nper Function

Description:
The life required for a periodic investment at a fixed interest rate to reach a future value.
Returns the solution for
n
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
Number
The amount invested in each period
3
Number
The present value of the investment
4
Number
The future value of the investment
5
Boolean
Interest payable at the beginning of each period?
Examples:
When using functions inside a field, remember the field brackets:
{nper(BaseRate, AmountInvested, CurrentValue, FutureValue, InterestPayable)}
Expression
Result
nper( 0.12, -1000, 0, 24133.13, false )
12
nper( 0.11, -2000, 0, 758328.81, true )
35