Which 5500 schedule contains service provider information?

The correct answer is indeed Schedule C, which is specifically designed to provide information about service providers that are compensated by the plan. This includes details about the fees and services provided, which allows regulators and plan sponsors to assess the total costs associated with servicing the plan and ensure compliance with fiduciary responsibilities.

Schedule C helps in increasing transparency regarding the relationships between the plan and various service providers, including the plan's recordkeeper, legal counsel, actuaries, and more. By detailing these financial transactions, it enhances the oversight capabilities for both plan administrators and the Department of Labor.

Other schedules, while providing important information, do not focus on the disclosure of service provider details. For instance, Schedule A is primarily used for reporting insurance information, Schedule R is related to retirement plan information and compliance, and Schedule H covers financial statements for larger plans. Therefore, Schedule C uniquely fulfills the requirement of detailing service provider information, making it the correct choice.