Corporate income taxation has a profound impact on economic behavior in the United States. This dissertation focuses on two aspects: the impact of dividend taxation on investment and the impact of corporate income tax exemption on nonprofit organizations activity. The first essay compares dividend payout ratios of C and S corporations to test the validity of the traditional and the new views on dividend taxation. Average corporate income tax rate is used as an instrumental variable. The results support the traditional view. The second essay focuses on whether the exemption of nonprofit organizations from the corporate income tax affects the competition between for-profit and nonprofit hospitals. Time series and panel data analysis show that tax subsidies to nonprofit organizations have a positive impact on nonprofit hospitals market share.

The Taxpayer Service Division contributes to the Internal Revenue Service mission of achieving the highest possible voluntary compliance with the Federal income tax law by answering questions and helping taxpayers in their return preparation efforts. These services are provided by Taxpayer Service Representatives and Taxpayer Service Specialists (TSS's). The TSS position was established in 1975 to upgrade the quality of assistance provided. TSS duties include being able to provide assistance with problems involving complex areas of the tax law. The purpose of the study was to disclose to what extent TSS's are called on to answer tax questions related to partnerships, corporations, and Subchapter S corporations and to disclose whether they have been trained and are able to answer the inquiries.