Articles
Clear, practical guides on the concepts behind our tools — and how to act on the numbers.
retirement
What Is Your FIRE Number? The 4% Rule, Explained
Learn how to calculate your FIRE number with the 4% rule, what a safe withdrawal rate really means, and how much you need to retire.
January 26, 2026 debtSnowball vs. Avalanche: Which Debt Payoff Strategy Wins?
A practical comparison of the debt snowball and debt avalanche methods — how each works, what each costs, and how to pick the right one for you.
January 19, 2026 investingCompound Interest, Explained: Why Time Beats Timing
Understand how compound interest works, why starting early matters more than starting big, and how to put it to work with a concrete example.
January 12, 2026