The engagement under which an adviser is appointed to sell a company: what they will do, for how long, and how they are paid. Everything else on this list — retainer, success fee, tail — is a term inside it.
Why it matters
Most first-time sellers spend their attention on the buyer and sign the mandate almost in
passing — a form to get out of the way before the "real" negotiation starts. That is backwards.
The mandate is the contract that decides who is working for you, what they are obliged to do,
how long they can hold the exclusive right to represent you, and what they are owed regardless
of outcome. Every other term in this category — retainer, success fee, tail period, covered
parties — is a clause written inside this one document.
Get the mandate wrong and every later stage inherits the problem: a fee dispute that surfaces
at closing, an adviser with no incentive to keep working once interest cools, or a tail clause
that outlives the relationship and taxes a deal you found yourself. Get it right and the rest of
the process runs on rails you already agreed to, while everyone still liked each other.
How it works
A mandate is a services contract, and reads like one. The core terms worth checking before you
sign:
Scope. What the adviser is actually doing — running a process, approaching a defined buyer
list, managing diligence, negotiating terms — and what stays with you.
Exclusivity and term. Whether you have appointed one adviser only (see
exclusive mandate), and for how long. Exclusivity is normal; an
open-ended term with no easy exit is not.
Payment. Usually a retainer paid regardless of outcome, and a
success fee paid on completion. How the two interact — whether the
retainer is credited against the fee — is a negotiated point, not a given.
What happens after it ends. A tail period that extends the fee
obligation to buyers the adviser introduced, defined against a list of
covered parties.
None of this is exotic. It is the same shape as any professional services engagement, and it
rewards the same reading: know what you are agreeing to before the adviser starts spending
effort on your behalf.
On GetDeal
Some sellers work with GetDeal under a mandate, and get an Engagement view showing aggregate
progress on the work as it happens — not per-buyer detail, but a running picture of where the
engagement stands. The Playbook lays out the stages a deal moves through and which agreement is
signed at each one, which is worth reading before the mandate itself is signed, since it shows
what the adviser relationship is actually setting in motion.
Raise or sell your AI startupthe Playbook — the deal stages, what each one unlocks, and which agreement is signed when
Questions people ask
- What is a sell-side mandate in plain terms?
- It is the contract between a company and the adviser hired to sell it, setting out what work the adviser will do, how long they represent the company, and how they are paid. It is a separate agreement from anything eventually signed with a buyer, and its terms shape how the whole sale process runs.
- Is a mandate the same as an offer or a purchase agreement?
- No. A mandate is between the seller and their adviser, agreed before any buyer is found. An offer and a purchase agreement are between the seller and a buyer, agreed much later. Confusing the two is common for first-time sellers, because both use the language of a deal being made.
- Can a mandate be ended early?
- Usually only under terms the mandate itself sets out. Some allow either side to exit with notice; others lock the seller in for a fixed term regardless of how the relationship is going. Checking the exit terms before signing matters more than most sellers realize, since leaving a bad mandate is otherwise expensive.
See also
Success fee,Retainer,Exclusive mandate
More in Sell-side mandate
- Covered parties — The agreed list of buyers an adviser introduced, which the tail period applies to.
- Exclusive mandate — A mandate under which only one adviser may run the sale for its term.
- Retainer — A fee paid during the engagement regardless of whether the company sells, typically monthly.
- Success fee — The adviser’s payment on a completed sale, normally a percentage of the price.
- Tail period — A window after the mandate ends during which the adviser is still owed a fee if the company is sold to a buyer they introduced.
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Updated 2026-09-09