Business Insurance

Prior Acts Coverage

Prior acts (nose) coverage sets the retroactive date on a new claims-made policy to match the old insurer's retroactive date, covering incidents from before the new policy started.

Last reviewed: May 2026 · Editorial methodology

Definition

Prior acts coverage — also called nose coverage — is a provision in a new claims-made policy that extends the retroactive date back to the original retroactive date of a prior policy, bridging the gap created when switching insurers. Without nose coverage, a business switching professional liability carriers would have the new policy's retroactive date set to the switch date, leaving prior years of work uninsured unless they also purchased tail coverage from the departing insurer. Nose coverage is typically less expensive than tail coverage from the old insurer, making it an attractive alternative — but it only works if the new insurer is willing to offer it based on underwriting review. Industries with long claim latency — medical professionals, architects, engineers, attorneys — benefit most from securing nose or tail coverage at every carrier transition. When evaluating prior acts offers, businesses should confirm the new retroactive date exactly matches the old policy's retroactive date, as even a one-day gap creates uncovered exposure. Some insurers condition prior acts coverage on a claim-free attestation covering the years to be backstated.

Where this term matters

Business Insurance →/business/professional-liability →

Tip

Glossary definitions are educational. Always check your own policy language — insurers can define common terms differently from one another. When in doubt, request a written explanation from your agent.

Related terms

Tail Coverage (Extended Reporting Period)Tail coverage — formally called an Extended Reporting Period (ERP) — is essential when a claims-made policy is canceled or not renewed, protecting against late-emerging claims.Claims-Made PolicyClaims-made policies tie coverage to when a claim is reported rather than when the incident happened, making continuous coverage and retroactive dates critically important.Retroactive DateThe retroactive date on a claims-made policy defines how far back in time covered incidents can originate — incidents before this date are excluded.Professional Liability InsuranceProfessional liability insurance, sometimes called E&O, protects consultants, attorneys, accountants, and other professionals from negligence claims tied to the services they provide.
Source: Cover Forge USA editorial team|Last verified: May 2026|Methodology
Definitions are educational and may be simplified. Always refer to your policy contract and consult a licensed agent for terms that affect coverage decisions.
CF

Cover Forge USA Editorial Team

Editorial Lead

This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.

Reviewed June 2026

Get Insurance Updates

Occasional updates on insurance rules, coverage changes and new guides — and ways to save.

  • ✓State-specific insurance rule changes
  • ✓Seasonal enrollment deadline reminders
  • ✓Expert tips to lower your premiums
  • ✓New coverage options in your state

Free forever. Unsubscribe with one click. No spam, ever.

Important Disclaimer

This site provides general educational information only and is not a substitute for professional insurance advice. All rates, data, and coverage details are estimates and may not reflect your actual premiums. Insurance availability and pricing vary by state, insurer, and individual risk factors. Always consult a licensed insurance professional in your state before making coverage decisions.

← Back to Insurance Glossary (355 terms)