Embed Our Calculators on Your Website
Add free, always-up-to-date UK financial calculators to your website in seconds. Copy the embed code and paste it into your HTML. All widgets are responsive and auto-resize to fit their content.
Salary Calculator
Take-home pay after income tax, National Insurance, and student loan deductions.
Embed code
<iframe src="https://ukcalc.co.uk/embed/salary/" width="400" height="600" frameborder="0" title="Salary Calculator - UKCalc" style="border: 1px solid #e5e7eb; border-radius: 8px;"></iframe>URL parameters
| Parameter | Description | Default |
|---|---|---|
| salary | Pre-filled annual salary in GBP | 35000 |
| region | Tax region: england or scotland | england |
Example: https://ukcalc.co.uk/embed/salary/?salary=35000
Mortgage Calculator
Monthly repayments, total interest, and loan-to-value for UK mortgages.
Embed code
<iframe src="https://ukcalc.co.uk/embed/mortgage/" width="400" height="600" frameborder="0" title="Mortgage Calculator - UKCalc" style="border: 1px solid #e5e7eb; border-radius: 8px;"></iframe>URL parameters
| Parameter | Description | Default |
|---|---|---|
| price | Property price in GBP | 300000 |
| deposit | Deposit amount in GBP | 60000 |
| rate | Interest rate (e.g. 4.5) | 4.5 |
| term | Mortgage term in years | 25 |
Example: https://ukcalc.co.uk/embed/mortgage/?price=300000
Stamp Duty Calculator
SDLT, LBTT, or LTT based on property price, region, and buyer type.
Embed code
<iframe src="https://ukcalc.co.uk/embed/stamp-duty/" width="400" height="600" frameborder="0" title="Stamp Duty Calculator - UKCalc" style="border: 1px solid #e5e7eb; border-radius: 8px;"></iframe>URL parameters
| Parameter | Description | Default |
|---|---|---|
| price | Property price in GBP | 300000 |
| region | Region: england, scotland, or wales | england |
| buyer | Buyer type: standard, first-time, or additional | standard |
Example: https://ukcalc.co.uk/embed/stamp-duty/?price=300000
How to embed
- Choose a calculator above and copy its embed code.
- Customise by adding URL parameters (e.g.
?salary=50000®ion=scotland). - Paste the iframe into any HTML page, WordPress post, Notion page, or CMS.
Auto-resize (optional)
Each widget sends a postMessage with its content height
whenever the layout changes. Add this script below your iframe to
eliminate scrollbars:
<script>
window.addEventListener("message", function(e) {
if (e.data && e.data.type === "ukcalc-resize") {
var iframes = document.querySelectorAll('iframe[src*="ukcalc.co.uk"]');
iframes.forEach(function(iframe) {
iframe.style.height = e.data.height + "px";
});
}
});
</script>Use cases
- HR departments — Help employees understand take-home pay during salary reviews.
- Recruitment agencies — Let candidates see what a role is worth after tax.
- Property websites — Show mortgage repayments and stamp duty alongside listings.
- Finance blogs — Add interactive tools to articles about tax planning, property buying, or salary negotiation.
Terms of use
All embed widgets are free to use on any website. Please keep the "Powered by UKCalc" attribution visible. Calculators are updated each April when HMRC publishes new tax rates for the upcoming tax year.