The Senior AR/Collections Analyst is responsible for preparing accounts receivable estimates, supporting the collection efforts for the employee benefits business, and assisting with month-end close tasks. This role involves reviewing commission history to reconcile payment and billing dates, identifying and troubleshooting potential billing challenges, auditing books of business under management, documenting payment cycles, handling inquiries from various stakeholders, running administrative reports, and performing ad hoc reporting and special projects as assigned by management.