This report provides a comprehensive analysis of financial decision-making, focusing on SKANSKA PLC. It begins with an introduction to the company and its operations, followed by an in-depth exploration of management accounting techniques, including financial planning, financial statement analysis, cost accounting, cash flow analysis, decision-making processes, budgetary control, and marginal costing. A critical analysis of these techniques is also presented, evaluating their impact on planning, controlling, and decision-making within the company, along with their limitations. The second part of the report delves into the calculation and interpretation of various financial ratios, such as Return on Capital Employed (ROCE), net profit margin, current ratio, debtor collection period, and creditor collection period, for the years 2018 and 2019. The analysis compares these ratios to assess SKANSKA PLC's financial performance, offering insights into its efficiency, profitability, and potential areas for improvement, with recommendations based on the findings.