Self-Employed Tax and NI Calculator UK for 2024 to 2025

Free Tax and NI calculator to instantly calculate how much tax you'll have to pay in advance.

Tax Calculator 2024/25

I’m a business coach, not an accountant, so I made this accurate calculator simple, easy, and jargon-free.

With 30 years of experience, I’ve helped hundreds of self-employed people succeed and enjoy running their businesses.

This UK-based self-employed tax and NI calculator is one of my many tools.

£20 notes hanging from washing line. I explain how to find a good accountant and get the best out of them.

This is 30 years of experience distilled into six emails.