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Taxes · Self-Employment & Estate

Self-Employment Tax Calculator

Estimate the Social Security and Medicare (SECA) taxes you owe on self-employment income.

  • Free to use here · embed on the Business plan
  • 1 input · 5 results
  • English & Spanish

Try the Self-Employment Tax Calculator

See your self-employment tax — results update as you type.

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Estimates only — not a loan offer or financial advice.

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What this calculator does

What the Self-Employment Tax calculator works out

The Self-Employment Tax Calculator is a free, embeddable calculator from CalcFunnel. Estimate the Social Security and Medicare (SECA) taxes you owe on self-employment income.

You enter one input: net self-employment profit.

It returns self-employment tax, social security portion, medicare portion, net SE earnings and deductible half.

Built for tax preparers, CPAs and payroll firms. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Taxes category.

Results it shows

  1. 01Self-Employment Tax
  2. 02Social Security Portion
  3. 03Medicare Portion
  4. 04Net SE Earnings
  5. 05Deductible Half

The first figure — self-employment tax — is the headline result.

Inputs

The inputs it uses

Each field below comes straight from the calculator, with the same help text visitors see when they hover the info icon.

Net Self-Employment Profit
Your net profit from self-employment (business income minus expenses).

For your website

Embed this calculator on your website

Put the Self-Employment Tax Calculator on your own site with your colors, copy and lead form. Every calculation can arrive in your CRM with the numbers attached.

Works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML — paste one line into an HTML or code block. No plugin needed.

Start free How embedding works

Free plan, no card. 14-day trial on Pro & Business.

  1. Inline on any pagePaste the snippet where the calculator should appear. It fills the width of its container and resizes to fit its content.
  2. Popup buttonA button sits on your page; visitors click it and the calculator opens in a popup.
  3. Floating corner widgetPaste once — or in your site-wide footer code — to show a floating calculator bubble in the corner of every page.
  4. Open from your own link or buttonGive any existing link, button or image a class and it opens the calculator when clicked.
  5. Direct linkA full-page link to the calculator for emails, social posts, QR codes or a menu item.

FAQ

Self-Employment Tax calculator FAQs

Still stuck? Ask the team — we reply within one business day.

Q.01What does the Self-Employment Tax Calculator calculate?
Estimate the Social Security and Medicare (SECA) taxes you owe on self-employment income. It returns self-employment tax, social security portion, medicare portion, net SE earnings and deductible half.
Q.02What information do I need to use the Self-Employment Tax Calculator?
You enter one input: net self-employment profit. Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Net Self-Employment Profit” mean in the Self-Employment Tax Calculator?
Your net profit from self-employment (business income minus expenses).
Q.04Is the Self-Employment Tax Calculator free to use?
Yes — you can use it on this page for free, without an account. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Taxes category. Compare plans.
Q.05Can I embed the Self-Employment Tax Calculator on my website?
Yes. Embed it inline, as a popup button, as a floating corner widget, from your own link or button, or share a direct link. It works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML sites with one line of code — see embedding.
Q.06Is the Self-Employment Tax Calculator available in Spanish?
Yes. Labels, tooltips and result names are available in English and Spanish, and visitors can switch language in the calculator.
Q.07Can the calculator capture leads?
Yes. It can end with a lead form, a Get a Quote form, a Share panel or a button to any URL. Leads are saved with the inputs and results attached and can be forwarded to your CRM by webhook.
Q.08Are the Self-Employment Tax results financial advice?
No. Estimates only. Applies 15.3% (12.4% Social Security up to the wage base + 2.9% Medicare) to 92.35% of net profit using the 2026 Social Security wage base ($184,500); no SE tax is due if net SE earnings are under $400. It excludes the additional 0.9% Medicare surtax and any QBI deduction. Consult a tax professional.

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The Self-Employment Tax Calculator is one of 188 calculators you can brand and embed with one line of code.

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