Tail vs Nose Coverage: Who Needs Which When You Buy?

Tail coverage lets the insured company keep reporting claims after an old claims-made policy (one that pays only for claims made while it is in force) ends. Nose coverage, a close relative of prior acts coverage, lets your new policy answer for work done before you bought. In an asset deal the seller usually needs the tail and you need a new policy that reaches back. In a stock deal you can often keep the existing retroactive date (the earliest date of work the policy covers). This guide is for buyers of firms with professional liability, directors and officers (D&O), employment practices liability insurance (EPLI) or cyber policies.

The short answer

Tail is about when a claim can be reported after a policy ends. Nose coverage, a close relative of prior acts coverage, is about how far back a new policy reaches, which a retroactive date (the earliest date of work the policy covers) sets.
A tail covers only earlier acts. It does not cover anything that happens after the old policy ends.
In an asset purchase the seller usually protects its own entity with a tail, while your new policy has no history unless a carrier agrees to cover prior acts. In a stock purchase you can often ask your carrier to keep the existing retroactive date.
Cost comes from different places: a D&O tail is typically a one-time premium on the old policy (other lines vary by carrier), and prior acts coverage is an underwriting decision priced into the new policy. Terms are negotiable and carrier specific.

What is the difference between tail and nose coverage?

Both ideas only matter on claims-made policies. A claims-made policy responds to claims first made, and reported, while the policy is in force, and it usually covers only acts after its retroactive date. An occurrence policy responds to injury or damage that happens during the policy period, whenever the claim arrives, so it has no tail or nose problem, although an occurrence policy generally excludes injury or damage the insured knew about before the policy began. For the basics, see occurrence vs claims-made.

Tail coverage is an extended reporting period (ERP) on the expiring claims-made policy. It lets you report claims after the policy has ended, about acts after the policy's retroactive date and before it ended. The International Risk Management Institute (IRMI) treats tail coverage and extended reporting period as the same thing.

Nose coverage sits at the front of a new policy. IRMI describes it as applying to the period between the policy's start and an earlier retroactive date. Prior acts coverage is the related idea: a claims-made policy with no retroactive date, or an earlier one, covers claims made during the policy period that arise from events before it began. Different sources use nose and prior acts a little differently, so ask your carrier to describe the wording in plain terms.

For the library entry, see the tail coverage and extended reporting period glossary page.

Which one does the seller need, and which do you need?

Situation	Who usually needs a tail	What the buyer's new policy needs
Asset purchase into a new entity	The seller's entity, if it cancels or does not renew its claims-made policies.	A retroactive date far enough back to answer for the predecessor's work, if the carrier will agree. The buyer's entity has no history of its own, so this is an underwriting decision.
Stock purchase, target keeps its own policy	Often nobody yet, because the policy continues, unless a change in control clause turns it into run-off at closing (common on D&O). Read that clause before closing.	Keep the existing retroactive date when you renew or replace the policy.
Stock purchase, buyer replaces the target's policy	The target company (now yours), which can buy an extended reporting period on the old policy so late claims about pre-closing acts can still be reported.	A new policy that keeps the target's retroactive date, or a tail on the old one.
Seller keeps operating (partial sale)	Usually no tail, because the seller's policies continue.	Coverage for the acquired operations from closing, with the retroactive date decided carefully.

The seller's tail typically protects the seller's entity, not the buyer. If you want protection for the seller's earlier work, either the seller's tail needs to name or reach you, or your own policy must carry prior acts coverage. The purchase agreement is where that gets negotiated (see prior acts and tail coverage: who pays, and stock vs asset deal: who covers old claims).

How far back does your new policy reach (the retroactive date)?

A retroactive date removes coverage for claims that come from acts before that date, even if the claim arrives during the policy period. That makes it one of the most important lines on a claims-made declarations page after an acquisition.

If a replacement policy resets the retroactive date to its own start, claims about earlier work will not be covered by the new policy. The earlier work then needs one of two things: a tail on the old policy, or a new policy that keeps the old retroactive date, sometimes called full prior acts. In a stock purchase where the target continues, you can ask the new carrier to keep the target's existing date. In an asset purchase into a new entity there is no existing date to keep, and a carrier's willingness to cover the predecessor's earlier work is a decision it makes at quote time.

Before closing, insureds are often advised to give the expiring policy notice of known claims and circumstances that could become claims. If the notice requirements are met, a later claim from those facts can be treated as made when the notice was given. This complements a tail. It does not replace one. Keeping the old retroactive date does not make notice of known circumstances optional: a new carrier will usually ask what you already know and may exclude it, so answer the application questions carefully, because they can limit what prior acts coverage reaches.

Ask the seller and the carriers these five questions before closing, in this order:

Which claims-made policies exist, and what is each retroactive date?
Does any policy have a change in control clause, and what notice does it require?
By what date must a tail be requested after the policy ends, and does it keep the expiring limits or share them?
Has the expiring carrier been given notice of known circumstances?
Will your carrier quote the old retroactive date, and is it on the quote and the binder?

Which policies have tails, and how do they differ?

Most small business general liability is written on an occurrence form, so tail and nose mostly concern these claims-made lines:

Directors and officers (D&O). Many D&O policies have a change in control clause. After an acquisition they often convert to run-off, which covers claims about conduct before the transaction until the policy ends, but not conduct after it. Some stricter policies end coverage on the transaction date. A tail or run-off period of six years is commonly requested in deals, to line up with many statutes of limitations (see D&O for search fund boards).
Professional liability (errors and omissions). The tail or prior acts question is a key continuity issue for firms that sell advice or services. See the new owner review of professional liability.
Employment practices, cyber and fiduciary. Usually claims-made, with change in control, run-off and tail terms that differ policy by policy.

Tail terms are not universal. Professional, D&O, EPLI and cyber tails are set by each carrier's form, so read the policy or ask for the quote in writing.

What does a tail cost, and what drives the price?

No standard price exists. Insurers price a tail on their view of the risk, so ask each carrier what drives its quote. For D&O, published sources describe a tail premium as typically a multiple of the current annual premium, paid as a lump sum up front, and the tail policy is usually non-cancellable. No authoritative percentage exists, so treat blog rules of thumb with caution. Some forms require you to request or buy the tail within a set window after the policy ends, and it can be short, so put the deadline in the closing checklist.

Reported D&O tail pitfalls, such as straddle exclusions, lower limits or no pre-set price, are covered in prior acts and tail coverage: who pays.

For prior acts coverage, the cost is baked into the new policy's premium and depends on how far back the carrier agrees to go, so get it quoted. Who bears the cost is a deal term (see prior acts and tail coverage: who pays and seller indemnity vs insurance).

How does a stock deal differ from an asset deal for old claims?

A hypothetical example. A buyer purchases a small engineering consulting firm. The firm carries a claims-made professional liability policy with a retroactive date several years before closing. The buyer is considering two structures.

In a stock purchase, the firm continues. The buyer asks the carrier to keep the existing retroactive date, confirms the policy's change in control terms, and gives notice of known circumstances before closing. A claim that arrives a year later about a design completed before closing can still fall within the original retroactive date, so the policy may respond, subject to its other terms, exclusions and limits, provided it was renewed or replaced without moving the retroactive date and the claim is made in a policy period.

In an asset purchase, the buyer's new company starts a new policy. If the carrier sets the retroactive date at the start of the policy, a claim about the predecessor's work falls outside it. The seller's tail may protect the seller's entity, but not the buyer. The buyer asks the carrier to quote prior acts back to an earlier date, and the purchase agreement spells out who pays for the seller's tail and whether the seller's tail can be extended to protect the buyer. Whether any carrier will agree is an underwriting question, and the buyer's legal responsibility for the predecessor's work is a question for deal counsel.

Can Morrow check our retroactive dates?

Morrow is an independent insurance agency focused on business insurance. It is licensed in Arizona, California, Colorado, Florida, Georgia, Illinois, Louisiana, Massachusetts, Michigan, Nevada, New Jersey, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Texas and Virginia. Morrow can review the claims-made policies you inherited, check retroactive dates and change in control terms, and request quotes for prior acts coverage or for a replacement policy. A quote is not coverage until a carrier binds it. It does not decide coverage or negotiate your purchase agreement. Ask your deal attorney how the tail is allocated, and ask the carrier to confirm terms in writing. Confirm any broker's license, Morrow's included, on your state insurance department's lookup. If your deal involves a very large or specialized management liability program, or you are in a state where Morrow is not licensed, look to a broker licensed in your state with that experience.

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Frequently asked questions

Do I need tail coverage if I bought the business?

It depends on the structure and the policy. The seller's entity usually needs a tail on its claims-made policies if they end. In a stock purchase the policy may continue, so the question becomes whether to keep the retroactive date. Occurrence policies do not need a tail. Some forms limit how long you have to request a tail after the policy ends, so ask for the deadline in writing. Check each policy and ask your attorney how the deal allocates the cost.

Is nose coverage the same as prior acts coverage?

They are closely related, but sources use the words differently. Prior acts coverage means a claims-made policy covers claims made during its term that arise from events before it began. Nose coverage is a name for coverage at the front of the policy term. Ask the carrier to describe it in plain words and show the retroactive date.

Does a tail cover things that happen after closing?

No. A tail only extends the time you have to report claims about acts the old policy would have covered, meaning acts after its retroactive date and before it ended. It does not extend coverage to acts after the policy ended.

Who pays for the tail in a business sale?

It is a deal term, not a rule: the seller, the company after closing, or the buyer may pay, sometimes through the price. In stock deals the company continues, so any tail or run-off cost can fall on the company you now own unless the purchase agreement says otherwise. The agreement should say who pays and what the tail must cover. Ask your attorney.

How long should a tail last?

There is no single answer. For directors and officers insurance in deals, six years is commonly requested because it matches many statutes of limitations, and shorter options exist. Other lines depend on the carrier's form. Match the length to how long claims about the old work could arrive.

References

Just bought a business? Get your insurance reviewed.

Send Morrow the declarations pages, loss runs and key contracts you inherited. Morrow can review them against the business you bought, flag gaps and request quotes where it makes sense. Any new terms depend on carrier underwriting.

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This article is general information, not legal, tax or financial advice, and not a coverage determination. Coverage depends on the actual policy wording, carrier underwriting, your purchase agreement and your contracts. Ask your attorney and accountant about deal and legal questions.

Tail vs Nose Coverage After an Acquisition