1
vote
2answers
110 views

Calculating accumulated value of an annuity with changing payments?

In a series of 40 payments the first 10 payments are 10 each, the second 10 payments are 20 each, the third 10 payments are 30 each, and the final 10 payments are 40 each. The payments are equally ...
0
votes
2answers
2k views

What is the equation for an inflation adjusted annuity held in perpetuity?

What is the equation relating an initial investment, a fixed rate of return, an inflation rate, and a perpetual payment adjusted for that inflation rate?
1
vote
1answer
409 views

How to calculate lump sum required to generate desired monthly income?

Suppose my monthly expenses are $500. I want to ask a charity foundation to finance my scientific research by one-time payment intended to cover all my monthly expenses during my lifetime. How to ...
0
votes
2answers
720 views

How much is my annuity worth? Calculating present (commuted) value of an annuity or pension?

I have a lifetime annuity which adjusts with cost of living increases in my state. Is it possible to compute the present value of this annuity? If so, how might I go about that? Perhaps I am ...