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Annuity

Gert-Jan Vons - email

summary

Annuity calculations

instructions

A RPN script to make annuity calculations

The fields are used as follows:

sIR - set Yearly Interest Rate in %
sFV - set Future Value
sType - set to 0 if payment at beginning of the
month, set to 1 if at the end.
sPV - set Present Value
sN - set Number of months
sPMT - set Monthy Payment

PV - calculate Present Value
N - calculate the Number of months
PMT - calculate Monthly Payment

code

RPN.2.f+2 \ Annuity
[a]1xb+xcP1-xb/1xf(xb+)*xd*xe+1xb+xcP/ng1Xa;
[c]1xf(xb+)xd*xb/g1xe-r2xa+/l1xb+l/;
[d]1xb+xcP1-xb/1xf(xb+)*1xb+xcPxa*xe+nr2/g1Xd;
"Annuity";
"_sIR: set annual interest rate" #'1200'/Xb;
"_sFV: set future value" Xe;
"_sType: set 0/1 if payment at \beginning/end of month" Xf;
~
"_sPV:set present value" Xa;
"_sN: set # of monthly pay-\ments" Xc;
"_sPMT:set monthly payment" Xd;
~
"PV: calculate present value" Ca;
"N: calculate number of months" Cc;
"PMT: calculate monthly pay-\ment" Cd;

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August 03, 2001
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