Editorial Team

Rebecca Aldridge, CFA

Rebecca Aldridge, CFA

Senior Editor, Financial Planning & Mortgage Mathematics

CFA charterholder B.S. Business Administration (Finance) Fixed-income research background

Biography

Rebecca Aldridge is the senior editor for financial content at Calculator Archive. She holds the Chartered Financial Analyst (CFA) charter and a B.S. in Business Administration with a concentration in finance, and worked in fixed-income research before moving full-time into financial education writing.

She owns the guides behind our finance tools: compound interest, loan amortization, inflation and purchasing power, and retirement withdrawal research. Every formula she publishes is checked against a primary source — the CFPB amortization explainer, the Federal Reserve H.15 rate release, IRS contribution limits, and the original Trinity University (1998) withdrawal study — and every figure is worked through with a numeric example before it goes live.

Editorial Focus

Articles by Rebecca Aldridge

The Mathematics of Compound InterestDiscrete vs. continuous compounding, the Rule of 72, and real returns · February 18, 2026 How Loan Amortization WorksThe annuity formula, interest-heavy early payments, and extra payments · January 28, 2026 Inflation vs. Purchasing PowerDecay math, the Fisher equation, and real rates of return · December 22, 2025 The 4% Rule & Trinity Study ExplainedSafe withdrawal math for retirement longevity · December 11, 2025

Every Calculator Archive guide is checked against the primary sources named on the page, and financial tools carry a "not professional advice" disclaimer. Corrections are welcome — write to bugs@calculatorarchive.com with the page and the figure, and we will verify it against the source formula. See our editorial standards for the full review policy.

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