Retirement
Maturity value
The future value of a yearly contribution made at the start of each year, compounded annually.
The Formula
Maturity = C x ((1 + r)^n - 1) / r x (1 + r)
The future value of a yearly contribution made at the start of each year, compounded annually.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| C | Yearly contribution | currency | Amount added each year. |
| r | Annual rate | rate | Notified PPF rate as a decimal. |
| n | Years | years | Number of contribution years. |
What Each Symbol Means
Ccurrency
Yearly contribution
Amount added each year.
rrate
Annual rate
Notified PPF rate as a decimal.
nyears
Years
Number of contribution years.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate ppf maturity page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate PPF Maturity, filed under Finance. Every number the guide produces comes from substituting into this one line.