Abstract: The accuracy of the income allotment algorithmic model used for evaluation of technical assets is dependent on the determination of each parameter, and this is also a problem that is easy to arouse controversies. A way for calculating the income allotment proportion in the pricing model of income separation is introduced. The different meanings of several expected revenues and their determination methods are expounded. The calculation methods for discount rates and for different technical assets and their life periods are put forward, and some problems that need to be paid attention to are also put forward. Finally, a practical example is used for analysis of the income separation.