Free embeds for finance publishersPut a transparent tax answer inside your article.
Each iframe is hosted by TaxMathKit, runs calculations in the reader's browser, and links back to the full formula, assumptions, and primary sources. No API key or account is required.
Paste-ready iframe sources
Choose the calculation your readers need
Keep the title attribute and attribution link when you publish. Rates, assumptions, and source notes remain visible on the hosted calculator.
income tax calculatorFederal Income Tax Calculator
Estimate federal ordinary income tax with filing status, standard deduction, and visible brackets.
<iframe src="https://taxmathkit.com/embed/income-tax-calculator" title="Federal Income Tax Calculator" width="100%" height="820" loading="lazy" style="border:0"></iframe>
1099 tax calculator1099 Tax Calculator
Separate business profit, self-employment tax, federal income tax, withholding, and quarterly reserve.
<iframe src="https://taxmathkit.com/embed/1099-tax-calculator" title="1099 Tax Calculator" width="100%" height="900" loading="lazy" style="border:0"></iframe>
self employment tax calculatorSelf-Employment Tax Calculator
Apply the 92.35% base, Social Security wage-base room, Medicare, and the deductible half.
<iframe src="https://taxmathkit.com/embed/self-employment-tax-calculator" title="Self-Employment Tax Calculator" width="100%" height="820" loading="lazy" style="border:0"></iframe>
sales tax calculatorSales Tax Calculator
Add a verified combined state and local sales-tax rate to a price and see the tax separately.
<iframe src="https://taxmathkit.com/embed/sales-tax-calculator" title="Sales Tax Calculator" width="100%" height="780" loading="lazy" style="border:0"></iframe>
Attribution that keeps tax estimates honest
Use wording such as: “Calculation powered by TaxMathKit; see the formula and source method.” The result is an educational planning estimate, not tax, legal, or financial advice.