This report provides a comprehensive analysis of financial management, focusing on the various sources of finance available to companies. The report examines both internal and external sources, including short-term, medium-term, and long-term financing options. Two pharmaceutical companies, AstraZeneca Plc and GlaxoSmithKline Plc, are used as case studies to illustrate the practical application of these financing methods. The analysis covers various external sources like bank overdrafts, trade credit, medium-term bank loans, hire purchase, leasing, long-term bank loans, share capital, debentures, sales and leaseback, and venture capital. The report also explores the key factors affecting the choice of appropriate finance sources, such as cost, financial strength and stability, time period, risk profile, control, tax benefits, flexibility and ease, and cash flow ability. By considering these factors, companies can make informed decisions about their capital structure and optimize their financial performance. This report aims to provide a detailed understanding of financial management principles and their application in real-world business scenarios.