SLInvest is used to evaluate the financial profitability and efficiency of investment projects.
A lot of financial operations imply several payments in the process of carrying out a project instead of a single payment at certain time.

For example, when buying a bond, the investor receives income in the form of yearly coupon payments, but he also gets some income when he sells this bond at its market price at the moment of selling. In order to determine how profitable this investment is, the investor has to evaluate its profitability in comparison to other possible investment projects.

SLInvest allows you to calculate main financial indicators of investment projects (NPV, NFV, IRR), which makes it possible to choose the most optimal and profitable investment.
Main indicators:
- Net Present Value (NPV) - the total sum of money discounted at the beginning of the project taking into account the specified discount rate
- Net Future Value (NFV) - the total sum of money obtained at the end of the project, while the money obtained from the project increase at the specified profitability equal to the discount rate
- Internal Rate of Return (IRR) - the discount rate that results in a net present value of zero for series of future cash flows.
The specified financial indicators are calculated both separately for each project and for the company''s entire investment activity (as the total of all projects).
Note that the program has no ''Calculate'' command because all calculation are done once you change the discount rate or an investment sum.