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numpy.ppmt() in Python

Last Updated : 29 Nov, 2018
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numpy.ppmt(rate, nper, pv, fv, when = ‘end’) : This financial function helps user to compute payment value as per the principal value only.
Parameters : rate : [scalar or (M, )array] Rate of interest as decimal (not per cent) per period nper : [scalar or (M, )array] total compounding periods fv : [scalar or (M, )array] Future value pv : [scalar or (M, )array] present value when : at the beginning (when = {‘begin’, 1}) or the end (when = {‘end’, 0}) of each period.Default is {‘end’, 0} Return : Payment value as per the principal value only.
Equation being solved :
fv + pv*(1+rate)**nper + pmt*(1 + rate*when)/rate*((1 + rate)**nper - 1) == 0 or when rate == 0 fv + pv + pmt * nper == 0
Code: Python3 1==
# Python program explaining 
# ppmt() function 

import numpy as np 

''' 
Question : 

monthly payment needed to pay off a $10, 000 loan
in 12 years at an annual interest rate of 10 %
'''

# rate     np         pv 
Solution = np.ppmt(0.10 / 12, 12 * 12,  10, 000) 

# Here fv = 0 ; Also Default value of fv = 0 
print("Solution : ", Solution) 
Output:
Solution :  -0.1195078262827336

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