This report delves into the core concepts of financial decision-making, exploring the interconnectedness of accounting and finance within an organization. It begins with an introduction to the roles and functions of accounting and finance departments, emphasizing their significance in financial management and strategic planning. The report then provides a detailed analysis of the accounting and finance departments of SKANSKA PLC, a leading construction company, evaluating their roles, duties, and operational efficiency. Furthermore, it incorporates a comprehensive ratio analysis of SKANSKA PLC, utilizing key financial ratios such as return on capital employed, net profit margin, and current ratio to assess the company's financial performance over a specified period. The analysis includes the calculation and interpretation of these ratios, offering insights into the company's profitability, capital efficiency, and overall financial health. The report concludes with a summary of findings and recommendations.