pmt Function

Description:
The periodic investment required at a fixed interest rate to reach a future value from a present value.
Returns the solution for
c
in the equation:
r=0: pv + c.n + fv = 0
r>0: pv.( 1 + r )**n + c.( 1 + r.b ).( ( 1 + r )**n - 1 )/r + fv = 0
where pv
present value
, fv
future value
, r
interest rate
, n
number of investment periods
, c
payment per period
, b=true
interest payable at the beginning of each period
, b=false
interest payable at the end of each period
.
Returns:
Number
Parameters:
Parameter
Data Type
Description
1
Number
The interest rate.
2
Whole Number
The number of investment periods.
3
Number
The present value of the investment.
4
Number
The future value of the investment.
5
Boolean
Is Interest payable at the beginning of each period?
Examples:
When using functions inside a field, remember the field brackets:
{pmt(BaseRate, InvestmentPeriods, CurrentValue, FutureValue, InterestPayable)}
Expression
Result
pmt( 0.12, 12, 0, 24133.13, false )
-1000
pmt( 0.11, 35, 0, 758328.81, true)
-2000
pmt( 0.06, 12, -1000, 3800.41, true )
-100

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