The Basic Extended Reporting Period (BERP) is the 60-day and 5-year Extended Reporting Periods (ERP) automatically provided to policyholders by the 1986 Insurance Services Administration, Inc. (ISO), commercial liability claims policy (CGL). when the claimed policy is canceled, not renewed, renewed with a laser exemption, renewed on a basis other than the application, or renewed at a later date. BERPs are also included in some professional liability claims policies. In professional liability policies, BERPs extend the reporting period by 30 to 60 days at no additional charge when the insurer cancels or does not renew the policy. In some cases, they are offered when the insured cancels or does not renew the policy.