Free, no sign-up

Embed a UK tax calculator on your site

Drop a HMRC-spec-accurate calculator into your recruitment listings, salary comparison pages, IFA landing or HR portal. One <iframe>, seven calculator modes, three themes — no JavaScript, no API keys, no contract.

See it live ↓ Get the embed code

Who's this for?

Recruitment agencies

Show candidates the take-home behind every salary on your job listings. Higher dwell time, less drop-off when negotiating offers.

Contractor platforms

Inside vs outside IR35 comparison and Limited Company / Umbrella optimisation embedded next to each contract role.

Salary comparison sites

Show net not just gross. Pension impact, Scotland vs rUK, all auto-updated from HMRC rate seeds every tax year.

IFAs & tax advisers

Drop a calculator on your homepage as a soft lead-capture. Visitors run a number, you follow up with proper advice.

HR / benefits portals

Show employees how salary sacrifice, pension % changes and bonus structuring actually affect their bank balance.

Personal finance blogs

Every "what does £X salary really mean" article needs an interactive widget readers can play with. This is that widget.

Live demo

Below is the actual embedded widget — same HTML you'd put on your site. Try entering a salary; the form posts back to the iframe, no full-page reload.

Get the embed code

Copy the snippet below into any HTML page. It's a single <iframe> — no script tags, no cross-site cookies, no API keys.

<iframe src="https://taxscope.uk/embed/paye/"
        title="UK Tax Calculator"
        loading="lazy"
        style="width:100%; height:1100px; border:0;">
</iframe>

Swap the URL for one of the other four calculators:

/embed/paye/ — PAYE employee
/embed/limited-co/ — Limited Company director
/embed/umbrella/ — Umbrella contractor
/embed/ir35/ — IR35 inside vs outside
/embed/sole-trader/ — Sole Trader / Self-Employed

URL parameters

?theme=theme-default | theme-slate | theme-graphite
?hide=poweredby — hide the «Powered by» footer (paid tier)

Prefer pointing-and-clicking? Open the embed generator →

Pick a calculator, theme and hide options; the generator renders a live preview and a copy-able snippet.

What you get

Free

£0 — no signup, no card

All seven calculators
Three colour themes (default / slate / graphite)
Unlimited embeds, any domain, any volume
API: 60 req/min anonymous (anti-abuse only)
«Powered by» backlink in widget footer
Best-effort uptime, no SLA

Copy the snippet above and ship today. The HTML is the entire product.

Custom — for businesses

Quoted per project

White-label (your brand, no «Powered by»)
Custom theme colours, optional logo slot
Higher / dedicated API rate limit
SLA with uptime + response time
On-premise install or private hosting
Integration support & custom calculation rules

Tell us your use case — we'll quote a fit. See Get in touch below.

Get in touch

Need a custom integration, white-label deal, on-premise install, SLA, or just a question about whether this fits your stack? Reach out and we'll work out what makes sense for your case.

Send us a message — or open an issue on GitHub for technical questions.

Single-maintainer product. Response is best-effort, usually within a couple of business days. The Free tier is free in the literal sense — no upselling, no contract, no email-list capture.