How We Test

Every recommendation on this site comes out of the same repeatable process. This page is the contract: what we check, in what order, and what we do when we get it wrong.

The standard scenario

Every tool review starts from the same baseline so results are comparable: early 40s, $180,000 saved, a steady savings rate, aiming to step back from full-time work around 60. When a product needs different inputs — a budgeting app, a debt payoff method — we adapt the scenario and say so in the article.

What we check, in order

First, the math: we run the same inputs through each tool and compare outputs. When four AI planners gave us retirement numbers $400,000 apart, that became the story. Second, the price on the date we checked — every article carries a “figures accurate as of” line, and we re-check top articles on a rolling basis. Third, the catch: free tools have a business model, and we name it (advisory calls, premium upsells, data). Fourth, the fit: no tool is best for everyone, so most guides end with a matcher or a decision framework instead of a single winner.

Our calculators

Every interactive tool on this site is built in-house — no third-party widgets, no tracking. They run entirely in your browser; we never see the numbers you enter.

Corrections

When we get something wrong, we fix the article and note it. Spot an error? Reply to any email or drop a comment — we read every one.

Affiliate disclosure

Some links earn us a commission at no extra cost to you. Affiliate status never changes a rating or a ranking, and several of our top recommendations earn us nothing. Full details in our disclaimer.