Free for individuals.
Powerful for businesses.
calculatetax.uk is free for everyone. API access and white-label solutions are available for developers and accounting firms.
Free
Forever free. No card required.
- ✓ Full tax calculator for any salary
- ✓ All 45,000+ calculation pages
- ✓ England, Scotland, Wales & NI rates
- ✓ Weekly newsletter
Pro
Join the waitlist for early access.
- ✓ Everything in Free
- ✓ Ad-free experience
- ✓ Save & compare multiple salaries
- ✓ PDF tax summary download
- ✓ Salary negotiation mode
- ✓ Priority support
API
For developers and businesses.
- ✓ REST API access (2025-26 rates)
- ✓ All regions + all deduction types
- ✓ CORS enabled, JSON responses
- ✓ SLA + documentation
- ✓ Up to 10,000 requests/month
Frequently asked questions
Is the free version really free?
Yes, always. The calculator, all 45,000+ pages, and the newsletter are free with no time limit and no card required. That will never change.
When will Pro launch?
We are targeting Q3 2026. Join the waitlist to get early access and a founding member discount.
Can I use the API for commercial projects?
Yes. All API plans include commercial use rights. You can integrate the tax engine into any product or service you build, subject to the plan request limits.
What is the difference between API and white-label?
The API is for developers who want to embed calculations programmatically — you call our endpoint and display the result in your own UI. White-label is for accounting firms who want a fully hosted, branded calculator on their own domain, with no code required. See the white-label option.