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Estimate only, not tax advice. Check IRS.gov or a tax professional before you pay.

Free for any blog or website. Paste this HTML where you want the calculator to appear. It runs entirely in your reader's browser; we don't collect what they type, and there are no cookies or trackers in the embed. Please keep the credit link.

<iframe src="https://tallysheet.pages.dev/embed/" title="2026 quarterly estimated tax calculator" style="width:100%;max-width:760px;border:0;min-height:1100px" loading="lazy" id="tallysheet-calc"></iframe> <p style="font-size:13px">Free <a href="https://tallysheet.pages.dev/tax-calculator/">quarterly estimated tax calculator</a> by TallySheet</p> <script>addEventListener("message",function(e){if(e.origin==="https://tallysheet.pages.dev"&&e.data&&e.data.tallyHeight)document.getElementById("tallysheet-calc").style.height=e.data.tallyHeight+"px"})</script>

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WordPress: add a "Custom HTML" block and paste the snippet. If your platform strips scripts, the iframe still works at a fixed height.

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