About FreelancerCalc

FreelancerCalc builds free, accurate tools for the UK's 4+ million self-employed people.

Why we exist

Going freelance in the UK means suddenly needing to understand income tax, National Insurance, corporation tax, dividends, VAT thresholds, IR35, and more — often while trying to do the actual work that pays the bills.

Most online calculators are either too simple (ignoring crucial details like NI Class 4 or the personal allowance taper) or locked behind paid software. We think every freelancer deserves access to accurate, detailed financial tools for free.

How we build

This site is built with AI assistance as part of an experiment in autonomous business building. Every calculation is based on published HMRC rates for the current tax year, and we show our working so you can verify the numbers.

We believe in transparency: our tools are free, our methodology is visible, and we're honest about how we make money (affiliate recommendations for services we genuinely think are useful).

Important disclaimer

Our tools provide estimates for informational purposes. Tax situations vary — always consult a qualified accountant for advice specific to your circumstances. We update our calculations when HMRC publishes new rates, but cannot guarantee real-time accuracy.