The agreed list of buyers an adviser introduced, which the tail period applies to. Keeping it explicit and approved as the process runs is what prevents an argument about who found whom after the deal is done.
Why it matters
A tail period is only as fair as the list it is measured against. If
"any buyer" qualifies, a tail becomes an open-ended claim on the seller's own future efforts,
long after the adviser's active work has stopped. Covered parties are the fix: an agreed,
specific list of buyers the adviser can genuinely claim credit for introducing or engaging, and
the tail fee applies only to a sale involving one of them.
The reason this deserves its own attention, rather than being folded silently into the tail
clause, is that the list is the thing both sides are most likely to disagree about in hindsight.
Once a deal is close, everyone has an incentive to remember the history of who found whom in the
way that suits them.
How it works
Two habits keep the covered-parties list from becoming an argument:
Keep it current, not retrospective. A list updated as buyers are actually contacted —
ideally visible to the seller throughout, not assembled from memory after the mandate ends — is
far harder to dispute than one produced for the first time when a deal is already on the table.
Define what qualifies someone for the list. A buyer the adviser merely mentioned in passing
is a different case from one the adviser actively engaged, sent materials to, or arranged a call
with. The mandate should say which of those counts, rather than leaving "introduced" undefined.
Done well, the covered-parties list is simply a running record both sides already agree on by the
time it matters, which is what makes the tail period enforceable without a fight.
It is also worth asking who has the final say when a name is disputed. A mandate that lets the
adviser add a buyer to the list unilaterally, with no notice to the seller, invites exactly the
disagreement the list exists to prevent — the seller should expect to see it, and to object to
an addition, before it becomes binding.
Questions people ask
- What are covered parties in a sell-side mandate?
- They are the specific buyers an adviser is credited with introducing or actively engaging during a mandate, forming the list that a tail-period fee applies to after the mandate ends. A sale to a buyer not on the list generally does not trigger the tail fee, which is exactly why the list matters so much to both sides.
- Who decides which buyers count as covered parties?
- Ideally the mandate itself sets clear criteria, and the list is updated and agreed as the process runs rather than reconstructed after the fact. Leaving the definition vague invites disagreement right when a deal is closing, since both the adviser and the seller then have an incentive to remember the introduction history differently.
See also
More in Sell-side mandate
- Exclusive mandate — A mandate under which only one adviser may run the sale for its term.
- Mandate — The engagement under which an adviser is appointed to sell a company: what they will do, for how long, and how they are paid.
- 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