Instructions:
Type in known values, then press Calculate for
the desired unknown.
Remember
to use negative values for owed balances and
money paid to the account, positive values for
balances in your favor and money withdrawn from
the account.
Also enter the interest rate per period ,
not per year . If you are making monthly payments
and have an annual interest rate, divide the
annual rate by 12 (and see my note at the
bottom of this page). Thus, an 8% annual rate
would be entered as 8/12 or .666666... (either
form is accepted).
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