Guides
Tail coverage and extended reporting periods
How an extended reporting period (tail) lets you report claims after a claims-made policy ends, when you need one, how it is priced, and when to elect it.
Tail coverage is a nickname for an extended reporting period (ERP): extra time after a claims-made policy ends to report claims arising from work done while it was in force. You need one when you cancel, retire, close or sell the business, or move to a new carrier that will not honor your old retroactive date. The deadline to buy it is short, usually 30 to 60 days after the policy ends, so the decision belongs on your calendar before the policy expires.
Why a tail exists
A claims-made policy responds only to claims first made and reported while the policy (or an ERP) is in force. The act that caused the claim must also fall after the policy's retroactive date. When the policy stops, so does your protection for claims that surface later. For professionals, that gap is large. A client may discover a mistake years after the work, and a lawsuit can follow long after that. The occurrence vs claims-made policies guide covers the trigger; the tail is the repair for the cliff at the end of it.
The tail does not cover new work. It does not move the retroactive date earlier. It does not usually give you a new set of limits. It extends the window in which claims about past work can be reported to the policy that was in force when the work occurred.
The three kinds of end-of-policy protection
| Term | What it is | When you use it |
|---|---|---|
| Basic or automatic ERP | A short, built-in window, often free | Policy ends without replacement |
| Supplemental ERP (the tail you buy) | An optional endorsement extending reporting for a fixed number of years or indefinitely | Retirement, closure, sale, or no replacement coverage |
| Prior acts / nose coverage | The new carrier agrees to cover acts before its inception, back to a stated retroactive date | You are switching carriers and continuing the business |
On the ISO claims-made commercial general liability form (CG 00 02), a basic ERP is built in at no extra charge. As the form is generally described, it allows 60 days to report claims in most cases and five years for claims arising from occurrences that were reported to the insurer within that 60-day window. A supplemental ERP of unlimited duration is available only if you request it in writing within 60 days of the policy ending and pay the additional premium. Professional liability, Employment practices liability insurance (EPLI): what it covers and management liability forms are written by individual carriers and differ. Many include a short automatic period, and some automatic periods fall away if you obtain similar replacement coverage. Read the ERP section of your policy and any state amendatory endorsement, because state rules can add rights. Virginia's regulation 14VAC5-335-30, for example, requires claims-made liability policies to let the named insured buy a supplemental ERP, requires the insurer to send a written offer within 15 days after termination, and gives the insured at least 30 days from termination to buy it, with exceptions such as nonpayment of premium. Rules like that are not uniform across the country, and many states leave the window to the policy.
When you need a tail, and when you don't
You usually need one when:
- You retire or close the practice or firm. No replacement policy will cover the old work, so the old carrier's ERP is the only route.
- You sell the business or stop a service line. The buyer's policy may not cover your pre-closing acts, and the asset purchase agreement may require a tail.
- You change carriers and the new policy has a later retroactive date. Either negotiate the date back or buy the tail, but not neither. See prior acts coverage and retroactive dates.
- You move from claims-made to an occurrence form. Occurrence forms do not look back, so the old claims-made policy needs a tail for the earlier work.
- A contract demands it. Client contracts often require professional liability to be maintained, or a tail purchased, for a period such as three to five years after the services end.
You usually do not need one when you renew continuously with the same retroactive date, or when you switch carriers and the new carrier grants full prior acts back to the old retro date. Confirm that in writing; do not rely on the new policy simply "covering prior work."
How a tail is priced
Carriers usually quote the ERP as a percentage of the expiring annual premium, with the percentage rising as the period gets longer. A one-year ERP costs less than a three-year ERP, and an unlimited tail costs the most. Because the expected claims after the policy ends are the same claims the policy would have paid later, the carrier prices on profession, size, limits, claims history and how long the exposure persists. Carrier schedules differ, and you should ask for the specific schedule on your policy rather than rely on a rule of thumb. The price is a one-time premium that some carriers allow in installments. Ask whether it is treated as fully earned when the endorsement is issued, because that usually means no refund if your plans change.
One related factor is the "step" in claims-made pricing. A new claims-made policy is priced lower in its early years because it covers fewer prior acts; the rate steps up as the retroactive date recedes. So a tail on a mature policy costs more than a tail on a policy in its first year. The tail coverage cost calculator lets you plug in a quote and compare options.
Death, disability and retirement provisions
Many professional liability programs, especially in healthcare, waive the tail premium on death, permanent disability or qualifying retirement. The conditions vary: a minimum age, a minimum number of continuous years with the carrier, and a requirement that you stop practicing entirely. Part-time or locum work after retiring can jeopardize the benefit under some wordings. If you plan to retire in the next few years, ask your broker for the written terms now, because switching carriers can restart the clock.
A hypothetical walkthrough
Say a sole-practitioner architect decides to retire at the end of the policy year. Her professional liability policy is claims-made with a retroactive date in 2009. She has three choices.
- Do nothing. The policy lapses. A building owner who discovers a defect and files a claim in 2028 finds no policy in force. She pays the defense herself.
- Buy a three-year ERP. Claims first made by the end of year three are covered if the work was done before her policy ended and after 2009. A claim in year four is not.
- Buy an unlimited ERP. Costs more, and may be the only option that meets a contract or a lender requirement.
Whichever she picks, she must elect before the deadline in the policy. If the policy gives her 60 days after expiration and she waits 75, the option is gone. She also cannot use the ERP for work performed after she retires. And the aggregate limit for claims reported in the ERP is typically the same aggregate remaining on the expired policy, not a new full limit, though some endorsements reinstate it, so confirm.
Timeline to follow
- 120 to 90 days before expiration: tell your broker you are retiring, selling or changing carriers. Ask for the ERP options in writing, with durations and prices.
- 60 days before: compare the cost of a tail against a new carrier's prior acts offer. Ask the new carrier for the retroactive date in writing.
- Before expiration: report any known incident or potential claim as a circumstance on the expiring policy, under its notice provision. See notice of claim and late notice: why timing matters.
- At expiration: confirm that the endorsement is issued and paid. If you elected an ERP, keep the endorsement with your business records.
- After: keep contact details current with the insurer. Claims can arrive years later, and the policy is only useful if you report them in time. how professional liability claims unfold explains what happens next.
A company that is acquired faces a related decision on its D&O policy; see Directors and officers (D&O) insurance explained. A lawyer familiar with your professional's limitation period can tell you how long claims about your work can realistically arrive in your state, since statutes of limitation and repose for professional negligence vary widely.
Key takeaways
- A tail (extended reporting period) extends the time to report claims about past work after a claims-made policy ends; it does not cover new work or move the retroactive date.
- The election window is short, often 30 to 60 days after expiration, and missing it usually ends the option.
- Prior acts coverage from a new carrier can replace a tail when you stay in business; get the retroactive date in writing.
- Pricing is quoted as a percentage of the expiring premium and rises with the length of the period, so request the carrier's schedule early.
- Many professional liability programs waive the tail on death, disability or retirement, with conditions you should read before you need them.