58 pages. "Every covered plan under ERISA section 4021 must make a premium filing each year.... Electronic filing is mandatory for all plans.... This document provides information for plans paying premiums for plan years beginning in 2015, including instructions for each data element that must be reported. If you are filing for a previous year, you must follow the instructions for that year.... If you are amending a filing for a plan year that did not begin in 2015, the rules in this document do not apply. You must follow the instructions and regulations applicable for that plan year."