The Compound Interest Formula
A = P(1 + r/n)ⁿᵗ
Where: A = final amount, P = initial principal balance, r = annual interest rate, n = number of times interest is compounded per year, and t = number of years.
Compound Interest Calculator
Calculate how your money grows over time with compound interest and recurring monthly contributions. View full annual portfolio schedules and total interest earned.
Compound Growth Variables
$
$
%
yrs
Ending Investment Value (10 Years)
$106,639
$70,000
Total Principal Invested
+$36,639
Total Compound Growth
Final Balance$106,639
| Year | Total Contributions | Interest Earned | Ending Portfolio Balance |
|---|---|---|---|
| Year 1 | $16,000 | +$919 | $16,919 |
| Year 2 | $22,000 | +$2,339 | $24,339 |
| Year 3 | $28,000 | +$4,294 | $32,294 |
| Year 4 | $34,000 | +$6,825 | $40,825 |
| Year 5 | $40,000 | +$9,973 | $49,973 |
| Year 6 | $46,000 | +$13,782 | $59,782 |
| Year 7 | $52,000 | +$18,299 | $70,299 |
| Year 8 | $58,000 | +$23,578 | $81,578 |
| Year 9 | $64,000 | +$29,671 | $93,671 |
| Year 10 | $70,000 | +$36,639 | $106,639 |