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With compound interest, the gains you earn are reinvested and go on to earn their own gains, so growth accelerates over time. It is the central force behind long-term investing: the earlier you start, the more time compounding has to work. The same force works against you on debt, where unpaid interest is added to the balance.
The Rule of 72 estimates doubling time: at 7%, money doubles in about 72 ÷ 7 ≈ 10 years.
Compound interest is the reason a small amount invested in your 20s beats a large amount invested in your 40s. Understanding how it works changes how you think about every financial decision.
Read article →Educational disclaimer: All content on WealthSerene.com is for educational purposes only and does not constitute investment advice. Projections and calculations are illustrative — actual results will vary based on market conditions, your specific situation, and many factors outside this tool’s scope. Always consult a qualified financial professional for advice specific to your situation. View full disclosures →