Every figure, sourced and dated.

Every tax figure on this site, in a lesson, an article, a quiz or the game, comes from one of two places:

• A verified parameter library of federal figures for the tax year, built from IRS publications, revenue procedures, the Internal Revenue Code and the Federal Register. Each entry records its source, the page or section, and the date it was verified. Only entries marked verified can appear on the site; the build refuses anything else.
• A primary source cited next to the figure, such as an IRS page or a section of the Code, when a figure is not in the library.

Figures are never typed by hand into a page. Each one is placed by reference to its library entry, so the page shows the checked value and links to its source in the Figures on this page list.

Each lesson and article shows three things under its title:

• Tax year: the year the rules and figures apply to. A lesson about one tax year stays labelled with that year.
• Checked: the date the figures and sources were last verified.
• Review by: the date by which they will be checked again. No figure goes more than about four months without a re-check.

When the review date passes before the re-check is done, the CHECKED stamp is replaced by a red-pen Review due note. The page stays up, the note says the figures may have changed, and quizzes from that lesson leave the daily review until it is re-checked.

Worked examples, quiz scenarios and game notes use made-up people and round numbers. They are labelled as hypothetical, they are never stated as law, and they are not anyone's real return.

If a figure or a statement is wrong, I fix the page, update its checked date, and list the change below with the date. Re-checks that change something are listed too. If you spot an error, a comment on the video reaches me; please leave out personal details.

No figure about the future, no prediction of what the IRS will do in your case, and no ranking of products or firms. Half True segments say what is true, what is half true and what condition is missing; they are about claims, never about people.

Some illustrations and background music are AI-generated and then edited by hand; the AI, music and font credits page lists the tools and licences. No figure comes from an AI model: figures come only from the verified library or a cited primary source.

For Hunter to confirm before launch: a sentence on how AI tools help with research and drafting, and that you review every script, figure and source yourself.