Quick answer: Fractional investment banking is part-time or project-based senior help with the sell-side work that precedes and supports a sale: normalizing earnings, building projections, writing the confidential information memorandum, preparing management presentations and guiding diligence. It differs from a full sell-side mandate because it covers a defined scope and the owner or a later advisor runs the rest. Its value depends on a clear scope, including whether buyer contact is part of it.
Key points
- Fractional investment banking is senior sell-side help delivered for a defined scope and period, without a full mandate through closing.
- Common workstreams are earnings normalization, projections, the confidential information memorandum, management presentation preparation and diligence support.
- It differs from a full mandate in who runs the process, and from a general consultant in its buyer-side perspective on what buyers test and how they price.
- The scope decides the value. Define the deliverables, the owner’s inputs, whether buyer contact is included and how the engagement could convert to a full mandate.
What fractional investment banking means
Fractional investment banking is senior M&A help delivered part-time or by project. An experienced deal professional works on a defined set of tasks for a set period, and the owner does not need a full-time hire or a full sell-side mandate to get that experience. The term borrows from fractional finance executives, who serve several companies on a part-time basis, and applies the same idea to the work an investment bank does before and during a sale.
The work is the groundwork on the sell side: converting reported results into earnings a buyer will accept, building projections a buyer can test, writing the confidential information memorandum, preparing management for buyer meetings and guiding the business through diligence. What the model leaves out, unless the scope adds it, is the part that makes a full mandate a full mandate: contacting buyers, running a competitive process and negotiating through closing. The comparison of sell-side and buy-side advisory describes that wider role.
One structural difference follows from the scope. A full mandate is usually paid in part on a completed sale, so the advisor’s incentive is closing. A fractional engagement is usually paid for a defined scope of work and not tied to a closing, so the owner is buying the quality of the work product. The guide to how M&A advisors are paid explains the fee structures that sit behind each.
Who uses it
The model fits owners whose problem is a specific piece of the sale and not the whole of it.
- An owner preparing well before launch. The business needs normalized earnings, supported adjustments and a memorandum before any buyer sees it, and the owner wants senior review of what buyers will ask.
- A business whose finance team lacks sale experience. The controller or CFO keeps good books but has not built a bridge to adjusted EBITDA or run a data room.
- An owner with an inbound offer. Someone has approached the owner, and the owner wants help judging the offer and the numbers behind it before responding.
- A sale already under way with a stretched team. Diligence requests arrive faster than the finance team can answer them, and the owner wants someone to organize and review responses.
- A smaller or earlier-stage business. A full process does not yet fit, and the guide on whether a business is too small for an M&A advisor explains the factors.
An owner considering the model usually compares it with selling alone, and the guide to selling without an advisor lists the jobs that fractional help can take over.
Workstreams and what each produces
The table shows the common workstreams. A given engagement may include some of them and not others, and the scope should say which.
| Workstream | What the advisor produces | What the owner supplies | Limits to understand |
|---|---|---|---|
| Earnings normalization | A schedule of adjustments with support, and a bridge from reported to adjusted earnings. See the guide to normalizing earnings | Monthly statements, payroll detail, invoices and explanations for unusual items | Buyers still test each adjustment, and some will be rejected |
| Financial projections | A model with explicit drivers and more than one case. See the guide to projections for a sale | Backlog, pipeline, pricing and plans | Credibility depends on assumptions the owner can defend |
| Memorandum | A draft that tells the story and presents the financials. See what goes in a CIM | Access to management, customer and market facts, and review time | A memorandum describes the business and does not find buyers |
| Management presentation | A deck, a rehearsal and a list of expected questions. See management presentations | Management time | The owner still has to answer the questions |
| Diligence support | A request tracker, a data room structure and review of responses before they go out. See managing the diligence process | Finance and operations staff time | The buyer’s accountants reach their own conclusions |
| Offer and process advice | Review of indications and letters of intent, with advice on terms | Decisions, and counsel to draft contracts | Advice is not the same as running the process or drafting the agreement |
How it differs from a mandate and from a consultant
These are common patterns, and any firm may differ on a given line.
| Fractional investment banking | Full sell-side mandate | General consultant | |
|---|---|---|---|
| Scope | Defined workstreams for a set period | The whole sale, from preparation through closing | Broad business improvement, or a specific analysis |
| Buyer-side perspective | Built from deal work, so it knows what buyers test and how they price | The same, plus live buyer feedback during the process | Varies, and may not include deal experience |
| Buyer contact and negotiation | Only if added to the scope | A core part of the work | Not part of the work |
| Usual fee basis | Tied to scope and time, not to closing | Often includes a success fee at closing | Tied to scope and time |
| Who runs the sale | The owner or a later advisor | The advisor, with the owner deciding | The owner |
| Fits when | The need is specific or the sale is not yet launched | The owner wants a managed, competitive process | The issue is operating performance or strategy |
The line between the fractional model and a preparation-only engagement is thin, and the guide to choosing between a preparation engagement and a full sell-side mandate compares the options and shows how an engagement can move from one to another.
What to settle in the scope
Fractional engagements succeed or fail on the scope document. Before signing, an owner should be able to answer the following.
- Deliverables. Which documents or analyses, in what form, with how many rounds of review, and by what dates?
- Owner inputs. What must the owner and the finance team provide, and what happens to the schedule if it arrives late?
- People. Who does the work, and how much of their time does the engagement receive?
- Buyer contact. Is any outreach included? If not, who handles it?
- Conversion. If the owner decides to launch, how would the engagement become a full mandate? Are fees credited? Does the work stay with the owner?
- Changes. How are additions to the scope agreed and priced?
- Confidentiality and conflicts. How is information protected, and may the advisor work for a buyer in the same industry?
The walkthrough of an advisory engagement letter explains the clauses behind several of these points, including ownership of work product and termination.
Limits of the model
Fractional help improves the quality of materials and the owner’s preparation. It does not create competition among buyers unless outreach is added. It cannot fix structural issues such as heavy reliance on the owner or a single customer in a short project, though it can show a buyer’s view of them. An attorney is still needed to draft and negotiate the contracts, and the owner’s CPA is still needed for tax and financial reporting.
Continuity is another point to check. When the fractional advisor is not the one who later runs the sale, the handoff matters: the work product should be complete enough for another advisor or the owner to use. The overview of choosing an M&A advisor places the model among the other options an owner can weigh.
The Impetus Group provides fractional investment banking support covering earnings normalization, financial projections, CIM preparation and diligence navigation.
Frequently asked questions
What is fractional investment banking?
It is part-time or project-based work by an experienced deal professional who is not a full-time employee and not the advisor running the whole sale. The work is the sell-side groundwork an investment bank would do: normalizing earnings, building projections, writing the memorandum and guiding diligence. The owner or a later advisor handles the remaining steps.
How is fractional investment banking different from a full sell-side mandate?
A full mandate runs the sale through closing, including buyer outreach and negotiation, and is usually paid in part on a completed deal. A fractional engagement covers defined workstreams for a set scope and period, and the owner or another advisor handles the rest. The difference lies in who runs the process and how risk is shared.
Who is fractional investment banking for?
Owners who want senior help on specific tasks without a full mandate: those preparing well ahead of a sale, those whose finance team lacks sale experience, those answering an inbound offer and those too early or too small for a complete process. It is a poorer fit for an owner who wants someone else to run the entire sale.
Can a fractional engagement turn into a full sell-side mandate?
It can, if the agreement says how. Ask whether fees already paid are credited, whether the work product stays with the owner, and what terms a later mandate would carry. The owner should be free to take the materials to another advisor, so settle ownership of the work product in the first agreement.
What should a fractional engagement deliver?
Named work products with a schedule: a bridge from reported to adjusted earnings with support for each adjustment, a projection model, a draft memorandum, a diligence request tracker or a presentation, depending on the scope. Ask what the owner must supply and by when, because the timeline depends on both sides.
Does fractional help include contacting buyers?
Only if the scope says so. Many fractional engagements stop before outreach, and the owner or a later advisor handles buyer contact. Without outreach, no competition among buyers tests the price. If outreach is included, ask how buyers are chosen, who contacts them and how confidentiality is protected.
Thinking about a sale or an acquisition?
The Impetus Group provides sell-side and buy-side M&A advisory, from preparation and buyer outreach to negotiation and closing. A transactional valuation is often the first step, scoped and priced separately.
Related guides
- Preparation Engagement or Full Sell-Side Mandate: Which Fits Your Situation: Compare sell-side advisory engagement types: preparation only, modular and full mandate through closing, who each fits and how to move between them.
- Sell-Side vs. Buy-Side M&A Advisory: What Each Does: Sell-side advisors represent the owner selling a company. Buy-side advisors represent the acquirer. See what each does, how they differ and when you need one.
- What Goes in a Confidential Information Memorandum (CIM): Section by Section: What is in a CIM: each section of a confidential information memorandum, from the executive summary to normalized financials, and what to hold back until later.
- Selling a Business Without a Broker or Advisor: What You Take On and What You Risk: What an owner takes on when selling without a broker or M&A advisor: the jobs involved, where going alone works, where it breaks down and how to get partial help.
- How M&A Advisors Are Paid: Retainers, Success Fees and Tail Periods: How M&A advisor fees are built: retainers, monthly and milestone fees, success fees, expenses and tail periods, plus questions that make proposals comparable.
- Questions to Ask Before Hiring an M&A Advisor: What Good Answers Sound Like: Questions to ask an M&A advisor before signing, grouped by topic, with what a good answer sounds like and what should worry an owner.
This guide is general education. It is not a valuation opinion, appraisal, investment advice, or legal or tax advice. How these guides are made.