Know exactly where your day rate goes.

Free tools for UK freelancers and sole traders — work out your real day rate, your true take-home, and exactly what you're owed. 2026/27 figures. Nothing saved, no sign-up.

What are you trying to do today?

See what I actually take home →Drag a few sliders and watch how much of your headline rate survives tax, NI, expenses and unbilled time.Work out what to charge →Find the day rate you need to hit a target take-home, accounting for tax and time off.Check my tax bill →See your Income Tax, Class 4/2 NI, and take-home pay for the year.Chase an overdue invoice →Calculate the statutory interest and compensation you're owed.

All tools

Take-Home Visualiser

See exactly how much of your day rate survives tax, NI, expenses and unpaid days.

Day Rate Calculator

Work out the day rate you need to charge to hit your target income.

Self-Employed Tax Calculator

See your Income Tax, Class 4/2 NI, and take-home pay.

Late Payment Interest Calculator

Calculate statutory interest and compensation owed on overdue invoices.

Invoice Generator

Create an HMRC-compliant invoice in your browser. No sign-up.

VAT Threshold Calculator

Check whether you need to register for VAT, based on your turnover.

MTD Readiness Checker

See when Making Tax Digital for Income Tax applies to you.

Rates & Thresholds

Every current tax, NI, VAT, and legal figure in one place.

What Expenses Can I Claim?

A plain-English guide to allowable business expenses for sole traders.