Compound Interest
Articles, guides, and in-depth tips for the Compound Interest — everything you need to get the most out of it.
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The Human Brain Is Bad at Compound Interest — Exponential Growth Blindness, Loss Aversion, and the True Cost of Fund Fees
Compound Interest Plus Inflation: Why Your 7% Return Is Actually 4% and What That Means Over 30 Years
Inflation is the invisible compound interest on your cost of living — 3% annual inflation reduces £1,000's purchasing power to £744 over 10 years. Combining this with the "real return" framework (nominal return minus inflation) reveals that a 7% return in a 3% inflation environment compounds your real wealth at 4%, not 7%. Here's why cash in inflationary periods silently destroys purchasing power, the historical real returns by asset class, and how sequence of returns risk amplifies this in retirement.
Nominal vs Effective Interest Rates: Why "5% Compounded Annually" and "4.95% Compounded Daily" Aren't What They Seem
A 5.00% account compounding annually and a 4.95% account compounding daily aren't equivalent — the daily-compounding account actually pays more, once "effective annual rate" accounts for the compounding frequency. Here's the nominal-vs-effective rate formula, the continuous-compounding limit (e^r), why APR/APY terminology varies by jurisdiction, and how this same math determines the real cost of credit card debt.
Compound Interest Working Against You: Credit Card Debt, Minimum Payments, and the Real Cost of Borrowing
Compound interest works as powerfully against you in credit card debt as it works for you in savings. Here's how daily compounding works on credit cards, the mathematics of minimum payment traps, how mortgage interest front-loads early payments, and the dramatic savings from overpaying.
The Rule of 72: The Fastest Way to Estimate Compound Interest Without a Calculator
Divide 72 by the interest rate and you get the approximate years for money to double. At 8%, that's 9 years. At 6% inflation, your purchasing power halves in 12 years. The Rule of 72 is the fastest compound interest mental shortcut — here's how it works, why it's accurate, and how to extend it to tripling, quadrupling, and GDP growth.
Compound Interest Calculator — Why Starting Early Beats Starting Big
Discover how compound interest creates exponential wealth, why starting early beats starting big, how fees destroy compounding over time, and how to model any investment scenario with a free compound interest calculator.
Compound Interest Calculator — How It Works & Real Examples
Learn how compound interest works and use our free calculator to project your savings or investment growth with real numbers, worked examples, and practical tips.
