Corporations avoid taxes to make a larger profit and to increase the income of board of trustees. managers, and stockholders. As a result, not enough taxes are collected by the IRS (Internal Revenue Service). An imbalance in collecting taxes exists among corporations. This is caused by corporations slipping through the loopholes of the existing tax laws. Corporations' techniques in avoiding taxes are clever, which is a serious problem. This paper discusses the loopholes in tax laws and the ways corporations avoid taxes. Suggestions on improving the tax laws will also be discussed.