Compute the future value of a level periodic investment from PMT, per-period rate r and period count n using FV = PMT·[(1+r)^n − 1]/r.
输入每期定投 PMT、每期利率 r 与期数 n,求年金终值。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Ordinary annuity FV | FV = PMT*[(1+r)^n-1]/r | Time Value of Money (TVM) |
| Annuity due FV | FV_due = FV*(1+r) | TVM variant |
| Parameters | PMT, r per period, n periods | Standard notation |
Given target FV, monthly contribution and periods, reverse the required monthly rate and equivalent annualized return (IRR basis).