This book is a well-structured guide to the essential principles of financial mathematics, tailored for students and professionals in finance, insurance, and actuarial science. It covers a broad range of topics, beginning with basic interest calculations and progressing to advanced concepts such as annuities, loan redemption, mortality statistics, and premium computations. Each chapter is organised to provide clear definitions, followed by theoretical explanations, worked examples, and practical exercises. Topics like simple and compound interest, present and future values, annuities (immediate, due, and deferred), loan repayment strategies, probability distributions, mortality tables, and premium calculations are discussed in detail. This helps the reader understand how mathematical tools are applied in the real world, particularly within the insurance and finance sectors. Special attention is given to the application of statistical and probability concepts in insurance, providing readers with insights into how data influences decision-making and policy pricing. The book also introduces readers to the formulation of premiums and the impact of different interest rates on financial planning. By blending academic knowledge with practical utility, the book aims to create a balance between theory and application. It is suitable for classroom teaching, self-study, and as a reference for professionals. Whether you are preparing for actuarial exams or building a career in financial services, this book serves as a solid foundation to master key mathematical concepts in a simplified, student-friendly manner.