This study attempts to examine the effect of financial performance for mergers and acquisitions in both high-tech and non-high-tech firms in Taiwan. By using the unbalanced Panel Data of two-way fixed and random effects models, we utilized Market Value-Added (MVA) to analyze the financial performances of acquiring firms. The empirical results indicated that the total asset turnover ratio has the significant and positive signs for the financial performance of the high-tech firms. In addition, the company with the high-growth of market/book ratio will experience better financial performance. The EPS has the significant and positive effect for both high–tech and non-high-tech firms.