Make calculations of a Factoring operation.From the values of a securitys value, its maturity, and the financial rate, the application calculates the value of:1) Negative goodwill, can be with simple interest or compound and monthly or daily rate;2) Factoring service value;3) ISS (Services Tax);4) PIS (Social Integration Program) / PASEP (Program for the Formation of Public Server Assets);5) Cofins (Contribution to the Financing of Social Security);6) CSLL (Social Contribution on Net Income);7) Income Tax;8) IOF (Tax on Financial Transactions), with indices for opting for the Simple, individual and corporate entity differentiated;9) CPMF (Provisional Contribution on Financial Transactions), if it is re-discounted.