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 Combine Your Policies and Save Some things just make perfect sense in pairs. What is a Claim? Do you know what a Claim is? Long-Term-Care Protection Strategies The chances of needing long-term care, its cost, and strategies for covering that cost.