ANN
Annuity Calculator
The regular payout a lump sum can provide for a set time, or what a stream of payments is worth today.
Result…
How it's calculated
PV = PMT × (1 − (1 + i)^−N) ÷ i (× (1 + i) for payments at the start) PMT = PV ÷ that factor; i = r ÷ n, N = n × t
An annuity is a series of equal payments. Paying out from a lump sum, the balance keeps earning interest while it is drawn down, so the total paid out is more than the sum. Valuing a stream of payments discounts each one back to today.
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