bank’s job is research and judgment. They study the industry, the competitive landscape, and where the business actually fits into a bigger picture. On the buy side, that means screening potential targets based on strategic fit, not just financial size. On the sell side, it means identifying which buyers, whether strategic acquirers or private equity firms, are worth approaching at all.
This is what’s often called strategic advisor work, and it’s arguably the highest-value part of the whole process. The wrong deal at the right price is still the wrong deal, and a good bank’s first job is telling clients that before they waste months chasing it.
If you want a deeper breakdown of exactly what strategic advisory covers day to day, this piece on what is strategic advisory walks through it well.
Valuation is where the real disagreements happen
Every deal eventually comes down to one question: what is this company actually worth. Investment banks answer that using a mix of methods, comparing recent transactions in the same sector, running discounted cash flow models, and benchmarking against similar public companies.
This is where valuation advisory earns its reputation as the trickiest part of the job. Sellers almost always think their business is worth more than the numbers suggest, buyers almost always think the opposite, and the bank’s role is to bring both sides to a number that’s actually defensible, not just optimistic.
Understanding your own valuation before you’re in a negotiation, not during one, is one of the biggest advantages a business owner can have. VSURE works through this exact exercise with clients before they ever sit across from a buyer or seller.
Deal structuring: the part most people never see
Once a valuation range is agreed on, the deal still has to be structured. This covers whether it’s a stock purchase or an asset purchase, how much is paid upfront versus over time, and what happens with existing debt. It also covers what kind of merger this actually is.
A horizontal merger, where two companies in the same industry combine, comes with different regulatory scrutiny than a vertical merger between a company and its supplier or distributor. Investment banks navigate that difference from the start, because getting the deal type wrong early can cost months later when regulators get involved.
Due diligence and negotiation
Once the structure is set, the bank coordinates due diligence, financial, legal, tax, and operational, often pulling in outside specialists but managing the process centrally so nothing falls through the cracks. Then comes negotiation, where the bank works to close the gap between what a buyer wants to pay and what a seller wants to receive.
This is usually where deals either move forward or quietly die. A banker who has run dozens of these negotiations knows which points are worth fighting over and which ones aren’t, and that judgment is often worth more than any spreadsheet.
Closing and what happens after
Even after both sides agree, there’s regulatory and legal compliance to clear before the deal actually closes. Once it does, the real work often continues into post-merger integration, making sure the combined business actually functions the way it was supposed to on paper.
Why this matters even if you’re not planning a mega deal
A lot of business owners assume investment banking is only relevant for billion-dollar transactions. In reality, this same process, strategic advisory, valuation, structuring, and negotiation, applies just as much to a smaller founder-led acquisition or a business owner exploring an exit.
Knowing what to expect from an investment bank, and what questions to ask before signing on with one, is often the difference between a deal that goes smoothly and one that drags on for a year. That’s the kind of guidance VSURE brings to founders navigating their first M&A conversation, so the process feels less like a black box and more like a plan they actually understand.
