Amitorization schedule?
"rlockwood" wrote:
How do I set up an Amitorization schedule/chart in Excel?
For al Functions of P, A, i, r, etc..
There is a l-o-t more information that you need to give in
order to answer the question properly. For example, what
loan parameters do you have to begin with? What frequency
do you want the schedule to reflect; for example, monthly
(per payment) or annually?
Typically, we have at least the loan amount (pv), the nominal
annual interest rate (i), and the term of the loan in months
(n). We assume monthly payments, and we assume interest
s compounded monthly. In that case, the payments a
ROUNDUP(PMT(i/12, n,, -pv), 2)
A monthly amortization table might consist of the following
columns and formulas:
A = payment date (useful when compounding daily)
B = payment: ROUND(PMT(i/12, n,, -pv)
C = interest: C2 = B1*(i/12)
D = principal: D2 = B2 - C2
E = Balance; E1 = loan amount; E2 = E1 - D2
Note-1: Last payment (B360 for a 30-year loan) =
D359 + C360; i.e, the remaining balance plus interest.
This may be larger or smaller than the regular payment.
Note-2: I do not know whether or not lenders round
the formula in column C (interest).
Things get more complicated if you have the "APR", but
not the nominal interest rate, and if interest is compounded
daily. If you have the "APR", it is important to to know
whether it is the Reg Z APR or an advertised APR. They
are computed very differently. If you have the Reg Z
statement, the payment should be taken from there, not
computed as above. Morevoer, the above assumes a US
loan or similar. Other countries might do things differently.
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