Arup
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Last updated: May 2026 · Charges and offers verified against official broker pages where noted.
Compounding is the idea that returns can generate additional returns over time. Instead of earning only on your original amount, your gains can be reinvested so the base grows period after period.
Simple interest typically adds a fixed amount each period. Compound interest recalculates growth on the updated balance, so the amount added per period can increase as the balance grows.
In real markets, returns aren’t fixed—so compounding depends on the path of performance, fees, and taxes. Time helps because it gives more opportunities for reinvested gains to accumulate (if returns are positive over the periods you hold).
For long-term investors, the practical takeaway is consistency: investing regularly, keeping costs reasonable, and staying aligned with a plan that can survive volatility.
Key takeaway
Understanding power of compounding helps you read markets and broker marketing more clearly — it does not replace a financial plan or professional advice.
