National Tax Tools is an independent educational tax platform providing free calculators and guides for U.S. taxpayers. Founded by Munib Ur Rehman and reviewed by Nausheen Shahid, every tool and guide is IRS-sourced, expert-reviewed, and updated at the start of each filing season.
Key Facts
- Founded and operated independently. No advertising, no sponsored content.
- All content written by Munib Ur Rehman, reviewed by Nausheen Shahid
- IRS publications and .gov sources used exclusively as primary citations
- Content reviewed annually and updated within 30 days of any IRS guidance change
- Tools run entirely in-browser — no data is stored or transmitted
Listed in the Library of Congress Research Guide
National Tax Tools is listed in the Library of Congress Research Guide, Personal Finance: A Resource Guide, as a free resource for tax calculators, guides, and refund tools.
Munib Ur Rehman founded National Tax Tools to provide self-employed Americans with free, IRS-sourced tax resources. His background is in U.S. tax and finance content.
He researches IRS publications, Revenue Procedures, and state Department of Revenue guidance. All calculators and guides are updated annually for each filing season.
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Nausheen Shahid is a U.S. tax professional with over 22 years of experience in tax compliance and advisory services. She reviews every article and calculator on National Tax Tools for technical accuracy.
Her review confirms that all tax rates, thresholds, formulas, and deadline information align with current IRS guidance. Content is not updated or republished until her review is complete.
Read Full Bio →Our Mission
Most free tax tools are either too simplistic to be useful or wrapped in upsell funnels designed to push you toward paid software. We built National Tax Tools for self-employed Americans: freelancers, consultants, contractors, and small business owners. Professional-grade calculators and reference guides should be free, transparently sourced, and regularly updated.
Every tool on this site runs entirely in your browser. We do not require you to create an account, provide an email address, or share any financial data with us. Calculator inputs never leave your device.
Editorial Standards
We use a strict citation hierarchy: IRS.gov and official state Department of Revenue websites are primary sources. We never cite Wikipedia, general blogs, or content without a verifiable original source. All calculator formulas are derived from current IRS publications with specific publication numbers cited on each page.
Content is reviewed annually in January–February and updated mid-year within 30 days of relevant IRS guidance changes. Reader-reported corrections are reviewed within 5 business days. Read our full Editorial Policy.