Building and validating actuarial mortality tables in Excel is a fundamental skill for candidates preparing for the SOA Exam LTAM (Long-Term Actuarial Mathematics). It might seem daunting at first, but with a step-by-step approach, you can create robust mortality tables that not only help you grasp key actuarial concepts but also sharpen your Excel skills in a practical way. Let’s walk through the process as if I were guiding a fellow actuarial student.