Pie Chart of the Rule of 72 — Years to Double Your Money

About this example

The Rule of 72 estimates how long it takes for an investment to double at a given annual return: divide 72 by the rate. At 6% return, that's 12 years to double; at 12%, just 6 years. Shown as years to double at common rates.

The data

• At 2%: 36 yrs — 36 years
• At 4%: 18 yrs — 18 years
• At 6%: 12 yrs — 12 years
• At 8%: 9 yrs — 9 years
• At 12%: 6 yrs — 6 years

Source

Standard compound interest approximation.

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