Time Value Of Money; Amortization - HP -18C Owner's Manual

Time Value of Money (TVM)
5
=
payment mode factor (0 for End mode; 1 for Begin mode).
i%
=
I%YR
#P/Y
a
=
PV
+
(1
+
i% x 5 ) x PMT x USPV
(i% :n)
+
FV x SPPV
(i%:n)
100
Amortization
~INT
=
accumulated interest
~PRIN
=
accumulated principal
i
=
periodic interest rate
BAL
is initially the
TVM
value of PV, rounded to the current display
setting.
PMT is initially the
TVM
value of PMT, rounded to the current display
setting.
I%YR
i
=
- ---=.:..::...:.::..::..:.-- -
#P/ Y x 100
For each payment amortized:
INT'
=
BAL x i (INT' is rounded to the current display setting;
INT'
=
0 for period 0 in Begin mode)
INT
=
INT' (with sign of PMT)
PRIN
=
PMT
+
INT'
BAL
new
=
BAL
old
+
PRIN
~
INT
new =
~
INT
old
+
INT
~
PRIN
new
=
~
PRIN
old
+
PRIN
180 B: More About HP-18C Calculations