A tail, or extended reporting period, is what keeps your past work covered under a claims-made policy after you stop paying for it. Firms usually meet the cost at a big moment: retirement, a sale, or a carrier switch. There is no clean single price, because a tail is a one-time purchase for years of past exposure, not another year of coverage. The honest way to get a number is a quote built on your policy. What follows is what moves that number and why.
Length of the tail
The largest driver is how long a reporting window you buy. A one-year tail covers claims reported in the year after the policy ends. A multi-year tail extends that window further. An unlimited tail has no cutoff at all. Each step up protects your past work for longer, so each step up costs more. This is the decision that shapes the price most, and it is worth matching to how long claims could realistically surface from the kind of work you did, rather than defaulting to the shortest or the longest option.
The underlying limit
A tail does not create new limits, it extends the reporting window on the limits you already carry. That means a higher underlying limit raises the cost, because the carrier is standing behind more coverage for the length of the tail. If your policy carries large per-claim and aggregate limits to satisfy contracts or exposure, the tail reflects that. The mechanism is straightforward: more limit held open for longer is more risk for the carrier to price.
Your risk profile
Exiting does not switch off how a carrier reads your risk. Your profession, practice area, and claims history still shape the odds that a claim surfaces during the reporting period, and the tail is priced on that chance. A firm in a higher-risk class or with a rough claims record will generally see that reflected in the tail, just as it would in an annual premium. Risk profile follows the work, not the calendar.
Why timing the decision matters
Timing is the one lever fully in your hands, and it affects both options and price. A tail is generally elected within a set window around when the policy ends, so the decision has a deadline built in. Deciding early, while the policy is still active, keeps your choices open and lets you compare a proper structure without pressure. Waiting until the window is nearly closed can narrow the options and force a rushed call. Planning a tail well before an exit or a carrier switch is the difference between a considered decision and a scramble.
What tends to keep it right-sized
The savings come from matching the tail to reality, not buying the biggest or cheapest option by reflex. Sizing the length to how long claims could realistically arise from your past work, carrying a limit that fits your true past exposure, and comparing a tail against nose coverage from a new carrier where that path exists can all shape the outcome. Sometimes moving your prior-acts coverage to a new carrier is cleaner than buying a tail, and sometimes the tail is the better protection. The right answer depends on your situation.
Questions to ask your advisor
- How long a reporting period do I actually need for my past work?
- What underlying limit is the tail extending, and does it match my real exposure?
- Is a tail or nose coverage from a new carrier the cleaner path for me?
- When does my election window open and close so I do not decide under pressure?
- How does my risk profile and claims history affect the price?
A coverage review looks at both sides: that you are not overpaying for a longer or larger tail than your past work calls for, and that you are not leaving years of past exposure uncovered to save on the wrong thing.
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