What is a Carrier? Carrier[kar-ee-er]noun1.The Carrier is the insurance company that provides a specific Policy and is the company that a policyholder will pay Premiums to. The Carrier is ultimately responsible to pay out Claims. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents If a Tree Falls This handy video helps you stay prepared in case a fallen tree has damaged your house. The Anatomy of a Supplemental Health Plan Here’s a guide to explain all the parts of Medicare. Long-Term-Care Protection Strategies The chances of needing long-term care, its cost, and strategies for covering that cost.