What Does Professional Liability (E&O) Insurance from USI Insurance Services Cover?

For CPA firms, USI runs the AICPA Professional Liability Program through its USI Affinity division as the endorsed producer, rather than underwriting the policy itself. USI's general Business Services practice separately brokers errors and omissions/professional liability coverage for other business types. ^1,3Company-reportedAICPA program page and Business Services practice page.

USI's own page states that the AICPA Professional Liability Program is "underwritten by CNA," naming the carrier for that specific program. USI's general Business Services E&O placements do not name an insurer. ¹Company-reportedDirect quote from the AICPA program page; CNA underwrites only this named program, not USI's other professional-liability placements.

USI markets the AICPA program to sole practitioners and regional CPA firms. It has offered CPA coverage since 1967 and has been the endorsed AICPA Program provider since 1994. ¹Company-reportedProgram page description.

USI describes the policy as insuring a CPA and their practice against third-party claims that professional services caused financial harm, providing a defense and paying damages for covered claims arising from high-risk situations tied to new clients, changing business plans, or new laws and regulations. ¹Company-reportedProgram page description; actual insuring agreements, exclusions and conditions are set by the issued CNA policy form.

The AICPA program page does not publish limit, retention or premium figures; it says coverage plans allow a firm to tailor coverage to its risk profile. ¹Not publicly disclosedPage as read on 2026-09-23.

USI says firms enrolled in the program get supportive claims handling and exclusive access to risk-management resources, including engagement-letter templates, in addition to the coverage itself. ¹Company-reportedProgram page description.

USI directs CPA firms seeking a quote or renewal to contact USI Affinity, with a dedicated Affinity_APL@usi.com address for the AICPA program specifically. ¹Company-reportedContact instructions on the AICPA program page.