As former tech entrepreneurs with over two decades of experience in M&A, we have seen this question come up for many tech founders who starts thinking about an exit. At its core, it is rooted in a deeper doubt: who to trust to lead a process that is the culmination of years of hard work and, potentially, the concentration of a significant portion of personal net worth. Trust, professionalism, expertise, and track record all matter. But so does understanding who is running the process, what their incentives are, and how they work.
Both M&A advisors and investment banks facilitate company sales, but they serve different deal profiles, carry different infrastructure, and deliver different levels of senior involvement throughout the process.
For large corporations executing multi-billion-dollar transactions, investment banks are the appropriate counterpart. They provide the institutional reach, capital markets capabilities, and global distribution those transactions require. For mid-market SaaS and tech founders with $5M or more in revenue considering exits in the $20M to $500M enterprise value (EV) range, the decision framework is different. At that scale, the right choice depends on deal size fit, sector expertise, and who will run the process day to day.
This article covers the structural differences between M&A advisors and investment banks, how deal size determines which type of firm is appropriate, and a practical framework for evaluating advisors before signing an engagement letter.
What is an M&A advisor, and how does it differ from an investment bank?
An M&A advisor is a specialized firm that manages the end-to-end sale of a privately held company, typically working exclusively on sell-side transactions in the mid-market. The scope is focused: position the business accurately, run a competitive process, and close on the best available terms.
An investment bank is a full-service financial institution providing a broad range of capital markets services: IPOs, debt placement, underwriting, equity research, and M&A advisory. Bulge bracket institutions, including Goldman Sachs, JPMorgan, Morgan Stanley, and Bank of America, sit at the top of this category. Their M&A practices are one division among many, operating alongside trading desks, lending books, and institutional client coverage.
Both firm types can advise on a sale. The distinction is what surrounds the advisory work. At a large investment bank, the M&A team shares infrastructure, compliance overhead, and senior attention with the rest of the institution. At a specialist M&A advisory firm, the entire business is built around one outcome: closing the transaction. For a founder selling a $60M SaaS company, the bank's capital markets capabilities, its bond desk, and its IPO pipeline are not relevant to the mandate. What determines the outcome is who builds the CIM, who manages the buyer process, and who leads negotiations under pressure.
The CIM (Confidential Information Memorandum) is the primary marketing document used to introduce the business to potential buyers. It establishes the narrative, anchors the valuation, and shapes how each buyer in the process first evaluates the company. Producing a strong CIM requires deep sector knowledge. Defending it under diligence pressure requires the same.
Deal size: the clearest dividing line
It’s practical to think of the advisory market as structured in tiers. Each tier is built for a different transaction profile, and understanding where a deal sits determines which firm types are both available and likely to prioritize the mandate.
Below is a breakdown of each.
- Business brokers typically handle transactions below $5M in enterprise value. Their processes are straightforward, often involving direct outreach to individual buyers and standard asset transfers. For a SaaS company with $1M ARR, a broker may be appropriate. For a company with $10M ARR, the fit breaks down: a broker's process is not designed to price recurring revenue, retention, or the metrics that SaaS buyers use to value software businesses.
- Boutique M&A advisory firms operate in the $5M to $500M EV range, with a focus on founder-led companies, typically bootstrapped and/or VC-backed. The strongest of these firms combine institutional-grade processes with genuine sector depth. They run structured competitive processes, build curated buyer lists, and ensure that the metrics driving valuation, including ARR, NRR, CAC payback, and the Rule of 40, are accurately represented and defended through diligence.
For a broader view of how firm types in this space compare, see our guide to the mid-market M&A advisory landscape.
- Investment banks, from mid-market firms to bulge bracket institutions, focus primarily on transactions above $500M. The largest banks, including JPMorgan, Goldman Sachs, and Bank of America, apply minimum transaction thresholds of at least 3 figures before accepting a sell-side mandate. For founders whose enterprise value sits below their preferred range, a large investment bank is structurally might not the right counterpart. The deal would compete for attention internally against mandates that are ten times its size.
This breakdown arguably reflects a structural reality rather than a qualitative judgment. Bulge bracket institutions are optimized for large, complex, capital-intensive transactions. And they excel in that upper market.
The advisory process for a mid-market founder-led SaaS company, on the other hand, requires a different set of capabilities: deep familiarity with SaaS buyer dynamics, a curated network of PE sponsors and strategic acquirers active in that segment, and the senior involvement to run the process competitively from start to finish.
M&A advisor vs investment bank: key differences for tech founders
The table below summarizes the structural differences relevant to SaaS and tech founders evaluating advisors for a mid-market exit.
Process depth and senior involvement
The practical distinction between a boutique M&A advisor and a large investment bank becomes most apparent at the level of who is running the deal.
At a large bank, mid-market mandates are frequently managed by analyst and associate teams. The senior partner who won the engagement presents at kickoff and returns at signing. The intermediate process, covering buyer outreach, management presentations, diligence coordination, and negotiation, is handled by junior professionals who may have strong technical skills but limited direct leverage with buyers and limited experience positioning a SaaS business to a private equity sponsor or corporate acquirer.
At a specialist boutique, the partner leading the mandate typically runs the transaction through each stage: business valuation, CIM preparation, buyer list construction, process management, negotiation, and diligence support. A well-run sell-side process takes 6 to 12 months. The quality of senior involvement throughout that period, not only at key milestones, directly affects outcomes.
For SaaS and tech founders, senior involvement is particularly consequential because of the metrics-intensive nature of software company valuation. A buyer's diligence team will scrutinize ARR quality, net revenue retention (NRR), CAC payback periods, churn cohorts, and gross margin structure. An advisor who has benchmarked these figures against comparable transactions and can defend them when a buyer's model applies pressure will protect the valuation established at the start of the process. That requires both sector expertise and genuine senior engagement in the diligence phase.
It also reinforces why engaging an M&A advisor 9 to 18 months before a target close is the standard recommendation. Early engagement creates time to optimize financial reporting, address gaps in the metrics narrative, and enter the formal process in the strongest possible position.
This short explains the difference between an investment bank and a boutique M&A advisory firm for tech founders, including deal size thresholds, senior involvement, and how each approach impacts exit outcomes.
M&A Advisor Fee structures
Both M&A advisors and investment banks structure fees around a success fee paid at closing, typically calculated using the Lehman Formula or a modified version of it.
The Lehman Formula is a traditional tiered fee structure used in both M&A and capital raising transactions to calculate an advisor’s success fee based on the size of the deal. Originally developed by Lehman Brothers, it applies higher percentages to the first portion of the transaction value and lower percentages to the remaining amount.
Therefore, under this model, the fee is tiered as a percentage of transaction value, with the percentage declining as deal size increases.
For mid-market transactions, 3–6% is the standard success fee range for deals under $50M in enterprise value, with fees in the 2–4% range for transactions in the $50M–$200M band. For large-cap deals above $500M, investment banks typically charge 1–2%. The higher percentage on smaller transactions reflects the comparable advisory workload relative to deal size: a $30M SaaS transaction involves substantially similar process work to a $150M one.
Beyond the success fee structure, a meaningful distinction is whether a retainer is required at all. Most advisory firms charge a monthly engagement fee, typically $5,000 to $10,000 per month, often credited against the success fee at close. This structure allows firms to cover the upfront work involved before a transaction closes, and to manage the risk of a deal that takes longer than expected or does not complete.
A success-only fee model, like at L40º, where no retainer is charged, creates full alignment between the advisor's economics and the founder's outcome. When the advisor is compensated exclusively on close, every strategic decision in the process, from how the business is positioned to which buyers are approached and when to push back on terms, is made with a single objective: maximizing the outcome at closing.
Understanding a firm's fee structure and what each component funds is one of the more important due diligence questions before signing an engagement letter.
Buyer access and why it determines process outcomes
The choice of advisor is directly connected to the question of buyer access. Mid-market SaaS transactions are typically driven by two buyer categories: financial buyers, primarily private equity sponsors, and strategic acquirers. Each applies a different valuation framework, runs a different diligence process, and has different priorities in a transaction.
Private equity sponsors evaluate recurring revenue quality, net revenue retention, margin profile, and the potential for platform expansion or operational improvement. Strategic acquirers are often paying for product capability, customer base, or market position, and may support valuations that a purely financial model would not. Running a process that surfaces both buyer types, creates genuine competitive tension between them, and positions the business accurately for each requires a buyer network built specifically around active SaaS acquirers in the relevant segment.
Large investment banks maintain extensive relationships with Fortune 500 boards, sovereign wealth funds, and institutional investors. For a large-cap cross-border transaction, that reach is a material advantage. For a founder-led SaaS company at $50M EV, the relevant question is different: which PE sponsors are actively building platforms in this vertical, which strategics have the strategic rationale and balance sheet to acquire, and how should the process be structured to surface competing offers. That specific, curated buyer access is what a well-positioned specialist boutique provides, and it is why the sell-side advisory process for a mid-market tech company is structured differently from a large-cap M&A transaction.
The L40° Advisor Fit Framework: three questions before engaging
Before committing to any advisory firm, mid-market tech founders benefit from asking three specific questions. The quality of the answers will indicate clearly whether a firm has genuine fit for the mandate or is optimized for a different type of transaction.
1. Does your deal size match their track record?
Inquire about the transactions they’ve closed in the past two years, including their enterprise value and sector. A firm whose typical mandate runs at $500M or above is not structured for a $40M SaaS exit, regardless of institutional reputation. The buyer relationships, the process design, and the senior team's point of reference are calibrated to a different transaction scale. Demonstrated deal experience in the relevant range is a more reliable indicator of fit than proximity to larger mandates.
2. Who runs the deal day to day?
Ask directly for the name and biography of the individual who will own the process from kickoff to close. Furthermore, clarify if this person will lead buyer conversations and be present in diligence sessions. At larger institutions, mid-market mandates are frequently managed primarily by junior professionals after the initial pitch. Knowing in advance who will be the primary point of contact and decision-maker throughout the process is material information when evaluating any firm.
3. Does the advisor understand your metrics?
For SaaS and tech companies, valuation is built on a specific set of figures: ARR quality, net revenue retention, CAC payback period, gross margin, churn cohorts, and the Rule of 40. An advisor who can benchmark these against live transaction comps, identify where the business will face scrutiny, and prepare a defensible position before buyers enter the data room is in a fundamentally different position from one who encounters these metrics for the first time during diligence. In a competitive process, the difference is measurable in valuation outcomes.
Choosing the right advisor for a mid-market tech exit
The distinction between M&A advisor and investment bank is less important than what it implies structurally. Investment banks span a wide spectrum, from elite advisory boutiques working on billion-dollar cross-border transactions to mid-market firms focused on founder-led deals. The relevant question is not which category a firm belongs to, but whether it has the deal size experience, sector expertise, and senior commitment appropriate to the specific mandate.
For SaaS and tech founders with $10M or more in revenue evaluating exits in the $20M to $500M EV range, a specialist boutique M&A advisory firm is the appropriate counterpart in most cases. Investment banks are well-suited to the mandates they are designed for. For mid-market founder-led exits, the right fit is a firm whose team has run comparable processes at this scale, maintains active buyer relationships in the relevant segment, and provides consistent senior involvement throughout.
The M&A Trends for 2026 report indicates that mid-market deal activity is accelerating, with strategic and financial buyers more active than at any point in the past three years. For founders considering an exit within the next 12 to 24 months, beginning the advisor evaluation process now creates the preparation time that makes a process competitive.
The right advisor shapes how a business is positioned, which buyers evaluate it, and how competitive tension develops across the process. For mid-market tech founders, that means selecting a firm with demonstrated experience at the relevant deal size, a curated network of active buyers in the sector, and a senior partner who will lead every consequential conversation from start to close.
If you are evaluating advisors for a SaaS or tech exit in the $20M to $500M range, contact the L40° team for a direct conversation about your business, your process, and what a well-run exit requires.
