The difference between an occurrence policy and a claims-made policy is a single question: what triggers coverage — when the incident happened, or when the claim is reported? An occurrence policy covers incidents that happened during the policy year, no matter when the claim shows up — even years after the policy expired. A claims-made policy covers a claim only if it is first made against you while the policy is active, for an incident on or after its retroactive date. Occurrence is "set it and forget it." Claims-made keeps working only as long as you keep it in force — and it needs tail coverage and a protected retroactive date to be safe.
Picture an incident in 2026 that turns into a lawsuit in 2029. Whether you're covered depends entirely on the policy form you carried.
| Occurrence policy | Claims-made policy | |
|---|---|---|
| Trigger | When the incident happened | When the claim is first made |
| 2026 incident, 2029 lawsuit | Covered by the 2026 policy — even though it's long expired | Covered only if a claims-made policy is active in 2029 with a retroactive date back to 2026 |
| After you cancel | Past years stay covered forever | New claims not covered unless you bought tail coverage |
| Management burden | Low | High — retroactive date + continuous coverage + tail |
That's the whole game. With occurrence, the 2026 policy "owns" the 2026 incident permanently. With claims-made, coverage lives in the year the claim lands, which is why a lapse, a reset retroactive date, or a missing tail can wipe out protection you thought you'd already paid for.
The retroactive date is the earliest incident date a claims-made policy will cover. A claim is only covered if the incident happened on or after that date and the claim is made during the policy period. When you first buy claims-made, the retroactive date is usually today. As long as you renew continuously with the same retroactive date, every year in between stays protected. The danger is a reset: if a lapse or a new policy pushes the retroactive date forward to the present, everything before it becomes uninsured — even though you were paying the whole time.
Tail coverage lets you report claims after a claims-made policy ends, for incidents that happened while it was in force. You need it any time you cancel, non-renew, retire, sell the business, or switch carriers without prior-acts coverage picking up your retroactive date. Tail can cost a multiple of your annual premium — a real, plannable expense when leaving a claims-made policy. Without it, a claim that arrives the day after the policy lapses, for work you did while insured, may have no coverage at all.
You usually don't get to freely pick; the line of coverage tends to dictate the form:
| Coverage | Usual form |
|---|---|
| Commercial General Liability (CGL) | Usually occurrence |
| Workers' compensation | Effectively occurrence-style (covers injuries in the policy period) |
| Professional liability (E&O) | Commonly claims-made |
| Directors & Officers (D&O) | Commonly claims-made |
| Employment Practices Liability (EPLI) | Commonly claims-made |
| Cyber liability | Commonly claims-made |
This is why a contractor's general liability is usually low-maintenance — it's occurrence, so a job you finished this year stays covered even if the lawsuit comes later. And it's why professional liability and EPLI need active management: they're claims-made, so continuity and tail matter enormously. Always read the declarations page — the words "occurrence" or "claims-made" are printed right there.
When you have a genuine choice, occurrence is usually the simpler, safer buy for a small business: once a policy year closes, its incidents stay covered permanently with nothing more to do. But claims-made isn't a trap — in the professional and management-liability world it's often the only form offered, and its first-year pricing is typically lower because there's little accumulated history to insure (premium then "steps up" toward mature pricing over the next few years).
The real rule is: if you carry any claims-made coverage, manage it like it's fragile. Don't let it lapse, don't let a new policy reset your retroactive date, and budget for tail whenever you might leave it — a switch, a retirement, or a sale.
Bettr Coverage is an independent commercial insurance agency serving Georgia and the wider Southeast. Policy form is exactly the kind of detail that gets overlooked when coverage is bought on price alone — and it's the kind of thing that surfaces years later as an uncovered claim. We read the declarations on every line you carry, flag which ones are claims-made, protect your retroactive dates across renewals, and make sure tail coverage is handled when you switch, sell, or wind down. One agency reviewing the whole program together means the seam between "occurrence" and "claims-made" doesn't become the gap a claim falls through.
Bettr Coverage reviews the form on every line you carry — general liability, professional, D&O, EPLI, cyber — protects your retroactive dates, and plans your tail so a claim years from now still has a home.
Get a free coverage reviewOccurrence covers incidents that happened during the policy year, whenever the claim arrives. Claims-made covers claims reported while the policy is active, for incidents after its retroactive date.
Occurrence is simpler and safer when available — past years stay covered forever. Claims-made is common in professional and management liability and requires active management (retroactive date + tail).
An Extended Reporting Period that lets you report claims after a claims-made policy ends, for incidents that occurred while it was in force. Needed when you cancel, switch, retire, or sell.
The earliest incident date a claims-made policy covers. Keep it protected across renewals — a reset makes everything before it uninsured.
Most standard CGL is written on an occurrence basis. Professional liability, D&O, EPLI, and cyber are commonly claims-made.
Little accumulated history to insure at first; premium "steps up" toward occurrence pricing as the coverage window of past incidents grows.
For general information only. Not a quote or contract of insurance. Policy triggers, retroactive dates, extended reporting provisions, exclusions, and availability differ by policy, form, and carrier — confirm the specifics on your declarations page with a licensed agent. Coverage subject to policy terms and carrier appetite.