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Read practical guides about compound interest, DCA investing, CAGR, FIRE planning, retirement assumptions, and calculator limitations.
CompoundX learning center
These guides explain the assumptions behind CompoundX calculators. They are educational resources, not personalized financial advice, and they are designed to help you use calculator results more carefully.
Compound Interest Basics
Learn how compounding works, why time matters, and which assumptions drive long-term growth estimates.
DCA Investing Guide
Understand dollar-cost averaging, recurring contributions, and how contribution timing affects modeled returns.
CAGR vs Total Return
Learn the difference between total growth and compound annual growth rate, and when each metric is useful.
FIRE Planning Assumptions
Understand the assumptions behind financial independence targets, spending, contributions, and withdrawal rates.
Retirement Planning Calculator Guide
Use calculators to compare retirement savings scenarios without confusing model outputs for financial advice.
Choosing Investment Return Assumptions
Learn how to choose reasonable return assumptions and avoid overfitting long-term calculator results.
Safe Withdrawal Rate Explained
Understand what withdrawal rates mean, why 4% is often discussed, and why no rate is guaranteed.
Calculator Limitations
Understand what CompoundX calculators can and cannot tell you before using estimates for planning.
Before using any estimate
Always compare more than one scenario. A calculator can make assumptions visible, but it cannot remove uncertainty from taxes, inflation, fees, market volatility, or personal cash-flow changes.