Content review policy
How our calculators and their text are written, checked and corrected, and where the limits of that process are.
Last updated October 30, 2026
What has not been reviewed by a professional
No calculator or page on this site has been reviewed or approved by a licensed financial, tax, medical or other professional. We do not name reviewers or list credentials because we have none to show. Results are estimates for general information, not financial, tax or medical advice.
How a calculator is built and checked
- Each calculator runs on a shared calculation engine, so the same math gives the same answer everywhere on the site.
- Engines have automated tests that check results against known values and edge cases before a change ships.
- Every calculator page shows its formula, worked steps and an example, so you can check a result yourself. The rules we use are written out on How we calculate.
Finance and health pages
- Tax figures come from official sources, such as IRS publications, and the date they were last checked against the source is recorded with the data. We do not copy figures from other calculator sites.
- Health calculators use published, general-purpose formulas. They do not account for individual conditions, and the pages say so.
- These pages carry a plain disclaimer and conservative wording. Treat them as a starting point and confirm important decisions with a qualified professional.
Keeping content current
We keep a written maintenance schedule: tax figures are refreshed each January, date pages are checked for the correct current date, and calculator results are spot-checked each quarter. The schedule is a plan. It is carried out by the site team, and no outside reviewer is assigned to it today.
Corrections
If you find a wrong result or an out-of-date figure, contact us. Reported errors are looked at first, and the page's "Last updated" date changes when its content changes.
If this changes
If we add professional review to any page, we will name the reviewer and the date of the review on that page and update this policy at the same time. Until then, this page describes what actually happens.