About
Last Updated: May 19, 2026
Our Mission
SmartTaxCalcs provides free, accurate, and easy-to-use tax calculators to help U.S. taxpayers make informed decisions. We believe tax tools should be transparent: every calculator shows its formula and cites its data sources.
What We Offer
- Free calculators — federal, state, self-employment, capital gains and more, with no account required.
- Up-to-date data — figures are maintained for the current tax year and reviewed annually when the IRS and states publish new numbers.
- Educational guides — plain-English explanations to go alongside the tools.
Our Standards
We strive for accuracy, transparency, and respect for your privacy. Calculations are based on authoritative sources, and we show the calculation method and the date each tool's data was last reviewed.
Sources We Use
- IRS Revenue Procedures and publications (federal brackets, standard deduction)
- State Departments of Revenue (state income and sales tax)
- Social Security Administration (FICA / self-employment thresholds)
Important
SmartTaxCalcs provides estimates for informational and educational purposes only and does not provide tax advice. See our Disclaimer.
Contact
For feedback or questions, please use our Contact page.