The basics
E&O / professional liability is written on a claims-made basis, which means the policy in force when the CLAIM is reported responds — not the policy in force when the work was done. The retroactive date is the cutoff: work performed before that date is permanently excluded.
Why it matters in 2026
Common traps. Switching carriers and inadvertently letting the new carrier set a current-date retro instead of matching your prior policy's retro creates a permanent gap. Letting coverage lapse for even a day can reset the retro date on the next policy.
How it actually works
Always maintain 'prior acts' coverage by carrying the retro date forward when switching carriers. Most preferred carriers will match a prior retro at no extra premium if you provide a current declarations page from the expiring policy.
Common pitfalls
When you stop practicing or close the business, you need 'tail coverage' (extended reporting period) to cover claims made after the policy expires for work done while it was in force. Tail premium is typically 100-200% of the last annual premium for a one-time payment.
Practical recommendations
Carriers that write competitive E&O with portable retro: Hiscox, Travelers, Hartford, CNA, Markel, and the various RPS / Tokio Marine HCC programs. For tech E&O specifically, look at Coalition, At-Bay, and Vouch.
Key takeaways
- Understand the structure before you shop.
- Compare quotes from at least three carriers.
- Document everything and revisit coverage annually.
- Pair with related coverage for full protection.
Related reading on InsureLab
Sources & further reading
Frequently asked questions
What is a retroactive date?+
The cutoff date for work covered by a claims-made E&O policy. Services performed before the retro date are permanently excluded from coverage.
How do I avoid resetting my retro date?+
When switching carriers, provide your prior declarations page and request the new carrier match the existing retro date. Avoid lapses in coverage.
What is tail coverage?+
An extended reporting period that lets you report claims after the policy ends for work done while it was in force. Typically 100-200% of last annual premium for a one-time payment.
Is nose coverage the same as tail?+
No. Nose coverage on a new policy carries forward your historical retro date, while tail extends the reporting period on an expiring policy.
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