Brian Dunning's FileMaker Custom Functions

fnCALC_TAUX ( ValeurActuelle ; NombreMensualites ; Mensualite ; 0,10 )

Returns the interest rate per period of an annuity. RATE is calculated by iteration

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louis   louis

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  Sample input:
fnCALC_TAUX ( 150000; 240; 1000 ; 0.10)
  Sample output:

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Same as RATE() function in Excel with only required parameters.

Total number of payment periods in an annuity.
The payment made each period.
The payment made each period.

The fourth parameter (0.10 aka 10%) in the exemple above is just an initial rate.



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

Under construction. Email me your wish list for improvements.