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 FileMaker Pro Custom Functions

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APV ( payment ; rate ; type ; nper ; futureval )

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  Average rating: 4.4  (35 votes)
  Discuss this Custom Function

Lee Dolereit, Sharp ABT
http://www.sharpabt.com.au

Advanced Present Value

Sample Input:
APV (709.04 ; 0.005933 ;1 ;49 ; 0 )
Sample Output:
30249.9633351023703506


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

Filemaker's PV function does not have the facility to calculate Future Value on payments made in advance. This function provides the same calcuation used in the Exel / Open Office calc PV function.

payment = repayment amount made on each term

rate = Interest rate ( use 0.10 if 10% , and divide this by 12 if the interest is calculated monthly)

type = 1 for payment made in advance , 0 for arrears

nper = terms remaining / number of payments to be made

futureval = the future value of the loan at the end of the terms.

This is a transposed formula from the master formula found on Filemaker's knowledgebase website for solving financial equations beyond the scope of Filemaker's standard financial functions.


Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

5 most recent comments | Show all 6 comments

Thanks Rob , just cleared that up.

Lee, Australia
July 26, 2011 3:39pm

I am going to disagree here: rounding is a prerogative of the user. If you want a rounded result, use the Round() function. None of the native financial functions has built-in rounding - neither in Filemaker nor in Excel. That's just good practice.

Speaking of good practice, defining variables only to rename the parameters is not.

comment, VR
July 26, 2011 7:27pm

The reason why I have renamed the variables is so that the formula becomes more "readable" , for those who wish to transpose it for another purpose.

Lee, Australia
July 26, 2011 11:17pm

Which one do you find more readable?


(((a*(b*y+1) * ((y+1)^z-1)) / y) + c)/(y+1) ^ z


(((payment*(type*rate+1) * ((rate+1)^periods-1)) / rate)+FV) / (rate+1)^periods

comment, VR
July 27, 2011 6:20am

For transposition purposes , the first one.

Lee, Australia
July 27, 2011 3:36pm

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