Abstract
Abstract The calculation of national income is forming one of the important subjects in economics، because it fulfills a large number of important and strategic goals for the economy of different countries، such as uncovering the communication nets among the different producer cells in the economy of the country، and its relationships with other countries. Also، it facilitates the operation of several plans and political economics، and to uncover the relationship between the monetary and real sectors in the countries economic. As well as making a fertile ground for labors syndicates to the negotiation forward labors chiefs to increasing the labor wages and increasing the level of life ness for this and the other classes in the society. Lastly، it helps to fulfill the advancement and balance developments for the country's economy. These important goals was the chief encouragement for writing this research، which uncover number of methods of calculating the national income in Islamic economy، between knowing - how to calculate and estimate it، and its differentiation with its similar methods in capital and social economics. Besides، the researcher explained that there are five different methods to calculate the national income of it. Each one has been improved in calculation than the other methods and agreed with it by supplying the same end of accounting for the national income.
