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Web based Financial calculator: Time Value of Money

Financial Calculator vs. 2.4
Parameters
Present Value (PV)  
Future Value (FV)  
Periodic Payment (PMT)  
Number of Periods (NP)  
Interest Rate (IR)  
Options
Beginning of period payments
End of period payments
Continuous compounding
Discrete compounding
   
    Compounding:   Payments:    Keep frequency the same
  • Result
  • Help

Time Value of Money.

See Corresponding paper under the Papers link in the left sidebar.
Notice: Negative value for owed balance and money paid to the account, positive values for balances in your favor and withdrawn from the accoont.
Basic financial formulars: CF=Compound frequency, PF=payment frequency, X=1 for beginning of period payment otherwise 0, i=effective interest
Financial equation: (General) (1): (PV+PMT(1+iX)/i)((1+i)^NP-1)+PV+FV=0
by using:
(2): A=(1+i)^NP-1
(3): B=(1+iX)/i
you get:
(4): (PV+PMT*B)*A+PV+FV=0
which solved for the other variable gives:
(5): NP=log((PMT*B-FV)/(PMT*B+PV))/log(1+i)
(6): PV=-(FV+A*PMT*B)/(A+1)
(7): PMT=-(FV+PV(A+1))/(A*B)
(8): FV=-(PV+A(PV+PMT*B)).
(9): IR solved by iteration
Display Annuity   Verbose      
Email: hve@hvks.com if you have any questions.
Usage: Enter 4 out of the 5 fields and calculate the missing value.
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Note:
If you are reporting a bug:
1)Add an Email address. (in case I have questions)
2)And the calculation your are trying to do. If I can't get a detailed bug report I can't improve anything! (Please help me out here)
Corrections:
Sep-27-2016 vs 2.4

Bugs fixed.

Sep-18-2016 vs 2.3

Rewrote the iteration for interest. Now it is faster and more robust.

Sep-14-2014 vs 2.2

Fixed a reported bug in the calculation of the interest rate.

Oct-12-2011 vs 2.0

Fixed several bugs thanks to Franz Huber's input, including a bug with interest calculation and other used formulas.

Oct-9-2011 vs 1.8 Fixed a bug with begining and end of period calucaltion.
Oct-9-2011 vs 1.7 Fixed a bug in the FV formula.