Also known as: follow form insurance · follow-form excess · following form
An excess or upper-layer policy that adopts the same terms, conditions, and exclusions as the underlying policy it sits above.
A follow-form policy is written to mirror the terms, definitions, conditions, and exclusions of the underlying policy it sits above, so coverage in the upper layer matches the layer below. It is most common in excess liability and in D&O towers, where each excess layer follows the form of the primary policy and only differs on limit and attachment point. Following form keeps a coverage tower consistent, so a claim covered by the primary is generally covered by the excess once the underlying limit is exhausted. Founders building a large D&O or liability tower should confirm each excess layer truly follows form, because a non-following or amended excess policy can add exclusions that create gaps between layers.
Follow form insurance is an excess or upper-layer policy that adopts the same terms, conditions, and exclusions as the underlying policy beneath it, differing mainly on limit and attachment point. It keeps a coverage tower consistent so the excess layer responds the same way the primary would once the lower limit is exhausted.
In a D&O or liability tower, each excess layer sits above the last and ideally follows the form of the primary policy. If an excess layer does not truly follow form, it can add exclusions or narrower terms, creating gaps between layers. Confirming every layer follows form keeps the whole tower aligned.
Definitions are educational and may be modified by your specific policy language, endorsements, and state rules. For regulatory guidance, refer to the California Department of Insurance or the NAIC.
Last updated: July 2026.