True Interest Rate Calculator Widget

<div>
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "WebApplication",
  "name": "True Interest Rate Calculator — Uncover Your Real Rate",
  "url": "https://calculator.finlease.app/true-interest-rate",
  "applicationCategory": "FinanceApplication",
  "operatingSystem": "All",
  "description": "Discover the true interest rate on your finance quote. See what you're really paying after fees."
}
</script>

<iframe
  id="finlease-tir-calculator"
  src="https://calculator.finlease.app/true-interest-rate/embed"
  title="True Interest Rate Calculator — Uncover Your Real Rate"
  width="100%"
  height="800"
  frameborder="0"
  allowtransparency="true"
  style="border: none; border-radius: 24px; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1); overflow: hidden; display: block; transition: height 0.3s ease-out; background: transparent;"
  scrolling="no"
></iframe>
</div>

<script>
  window.addEventListener('message', function(event) {
    if (event.data && event.data.type === 'FINLEASE_TIR_RESIZE') {
      var iframe = document.getElementById('finlease-tir-calculator');
      if (iframe) {
        iframe.style.height = event.data.height + 'px';
      }
    }
    if (event.data && event.data.type === 'FINLEASE_QUOTE_CLICK' && event.data.ctaUrl) {
      window.location.href = event.data.ctaUrl;
    }
  });

  document.addEventListener('DOMContentLoaded', function() {
    var iframe = document.getElementById('finlease-tir-calculator');
    if (iframe && iframe.src) {
      var url = new URL(iframe.src);
      url.searchParams.set('ref', window.location.href);
      var parentParams = new URLSearchParams(window.location.search);
      parentParams.forEach(function(value, key) {
        if (key.startsWith('utm_')) url.searchParams.set(key, value);
      });
      if (!url.searchParams.has('utm_source')) url.searchParams.set('utm_source', 'finlease-website');
      if (!url.searchParams.has('utm_medium')) url.searchParams.set('utm_medium', 'calculator');
      if (!url.searchParams.has('utm_campaign')) url.searchParams.set('utm_campaign', 'true-interest-rate-calculator');
      iframe.src = url.toString();
    }
  });
</script>

Only changed parameters are included in the URL — unchanged values use their defaults. Paste this anywhere on your website.