Short Answer
A professional liability deductible does not always apply only when an engineer loses a lawsuit. On many A&E policies, the deductible also applies to defense costs. An engineer can defend a claim successfully, pay nothing in damages, and still owe the full deductible in legal fees. A policy that removes defense costs from the deductible is generally described as offering first dollar defense.
What is First Dollar Defense?
First dollar defense means the insurer pays defense costs starting from the first dollar spent. The insured does not pay toward those costs out of pocket first. Under this structure, the deductible only applies if there's a settlement or judgment.
Without first dollar defense, the deductible is shared between defense costs and any damages paid. The firm pays out of pocket until the deductible is used up. It does not matter whether that money goes to attorney fees, expert witnesses, or a settlement.
Damages-only deductible vs. Deductible that includes defense costs
This distinction matters most when comparing two E&O quotes side by side. Two policies can list the same $25,000 deductible and still work very differently in practice.
On a damages-only deductible, the insured pays the deductible only if there's a settlement or judgment. Legal defense is provided outside that number, similar to first dollar defense in practice.
On a deductible that includes defense costs, every dollar spent on the claim counts toward it. Attorney fees, expert reports, depositions, and court costs all draw down the same deductible that would otherwise go toward a settlement.
Why First Dollar Defense Matters for Architects and Engineers
Professional liability claims against architects and engineers are often defended and dismissed without any damages ever being paid. Reaching that outcome can still generate significant legal expense.
If the deductible includes defense costs, a firm can pay the full deductible even after being dismissed with no finding of fault. The insurance worked as intended, since the carrier covered costs above the deductible. But the firm's actual out-of-pocket exposure looks different from what the deductible number alone suggests.
Why a dismissed claim can still be expensive
Getting a claim dismissed takes real legal work. Counsel still reviews the project file, responds to the complaint, and sometimes retains expert witnesses to support the firm's position. None of that is free, even when the outcome is favorable.
For a firm evaluating its actual claims cost, the deductible structure decides whether that legal work is absorbed by the carrier or paid by the firm first.
Is First Dollar Defense available as an endorsement?
On some carrier forms, first dollar defense is built into the base policy. On others, it's available as an optional endorsement, sometimes for an added premium. Availability and cost vary by carrier, and not every carrier offers it. Ask your broker to confirm whether it's an option on the specific form being quoted.
Compare the wording instead of just the deductible amount
Two E&O quotes with identical deductible amounts can produce very different results in an actual claim. Comparing quotes on price and deductible size alone misses this difference. The relevant question isn't how large the deductible is, but what it applies to.
Example
A structural engineer carries a $25,000 deductible. A homeowner alleges a structural design defect and names the engineer in a lawsuit. The carrier appoints defense counsel, and $18,000 is spent on the engineer's defense. The engineer is ultimately dismissed and pays $0 in damages.
If the deductible applies to damages only, the engineer pays nothing, since no damages were owed. If the deductible includes defense costs, the engineer owes the full $18,000 in legal fees, even though the claim was dismissed.
What to check in your own policy
- Review the deductible section of the declarations page and the insuring agreement for language describing what the deductible applies to
- Check whether the policy defines “claim expenses” or “defense costs” as part of the deductible obligation
- Ask your broker directly whether the deductible is damages-only or includes defense costs
- Ask whether first dollar defense is available as an endorsement on this specific carrier form
- Compare this provision across every quote, not just the deductible amount and premium
Related Questions
Does my professional liability deductible include attorney fees?
It depends on the policy form. Some A&E professional liability policies apply the deductible to damages only. Others apply it to defense costs as well. Check the policy language or ask your broker.
What does first dollar defense mean?
First dollar defense means the insurer pays defense costs from the start, without those costs reducing the insured's deductible. The deductible only applies to a settlement or judgment.
Is defense outside the deductible the same as first dollar defense?
Generally yes. Both describe a structure where defense costs are paid by the carrier without drawing down the deductible, unlike a structure where defense costs and damages share one deductible.
Is first dollar defense worth paying extra for?
That depends on a firm's risk tolerance and claims history. Firms that expect frequent smaller claims, or want predictable out-of-pocket costs, may find it worth the added premium. This is a decision best made with your broker after reviewing actual policy language.
Where can I find this provision in my E&O policy?
Check the declarations page for the deductible amount. Then review the insuring agreement and definitions section for how "claim expenses" or "defense costs" are treated. If it isn't clear, ask your broker or carrier directly.
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Author:
Hardcover Editorial Team
Reviewed by:
Hardcover Insurance Team
Last reviewed:
September 25, 2026
This article is educational and does not provide legal advice or determine whether a specific claim is covered. Policy terms, exclusions, underwriting requirements, and applicable law vary. Consult your insurance professional and qualified legal counsel regarding your circumstances.