CumPrinc

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CumPrinc(rate, nper, pv, start_per, end_per, type)

The cumulative principal received on an annuity (with periodic payments and constant interest rate) between «start_per» and «end_per» inclusive. A negative number represents cumulative principal paid.

Parameters:

«Rate»
The interest rate per period.
«NPer»
The total number of periods in the annuity's lifetime.
«Pv»
The present value.
If you receive a loan, this is the loan amount as a positive number.
If you give someone a loan, this is a negative number.
«Start_per»
First period included in the sum.
«End_per»
Last period included in the sum.
«Type»
(Optional) Indicates whether payments are at the beginning of the period.
True = Payments due at beginning of period, with first payment due immediately.
False = Payments due at end of period. (default)

Returns:

Index n := start_per..end_per Do Sum(PPmt(rate, n, nper, pv, 0, type), I)

Library

Financial Functions

Examples

Five years ago, you took out a 30-year fixed rate mortgage at a rate of 6.5% for an initial loan of $350K. How much equity have you paid for during the first five years?

-CumPrinc(6.5%/12, 30*12, $350K,1, 5*12) → $22,361.58

See Also

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