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 | Related Content If a Tree Falls Do you know what to do if a tree falls on your house, damaging your roof? What is a Homeowner's Insurance Policy? Do you know what a Homeowner's Insurance Policy is? Long-Term-Care Protection Strategies The chances of needing long-term care, its cost, and strategies for covering that cost.