HOSTING A TOTAL OF 318 FORMULAS WITH CALCULATORS

## Annuity payment

The annuity payment formula is used to calculate the periodic payment on an annuity. An annuity is a series of periodic payments that are received at a future date. The present value portion of the formula is the initial payout, with an example being the original payout on an amortized loan

The annuity payment formula shown is for ordinary annuities. This formula assumes that the rate does not change, the payments stay the same, and that the first payment is one period away. An annuity that grows at a proportionate rate would use the growing annuity payment formula. Otherwise, an annuity that changes the payment and/or rate would need to be adjusted for each change. An annuity that has its first payment due at the beginning would use the annuity due payment formula and the deferred annuity payment formula would have a payment due at a later date

## $\frac{\mathrm{rv}}{1-\left[1+r{\right]}^{\mathrm{-n}}}$

Here ,v=present value,r=rate per period,n=number of periods.

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