This report presents a financial analysis of JB Hi-Fi, focusing on the years 2016, 2017, and 2018. The analysis begins with the calculation of various financial ratios, including gross profit ratio, profit margin, expenses to sales ratio, return on ordinary shareholders ratio, current ratio, quick ratio, receivables turnover, inventory turnover, debt ratio, equity ratio, asset turnover, and return on total assets. These ratios are computed using data extracted from JB Hi-Fi's annual reports. The report then evaluates the company's profitability, financial stability, and liquidity over the three-year period, identifying trends and providing explanations for any significant changes. The analysis delves into the factors affecting JB Hi-Fi's performance, such as expense management and changes in liabilities relative to assets. Furthermore, the report addresses problems encountered when using annual reports for ratio analysis, including challenges in identifying the reasons behind changes, the exclusion of market-related factors, the limitations of quantitative analysis, and the potential for data manipulation. The conclusion summarizes the key findings and implications of the analysis.