This diploma work focuses on value added tax in connection with accounting. Work is divided into two parts. The first one describes the development of the value added tax from the previous sales tax till the present form in the Czechoslovakian and in the Czech Republic. The work includes the proces of development of VAT in European Union as well. The second part is focused on differences which can appear between the tax base in VAT declaration and the revenues in accounting. There are described four main parts when can be higher/lower amount of tax base than the amount of revenues in accounting: time discrepancy, chargeable event which isn't the subject of VAT but is revenue, chargeable event which is the subject of VAT but isn't revenue an...