本文選取 2016~2020 之臺灣電子業上市公司作為樣本，旨探討企業避稅與董事會特性及公司治理評鑑之間的關係，而董事會特性在本文中將分成董事會專業性及董事會獨立性分別討論。
本文採用 Panel data 模型及 2SLS 模型分析，Panel data 模型結果顯示公司治理與企業避稅之間呈現正向顯著關係，且公司治理評鑑為董事會專業性與企業避稅之間的中介變數，具完全中介效果。而董事會具碩士以上學歷及獨立董事比例越高、規模較大之公司，皆與公司治理有顯著正相關。另外，董事持股及董事股權質押之比例越高則會讓企業避稅之程度也有所提升，而獨立董事比例上升則會讓企業避稅之程度降低。
2SLS 模型則顯示使用董事會特性與董事會獨立性作為公司治理的工具變數，將與企業操作避稅程度高低有正向相關。
從研究之中我們僅能知道避稅程度多寡，但無法確切得知企業進行避稅行為是否潛藏非法手段，僅能從客觀資料得知其與法定營所稅之差距，需仰賴更多資訊才能做判斷。

This study focuses on the relationship between tax avoidance, board characteristics and corporate governance evaluation, which the board characteristics will divide into board expertise and board independence respectively. In this study, we select the sample of listed companies in the electronics industry in Taiwan from 2016 to 2020.
The Panel data model and the 2SLS model are used to analyze the relationship between corporate governance and corporate tax avoidance in this study. According to the Panel data model's empirical results, the corporate governance evaluation is a mediator between board expertise and corporate tax avoidance, with a full mediating effect. We also find that the company's assets, the percentage of master's and PhD degree, and independent directors in the board have a positive and significant relationship with corporate governance. Besides, when the directors hold or pledge more shares, the company will have high tax avoidance, but there is a negative relation between tax avoidance and the percentage of independent directors. The 2SLS model shows that the use of board characteristics and board independence as instrumental variables of corporate governance is positively related to the degree of corporate tax avoidance.

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