避稅行為與資訊透明度之關聯性研究

The Association between Tax Avoidance and Information Transparency

本研究旨在探討公司避稅行為與資訊透明度間之關聯性。利用應付所得稅額推估公式計算課稅所得，再以財務所得減除課稅所得之財稅差異作為本研究之應變數，並以裁決性應計數控制管理者管理財務所得所產生的財稅差異後，觀察資訊透明度如何影響課稅所得所造成的財稅差異。本研究嘗試自證基會所公布的第九屆及第十屆資訊揭露評鑑結果，作為資訊透明度的衡量指標。實證結果顯示，在控制管理財務所得的情況下，只有正向的財稅差異與資訊透明度呈顯著負相關，顯示資訊透明度對避稅行為產生嚇阻作用。

This study aims to examine the relation between tax-avoidance and information transparency. The samples are listed firms ranked by the Information Transparency and Disclosure Ranking System (IDTRS) of the Securities and Futures Institute (SFI) from 2011 to 2012, and the ranking results of IDTRS are used as the proxy of information transparency. The result shows that, after controlling for earnings management, only the positive BTD is negatively associated with information transparency. It is consistent with our conjecture that information transparency mitigates tax avoidance behavior.