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Aportaciones, tasa y tiempo

The idea

Aportación, rentabilidad y plazo determinan el resultado; su peso cambia con la edad y el saldo.

Portfolio math has three loud inputs — how much you add, what it earns, and how long it runs — and their relative power flips with age and balance size.

This atlas page keeps the focus on mechanisms you can reason about: rates, time, contributions, costs and behaviour — not stock tips or promised yields.

Principles

Misconceptions

Why it matters

Contributions vs rate vs time: keep the definition tight, the units dated, and the costs visible — then the “magic” looks like arithmetic with a long clock.

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