Rule of 72
Investment PlanningA simple way to estimate how long it takes for an investment to double at a given annual interest rate.
Formula
Time to Double = 72 / Interest Rate
Why it matters
Quick mental math for investment planning. Helps compare different investment options without complex calculations.
Indian example
Related terms
Learn the concept
Time Value of Money →From the research
Methodology
How The Valuation Node Approaches Research
The research method behind The Valuation Node, how assumptions are stated, how sources are chosen, and how uncertainty is disclosed in every published analysis.
ValuationWhat Three Years of a Cash Flow Statement Reveals That One Year Hides
A single year of cash flow is a snapshot. Three years is a story. Learn what the trend reveals about earnings quality, funding, and sustainability.
ValuationComparing Two Companies on ROE, and Why the Higher One Is Not Always Better
Two companies can report the same ROE for very different reasons. DuPont analysis shows why an ROE built on leverage is not the same as one built on quality.