On the basis of the time value of money used in assessing the backup automatic spraying systems, the model is established for selection.

By combination of theory with practice, the application of the principle of the time value of money to the modern corporate finance is discussed in this paper.

In this paper,we have discussed the comprehension of the concepts the time value of money and the annuity that is one of the standard for distinguishing the time value of money.

Although there have been some explanations on the calculation of it in teaching materials on fiscal management, to sum up and analyze is very necessary for us on the basis of this,this paper combines the studies of fiscal management and analyses how to calculate time value of capital in order to help the beginners of fiscal management.

Based on revision of offer price s arithmetic mistake,deduction of reserve fund,capital time value and life-cycle cost and avails,a new reckoning method of bid evaluation price is put forward.

Based on the analysis of the advantages and disadvantages of dynamic policy making, this paper expounds on the core problem of dynamic policy making, the time value of capital, then it further discusses the dynamic thinking in project policy making.

Taking the concrete equipment in subsidiary company of Enterprises Development Company of SPC as example,this paper analyzed the economic life,annual cost oi equipment with dynamic eco -tech index,namely,time value of capital,aiming to provide basis for decision - making in selecting optimal renewal period of.