Car insurance glossary
What is policy endorsement?
A policy endorsement is a written change that adds to, removes from, or modifies the standard insurance contract.
Also called: insurance rider
Glossary date: April 6, 2026
How it works
An endorsement can change coverage, definitions, exclusions, drivers, vehicles, or other terms. It becomes part of the policy.
Example
An endorsement adds rental reimbursement coverage and states its daily and maximum limits.
Why it matters
The declarations page may not explain every change made by an endorsement.
What to check on your policy
Keep each endorsement with the policy and read how it changes the referenced form or coverage.
Related car insurance terms
Put the terms into context
Read the full guide, find a nearby GoAuto office, or start a quote with the coverage details you want to discuss.