Rule 72
‘Rule of 72’ is a simplified way to determine how long an investment will take to double, given a fixed annual rate of interest. By dividing 72 by the annual rate of return, investors can get a rough estimate of how many years it will take for the initial investment to duplicate itself. The chart below give you a quick overview of how this works.
Invest $1,000 at:
Time | 3% | 6% | 12% |
---|---|---|---|
6 years | $ – | $ – | $ 2,000.00 |
12 years | $ – | $ 2,000.00 | $ 4,000.00 |
24 years | $ 2,000.00 | $ 4,000.00 | $ 16,000.00 |
48 years | $ 4,000.00 | $ 16,000.00 | $ 256,000.00 |
*These examples are hypothetical and for illustrative purposes only. The rates of return do not represent any actual investment and cannot be guaranteed. Any investment involves potential loss of principal.