Articles

Plain-language explainers.

Each article runs about five minutes to read and links to a free tool you can use to apply the idea to your own numbers.

Cash FlowPublished May 22, 20268 min read

How long until work is optional, in plain numbers

The same arithmetic that powers MMM's 'Shockingly Simple Math' — savings rate is the lever, returns are the assumption. Plain English, with the formula visible.

DebtPublished June 11, 20255 min read

What one extra payment can change

Small extras on a fixed-rate debt have outsized impact on the timeline. The math, in plain language.

PaychecksPublished June 1, 20255 min read

How to estimate take-home pay

Federal tax, FICA, state withholding — what gets pulled out of your paycheck before you see it, and how to ballpark your monthly net.