Embed the UK Tax Calculator - free for any site

Drop a take-home pay calculator into your blog post, product page, or careers site. No sign-up, no cookies inside the iframe, includes a one-line responsive resize listener.

Live preview

The widget below is the real thing - try it.

Copy-paste snippet

Drop this into any page. The <script> block makes the iframe auto-resize to its content.

<iframe src="https://incomeaftertax.co.uk/embed/widget/" title="UK Tax Calculator" width="100%" height="540" style="border:1px solid #e2e8f0;border-radius:8px;max-width:640px" scrolling="no"></iframe>
<script>
  window.addEventListener('message', function (e) {
    if (!e.data || e.data.type !== 'iat-embed-height') return;
    document.querySelectorAll('iframe[src*="incomeaftertax.co.uk/embed/widget"]').forEach(function (f) {
      f.style.height = e.data.height + 'px';
    });
  });
</script>

What you get

No cookiesThe widget loads GA4 in cookieless mode, so your visitors don't hit a consent banner on your site.

Responsive resizeThe iframe posts its height to the parent after every recalculation, so no scrollbars ever appear.

Pre-fill via URLAdd ?salary=40000&type=employed&region=scotland&loans=plan-2 to land visitors on a pre-calculated result.

Dofollow attributionA small "Powered by incomeaftertax.co.uk" link sits at the bottom - it's the only requirement.

Works everywhereJust an iframe, so WordPress, Ghost, Substack, Medium and plain HTML all work out-of-the-box.

HMRC rates2026/27 Scottish & rUK bands, Class 1 & Class 4 NI, personal-allowance taper, and Plan 1/2/4/5 + postgraduate student loans.

Pre-fill options

Append any of these to the iframe src URL:

Query	Values	Example
`salary`	gross annual income, integer	`salary=50000`
`type`	`employed` · `self-employed`	`type=self-employed`
`region`	`ruk` · `scotland`	`region=scotland`
`pension`	annual pension £, integer	`pension=3000`
`loans`	csv of `plan-1`, `plan-2`, `plan-4`, `plan-5`, `postgraduate`	`loans=plan-2,postgraduate`