Editorial Policy: How We Verify Figures

Last reviewed November 14, 2026.

Primary sources first

For federal tax figures we rely on IRS.gov (fact sheets, Q&As, forms and instructions, revenue procedures), the Federal Register, and the U.S. Code. For wages we use the U.S. Department of Labor's state minimum wage table and the websites of state labor agencies, and for local rates, city agencies. When we can't open a primary source and rely on a secondary one, we say so on the page.

How a number gets on a page

1. We open the official document and copy the figure with its date.
2. Worked examples are computed by the same code that powers the calculators, so the numbers can't drift.
3. Each page lists its sources at the bottom and shows a "last reviewed" date.
4. If a rule is unclear or only partly verified (for example, a state law we couldn't read in full), we label it rather than guess.

Updates

Tax guidance is still being issued. We update pages when the IRS publishes new regulations, forms or inflation adjustments, and when states announce their rates.

Corrections

If you spot an error, tell us through the contact page with the page address and a link to the official source. We correct verified errors promptly.

Advertising independence

Advertisers don't influence what we write, how calculators work, or which sources we cite.

No professional advice

Our content is educational. See the disclaimer.