Defense inside the limit means defense costs come out of your limit of liability. Every dollar the insurer spends on lawyers and experts is a dollar no longer available to pay a settlement or judgment.

The industry nicknames tell you what to expect: eroding limits, wasting limits, burning limits, or defense within limits.

The same claim, the other way

A consultant carries a $1,000,000 professional liability policy, this time with defense inside the limit and a $10,000 deductible. Same lawsuit, same two years, same $300,000 in defense costs.

  • Limit at the start: $1,000,000
  • Less defense spent: $300,000
  • Left to settle with: $700,000

If the case settles for $700,000 or less, the policy absorbs it and the consultant pays the deductible. If it settles for $900,000, the carrier pays $700,000 and the consultant writes a check for $200,000 — on a policy they believed had a million dollars behind it.

Why carriers write it this way

It caps their total exposure. On a defense-inside policy, the most the carrier can pay for everything combined is the limit. That certainty is what makes the premium lower.

It is the norm on professional liability and E&O, D&O, EPLI, cyber, medical malpractice, and most surplus lines casualty forms — which is to say, on the policies where legal defense tends to be most expensive.

What to do about it

  • Buy a higher limit than the exposure suggests. If defense on a typical claim in the client's field runs $250,000, a $1,000,000 eroding limit is functionally a $750,000 limit.
  • Ask whether a defense-outside option exists. Some carriers offer it by endorsement, or offer a separate defense sublimit that sits alongside the limit.
  • Check whether the deductible applies to defense too. On many E&O forms it does, so the client is funding the first dollars of their own defense.
  • Look at the consent-to-settle and hammer clause. On an eroding policy, a client who refuses a reasonable early settlement may be spending their own limit on principle.

The disclosure that protects you

A client comparing an eroding-limit quote against a defense-outside quote is not comparing the same product, and price alone will always favor the eroding one. Say so in writing when you present it. This is one of the most common places an E&O complaint against an agent starts.

Related: Defense outside the limit · E&O reference sheet

Educational only — confirm against the actual policy form and endorsements.