User`s guide

Appendix B: More About CalculationsII
Time Value of Money (TVM)
Payment Mode Factor: S = 0 for End mode; 1 for Begin mode.
Amortization
BAL is initially PV rounded to the current display setting.
PMT is initially PMT rounded to the current display setting.
For each payment amortized:
Interest Rate Conversions
i%
I/YR
P/YR
-------------
=
0 PV 1
i% S×
100
---------------+
⎝⎠
⎛⎞
+ PMT
11
i%
100
--------+
⎝⎠
⎛⎞
N–
–
i%
100
--------
--------------------------------------
⎝⎠
⎜⎟
⎜⎟
⎜⎟
⎛⎞
××
FV+ 1
i%
100
--------+
⎝⎠
⎛⎞
N–
×
=
ΣINT = accumulated interest
ΣPRN = accumulated principal
i = periodic interest rate
INT'
=
BAL × i (INT' is rounded to the current display setting;
INT’ = 0 for period 0 in Begin mode.)
INT = INT' (with sign of PMT)
PRN = PMT + INT'
BAL
new
=
BAL
old
+ PRN
ΣINT
new
=
ΣINT
old
+ INT
ΣPRN
new
=
ΣPRN
old
+ PRN
i
IYR
⁄
PYR 100×⁄
-----------------------------=
EFF% 1
NOM%
100 PYR⁄×
-----------------------------+
⎝⎠
⎛⎞
PYR⁄
1–
⎝⎠
⎛⎞
100×=