Founder & editor
Keith Gilligan
Keith Gilligan founded NumberBench and oversees its calculator design, benchmark research, sourcing standards, review process, and corrections.
Editorial role
Keith writes and fact-checks selected flagship tools and maintains the standards used across the broader NumberBench editorial library. A named byline means responsibility for the page’s formulas, source selection, limitations, and update history.
Selected work
IRS Mileage RateCurrent and historical federal mileage rates.Lottery Tax CalculatorFederal and state tax treatment with explicit assumptions.Minimum Wage by StateOfficial rate sources and effective dates.Federal Tax BracketsCurrent and historical bracket references.
Corrections and accountability
If a formula, source, or explanation appears wrong, email [email protected]. Include the page and inputs you used. Corrections are reviewed against the cited primary source and the affected page is updated when a change is warranted.
Read the full methodology and review process or learn more about NumberBench.