Comparaciones
Interés vs. Interés Compuesto
Compare Interés and Interés Compuesto side by side. When to use each, key differences, and a clear verdict.
Cuándo usar Interés
Use simple interest for short-term loans, car loans, or when interest is paid only on the original principal. Predictable, easy to calculate.
Cuándo usar Interés Compuesto
Use compound interest for savings accounts, retirement accounts, long-term investments. Interest earns interest, so growth accelerates over time.
Side-by-side comparison
| Característica | Interés | Interés Compuesto |
|---|---|---|
| Interest on interest? | No | Yes (the core feature) |
| Growth pattern | Linear | Exponential |
| Best for | Auto loans, short-term debt | Retirement, long-term savings |
| Rule of 72 | Does not apply | Doubling time ≈ 72 / rate |
| At 7% for 30 years on $10k | $10k + $21k = $31k | $10k → $76k (exponential) |
El veredicto
Compound interest is the most powerful force in personal finance. Albert Einstein (apparently) called it the "eighth wonder of the world." Use it as an investor; watch out for it as a borrower.
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Read comparison →Calculadora TAE vs. Interés Compuesto
APR is what you PAY. APY is what you EARN. They are mirror images. When comparing loans, look at APR. When comparing savings accounts, look at APY.
Read comparison →ROI vs. Calculadora de CAGR (Tasa de Crecimiento Anual Compuesto)
ROI answers "was it worth it?" for a single bet. CAGR answers "how fast did it grow each year, on average?" For comparing long-term investments, CAGR is more honest.
Read comparison →Valor Presente vs. Valor Futuro
PV and FV are the same formula, run in opposite directions. Use FV to project savings. Use PV to evaluate lump-sum offers. The discount rate / growth rate is the same in both.
Read comparison →Last updated: June 15, 2026 • Reviewed by: CalcxApp editorial team