Home › CFR › Title 29 › Part 400629 CFR Part 4006 — Premium Rates§ 4006.1— Purpose and scope.§ 4006.2— Definitions.§ 4006.3— Premium rate.§ 4006.4— Determination of unfunded vested benefits.§ 4006.5— Exemptions and special rules.§ 4006.6— Definition of “participant.”§ 4006.7— Premium rate for certain terminated single-employer plans.