Embed a DueSetu calculator on your website

Put a working GST, interest, EMI or late-fee calculator inside your own page. Pick a widget, copy the snippet, paste it into your HTML. It runs entirely in the visitor's browser — nothing is sent to DueSetu, and there is no charge.

Widget

Add or strip GST at 5, 12, 18, 28 or 40 percent.

Theme

Embed code

<iframe src="https://duesetu.com/embed/gst-calculator" title="gst calculator by DueSetu"
  id="duesetu-gst-calculator" width="100%" height="520" loading="lazy"
  style="border:1px solid #e2e2e2;border-radius:8px;max-width:640px;width:100%">
</iframe>
<script>
(function(){
  window.addEventListener("message",function(e){
    if(e.origin!=="https://duesetu.com")return;
    if(e.data&&e.data.type==="duesetu:embed:height"){
      var f=document.getElementById("duesetu-gst-calculator");
      if(f)f.style.height=e.data.height+"px";
    }
  });
})();
</script>

Live preview

How it works

Each widget is a small page hosted on duesetu.com that you load in an <iframe>. The snippet also drops in a few lines of JavaScript that listen for a height message from the frame and resize it, so the calculator never shows an inner scrollbar as the result grows. If you remove that script the widget still works — it just keeps the fixed height you pasted.

Steps

Choose a widget and a theme above. Match visitor's device follows each visitor's light or dark setting; Light and Dark lock it.
Click Copy embed code.
Paste it into your page where you want the calculator to appear. Most site builders have a "Custom HTML" or "Embed" block for this.

Widget URLs

If you would rather write your own markup, these are the frame sources. Add ?theme=light or ?theme=dark to force a theme.

GST calculator — https://duesetu.com/embed/gst-calculator
Interest calculator — https://duesetu.com/embed/interest-calculator
EMI calculator — https://duesetu.com/embed/emi-calculator
Late-fee calculator — https://duesetu.com/embed/late-fee-calculator

Terms of use

Free to embed on any site, including commercial ones. Keep the "Powered by DueSetu" link in the widget — it is how people find the full tools. Do not alter the frame contents or wrap the calculator to hide its origin. The calculators are provided as-is; confirm any tax or interest figure with your accountant before you rely on it. See the full terms.