The difference between claims-made vs occurrence malpractice insurance comes down to one question: what has to happen during the policy period for you to be covered? An occurrence policy covers any incident that happens while the policy is active, no matter when the claim is filed — even years after the policy ends. A claims-made policy covers you only if the incident occurs after your retroactive date and the claim is filed while the policy is still in force. That single distinction determines whether you will ever need to buy tail coverage, and it can put a five- or six-figure decision in front of you the day you resign.
This is not an academic distinction. In the AMA's 2024 Physician Practice Benchmark Survey, 28.7% of physicians reported having been sued at some point in their careers. Among surgical specialists the career rate is 46.5%, with OB-GYNs at 59.6% and general surgeons at 53.1%. Claims often surface long after the care was delivered, which is exactly the window where the two policy types behave differently.
How a Claims-Made Policy Works
A claims-made policy has two conditions that must both be true for coverage to apply. First, the incident must occur on or after the policy's retroactive date — the earliest incident date the policy will cover. Second, the claim must be reported while the policy is still in force.
The retroactive date is the anchor of the whole arrangement. Anything that happened before your retroactive date is not covered, even if the claim is filed while your policy is active. When you renew a claims-made policy year after year with the same carrier, the retroactive date stays fixed at the original inception, so your covered window keeps growing.
The problem appears when the policy ends. If you leave your job in March and a patient files suit in September over care you provided last year, your old claims-made policy does not respond. The incident fell inside the coverage window, but the claim arrived after the policy died. That gap is what tail coverage exists to fill, and it is why claims-made coverage and tail obligations are inseparable topics in any physician employment contract.
Claims-made policies are the most common type of coverage employers offer physicians who work for hospitals or health systems. If your contract says the employer "provides malpractice insurance" and says nothing else, assume claims-made until you read the policy declarations page and confirm otherwise.
Why Claims-Made Premiums Start Cheap
Claims-made premiums are priced on a maturity curve. Premiums start low in year one and increase annually over roughly five to seven years as the physician's accumulated exposure to potential claims grows. In year one, the carrier is only on the hook for claims arising from a few months of practice. By year five, it is carrying years of accumulated patient encounters.
Once a claims-made policy reaches maturity — a designation that varies by carrier, with some requiring four years of practice and others eight — the premium lands at roughly the same level as an equivalent occurrence policy. The early-year discount is real, but it is a deferral, not a savings. The deferred cost comes due as tail exposure.
How an Occurrence Policy Works
An occurrence policy covers any incident that takes place during the policy period, regardless of when the claim is submitted. If the care happened while the policy was active, the policy responds — even if the lawsuit arrives five years after you changed jobs, changed carriers, or retired.
Consider a physician insured under an occurrence policy from 2022 through 2025 who is sued in 2027 over a 2024 procedure. She is still covered, because the incident occurred during the policy period. No tail coverage is required when she leaves, switches carriers, or retires.
Two structural details matter here, and most comparison articles skip them.
First, limits. With occurrence coverage, each policy year carries its own aggregate limit. Second, the limits that apply to a future claim are the limits that were in force in the year of the incident, not today's limits. If you carried $200,000/$600,000 limits in the year the care was delivered, that is the coverage that responds — even if you carry $1 million/$3 million today. An old occurrence policy protects you forever, but only at the coverage levels you bought at the time.
The trade-offs: occurrence policies typically carry higher premiums than claims-made policies, reflecting the broader long-term coverage, and occurrence coverage is not available in every state or for every specialty. Many carriers simply do not write it, particularly for high-risk specialties.
Claims-Made vs Occurrence: Side-by-Side Comparison
| Feature | Claims-Made | Occurrence |
|---|---|---|
| What triggers coverage | Incident after retroactive date AND claim filed while policy active | Incident during policy period, claim filed anytime |
| Tail coverage needed at exit | Yes (or prior acts coverage from new carrier) | No |
| Starting premium | Lower, matures over roughly 5 to 7 years | Higher from day one |
| Mature premium | Roughly comparable to occurrence | Roughly comparable to mature claims-made |
| Limits that apply to a claim | Limits in force when the claim is made | Limits in force in the year of the incident |
| Availability | Widely available; standard for employed physicians | Not offered in all states or specialties |
| Key risk to manage | Coverage gaps at job or carrier changes | Old limits may be inadequate for future claim sizes |
| Typical exit cost | Tail premium, commonly 100% to 300% of annual premium | None |
The Tail Coverage Question Is the Real Cost of Claims-Made
When a claims-made policy ends, you have three ways to stay protected for past care.
Option 1: Buy tail coverage. Tail coverage, formally an extended reporting endorsement, extends your right to report claims under the expired policy for incidents that occurred while it was active. It is usually a one-time lump sum. Tail insurance costs approximately 200% of the expiring claims-made premium, with quoted ranges from roughly 100% to 150% for low-risk specialties up to 200% to 300% or more for high-risk specialties. For an internal medicine physician paying $15,000 a year, that is a $30,000 or larger check. For a surgeon in a high-premium state, tail can exceed $100,000. Who pays that bill should be negotiated before you sign.
Option 2: Secure prior acts (nose) coverage. When you move to a new claims-made policy with a different carrier, the new carrier may agree to issue your policy with the same retroactive date as your expiring policy. Your new insurer takes on your past exposure, and no tail purchase is needed at that transition. Two caveats: not all carriers offer it, and carrying prior acts forward defers the tail obligation rather than eliminating it — the need resurfaces whenever the chain finally breaks.
Option 3: Go bare. Not a real option. A claim filed after your policy lapses becomes personal liability for defense costs, settlement, and judgment.
Occurrence policyholders skip this entire decision tree. That is the premium they paid for all along.
Which Policy Type Should You Look For?
There is no universally correct answer, which is why the honest framing is fit, not ranking.
Claims-made tends to fit early-career physicians benefiting from low initial premiums, physicians whose employer covers the premium and — critically — the tail, and physicians in states or specialties where occurrence simply is not offered. The non-negotiable discipline is protecting your retroactive date at every transition. Coverage gaps arise when a physician's retroactive date no longer matches the original date and no tail policy bridges the gap.
Occurrence tends to fit physicians who expect to change jobs, physicians who want exit flexibility without a tail negotiation, and those who value the certainty of permanent coverage for each policy year. The discipline on this side is keeping limits adequate year by year, because the limits you buy now are the limits that will defend you later.
The premium environment makes this decision more consequential than it was a decade ago. Medical liability premiums have now increased nationwide for the seventh consecutive year, the most prolonged upward trend since the early 2000s. Rising annual premiums mechanically raise future tail costs, since tail is priced as a multiple of the final premium.
Before you sign or renew anything, pull your declarations page and your employment agreement and check them against our physician contract red flags checklist. Policy type, retroactive date, and tail responsibility are three of the most expensive lines in the entire document.
What to Verify in Your Own Policy This Week
- Policy type. Find "claims-made" or "occurrence" on the declarations page. Do not rely on what a recruiter told you.
- Retroactive date (claims-made only). Confirm it matches the date you first obtained continuous coverage, not your most recent renewal.
- Limits. Note your per-claim and aggregate limits, and compare them against what is standard for your specialty and state.
- Tail language in your contract. Identify who pays for tail at voluntary resignation, termination without cause, and termination for cause. These are often three different answers.
- Prior acts availability. If you are switching carriers, ask in writing whether the new carrier will honor your existing retroactive date.
Key Takeaways
- An occurrence policy covers incidents that happen during the policy period no matter when the claim is filed. A claims-made policy requires both the incident (after the retroactive date) and the claim to fall within the active policy period.
- Claims-made premiums start lower and mature over roughly five to seven years, but the discount is a deferral — exiting a claims-made policy triggers a tail decision commonly costing 100% to 300% of your annual premium.
- Your retroactive date is the single most important number on a claims-made policy. Losing it at a job or carrier change creates an uninsured gap in your career.
- Occurrence coverage eliminates tail decisions but costs more upfront, is not available everywhere, and only protects you at the limits you carried in the year of the incident.
- Whoever pays for tail should be written into your employment contract before you sign, not negotiated on your way out.
If you are evaluating a new contract or a renewal, run your policy type, retroactive date, and tail terms through the physician contract red flags checklist before anything gets signed.
FAQs
Neither is categorically better. Occurrence offers permanent per-year protection with no tail obligation but costs more upfront and is not offered in every state or specialty. Claims-made costs less initially and is the standard employer-provided coverage, but it requires tail or prior acts coverage at every exit. The better policy is the one whose long-term costs and transition risks fit your career plans.