When a Claim Hits, Will Your Defense Costs Eat Your Limit?

Here's a number that should stop you cold: 59.6% of obstetricians and gynecologists have been sued at least once in their career, and about 53.1% of general surgeons have too (Insurance Journal). If you're a physician—or you sell insurance to one—you already know the defense costs in those suits can run into the high six figures before anyone talks settlement. So the question we get most often from clients is not "do I need liability insurance?" They know they do. The real question is: In a claims-made professional liability policy, do defense costs come out of my limit, or are they paid on top? That single structural detail determines whether a $1 million policy actually gives you $1 million of protection—or something closer to $600,000 after attorneys' fees. We take a hard position: for any professional liability or medical malpractice policy, assume defense costs erode the limit, and buy limits accordingly. Here's why that matters, and how we actually make the call.

The default rule: defense inside the limit for professional liability

Start with the contrast that trips people up. In a standard commercial general liability (CGL) policy, defense costs are typically paid in addition to the policy limit (IRMI). That means a $1 million per-occurrence CGL limit is genuinely $1 million for damages, plus whatever it costs to defend you. But in professional liability, defense costs are commonly included within the limit (IRMI). The same $1 million limit now has to cover both the lawyers and the settlement. For a professional liability claim, that's a very different financial exposure.

We see this confusion constantly when contractors or design firms compare a CGL quote to a professional liability quote and assume the limits are apples to apples. They're not. A $1 million CGL policy with defense outside the limit is a fundamentally broader promise than a $1 million professional liability policy with defense inside. If you're buying professional liability, you should mentally discount the limit by the expected defense spend. And because E&O claims can involve attorney fees averaging $3,000 to $150,000, court costs, and settlements ranging from a couple thousand to millions (The Hartford), that discount is not trivial. A $1 million limit with a $150,000 defense tab leaves $850,000 for the actual claim—before you account for the fact that defense costs often keep accruing.

Our recommendation: when you buy professional liability, run the math on defense-inside-the-limit. If the policy has a $1 million limit and you expect a $200,000 defense, you're really buying $800,000 of indemnity. For larger projects or higher-risk professions, look at limits of $2 million to $5 million or more (IRMI). The higher limits aren't vanity; they're the only way to preserve meaningful indemnity after defense costs.

Why claims-made and retroactive dates make the defense-cost math worse

The second structural feature that catches people is the claims-made trigger. General liability is usually occurrence-based, while professional liability is usually claims-made-and-reported (IRMI). Under an occurrence policy, losses that happen during the policy period are covered even if the claim is reported after the policy expires (The Hartford). Under a claims-made policy, the claim has to be made and reported during the policy period—or within an extended reporting period.

That matters for defense costs because the clock on reporting is unforgiving. Many professional liability policies include a retroactive date and an extended reporting period. The retroactive date means you are covered for incidents that happen on or after a specified date (The Hartford). The extended reporting period is generally a 30- to 60-day period, but it can be extended to a year or more for an additional cost (The Hartford). If you let the policy lapse and don't buy an extended reporting period, you may have no coverage at all for a claim that arrives three months after your expiration. And if you do have coverage, defense costs still come out of the same limit. So a late-reported claim can burn through your limit faster because the insurer may reserve heavily for defense while the claim is investigated.

We tell clients: treat the retroactive date as a hard floor, and never let a claims-made policy lapse without a tail. If you're switching carriers, negotiate the new retroactive date back to the original inception date, or buy prior-acts coverage. Otherwise you're creating a gap where a claim—and its defense costs—falls entirely on your balance sheet. Remember that E&O coverage does not cover claims from events that happened before the policy's retroactive date or claims filed after the extended reporting period (The Hartford). That's a double-edged sword: no coverage for the claim, and no coverage for the defense.

The practical example: a $1 million limit and a $200,000 defense

Let's make this concrete. Imagine a technology consultant with a $1 million professional liability policy on a claims-made basis. A client sues for $900,000, alleging that a botched system integration caused lost profits. The insurer assigns defense counsel. By the time the case is ready for mediation, defense costs have hit $200,000. Under a defense-inside-the-limit policy, the remaining limit for settlement is $800,000. The plaintiff's demand is $900,000. The insurer may be willing to pay $800,000 to settle, but the consultant has to come up with the extra $100,000—or go to trial with no remaining limit for a judgment. If the case goes to trial and the jury awards $1.2 million, the consultant is personally exposed for $400,000 plus any costs above the eroded limit.

Now compare that to a CGL policy with the same $1 million limit. If the same consultant had a covered bodily injury or property damage claim, defense costs would typically be paid in addition to the limit (IRMI). The $1 million would be available for the settlement, and the defense would be separate. That's why we often recommend that professionals carry both CGL and professional liability—The Hartford recommends carrying both for full protection because general liability covers physical risks while professional liability covers errors and omissions. But when you carry both, don't assume the limits stack. They cover different things. The professional liability limit is the one that will erode.

This is also why we push back when a client says "I'll just buy a $1 million professional liability policy and a $2 million umbrella." Commercial umbrella insurance extends the limits of certain liability policies, including general liability and commercial auto insurance (The Hartford). But umbrella coverage generally sits above underlying policies and may not drop down to cover a professional liability claim if the underlying professional liability policy has a defense-inside-the-limit provision that's already exhausted. You need to read the umbrella's schedule of underlying insurance. If professional liability isn't listed, or if the umbrella requires a specific underlying limit that your eroded policy can't meet, the umbrella may not respond. And commercial umbrella insurance doesn't extend the limits of certain policies like commercial property insurance (The Hartford), so it's not a cure-all.

What we actually do when placing coverage

Our workflow for any professional liability or medical malpractice placement starts with three questions. First, is defense inside or outside the limit? We assume inside unless the policy explicitly says otherwise, and we document it. Second, what is the retroactive date, and does it match the client's prior coverage? We try to keep it continuous. Third, what is the extended reporting period, and what does it cost to extend? If the client is retiring or closing the business, we price the tail before binding.

We also stress-test the limit. If the client's largest potential claim is $500,000 and expected defense is $150,000, a $1 million limit with defense inside gives them $850,000 of indemnity—enough. But if the potential claim is $1 million, a $1 million limit is not enough, because defense will eat into it. We'd look at $2 million or more. That's not over-insuring; it's recognizing the structural feature of claims-made professional liability.

For medical malpractice specifically, the market is hardening in ways that make this math more urgent. Medical liability insurance premiums increased nationwide for the seventh consecutive year, and the share of premiums that increased year-over-year rose sharply from 13.7% in 2018 to 39.9% in 2025 (Insurance Journal). In 2025, 36 states saw at least one medical liability premium increase, and 18 states had at least half of their reported premiums rise (Insurance Journal). Eleven states had at least one medical liability premium grow by 10% or more in 2025, with Pennsylvania, Kentucky, Florida, Illinois, and New York experiencing large increases in both 2024 and 2025 (Insurance Journal). When premiums are rising that fast, buyers are tempted to cut limits. We think that's backwards. If defense costs are inside the limit and premiums are up, the last thing you want is a thinner limit that a single defense can exhaust.

There's also a broader market signal. WTW found that the general liability and medical malpractice markets are behaving counter-cyclically to the overall insurance market, with substantial concerns related to social inflation, nuclear jury verdicts, and the expansion of litigation funding (Insurance Journal). While specialty rates declined in 2025 and during the January 1, 2026 renewals, with an approximate 45% cumulative rate increase achieved between 2017 and the 2023 market peak about half eroded over the past two years (Insurance Journal), the liability lines tied to bodily injury and malpractice are not enjoying the same relief. That means the defense-cost-erosion problem is not going away. If anything, social inflation makes it worse: settlements and case damage awards increased 27.5% on average between 2010 and 2019, according to the U.S. Chamber Institute for Legal Reform (Triple-I). A bigger award means a bigger hit to an already-eroded limit.

So here's our bottom line. When you buy professional liability or medical malpractice coverage, treat the limit as a shared bucket for both defense and indemnity. That means buying higher limits than you would for a CGL policy with the same nominal limit, keeping retroactive dates continuous, and never letting a claims-made policy lapse without a tail. If you're a broker, put the defense-inside-the-limit language in writing for the client. If you're a buyer, ask the question directly: "If I get sued, does the lawyer's bill reduce what's available to pay the claim?" The answer will tell you whether your $1 million limit is really $1 million—or something less.

Sources

• IRMI (International Risk Management Institute) - https://www.irmi.com/articles/expert-commentary/contractors-professional-liability-and-the-cgl
• The Hartford (Professional Liability) - https://www.thehartford.com/professional-liability-insurance
• The Hartford (Errors & Omissions) - https://www.thehartford.com/business-insurance/errors-omissions-insurance
• Insurance Journal (AMA medical liability research) - https://www.insurancejournal.com/news/national/2026/04/29/867519.htm
• Insurance Journal (WTW specialty market rates) - https://www.insurancejournal.com/news/international/2026/05/06/868716.htm
• Triple-I (Legal System Abuse / Social Inflation) - https://www.iii.org/article/social-inflation-hard-to-measure-important-to-understand