Embed the rental yield calculator for free
A calculator that works out purchase costs per German federal state, gross and net rental yield and the price-to-rent ratio — as an iframe for your own page. Free, no sign-up.
- Sets no cookies and loads no tracking for your visitors — nothing to add to your privacy policy.
- Real-estate transfer tax for all 16 German states, maintained and sourced.
- Adapts to the width of your container, from 320px up.
What it looks like
Embed code
Copy both — the iframe and the line below it.
<iframe src="https://ton-invest.com/embed/en/rechner"
width="100%" height="520" loading="lazy"
title="Rental yield calculator"
style="border:1px solid #e2e8f0;border-radius:12px;max-width:520px"></iframe>
<p style="font-size:12px;margin-top:6px">
<a href="https://ton-invest.com/en/rechner">Rental yield calculator</a> — TON Invest
</p>The line under the iframe is part of the deal
The calculator is free because the credit line travels with it. It deliberately sits outside the iframe: links inside an iframe belong to the embedded document, not to your page. Please leave the line in place — it is the only thing asked in return.
Optional: auto-adjust the height
Without this script the fixed height on the iframe applies. With it, the frame follows the content.
<script>
window.addEventListener('message', function (e) {
if (e.origin !== 'https://ton-invest.com') return;
if (!e.data || e.data.type !== 'ton-invest:height') return;
var f = document.querySelector('iframe[src*="ton-invest.com/embed"]');
if (f) f.style.height = e.data.height + 'px';
});
</script>Language
Swap the code in the URL: de, en or uk.
Terms of use
Embedding is free and needs no registration, including on commercial sites. Removing the credit line, rebuilding the calculator from its source, and embedding on sites with unlawful content are not permitted. Results are non-binding calculations, not tax or investment advice.
Questions, or need a different calculator?
Write to hello@ton-invest.com — including if you need a calculation other than the one shown here.