Calculators that answer the money questions
Six free tools built around UK tax rules and real startup costs. Nothing to install, no account, and your numbers never leave your browser.
Plan the numbers before you spend
Startup Cost Calculator
Business Name Generator
Always check availability on Companies House and a UK domain registrar before you commit.
Pricing Calculator
Self-Assessment Estimator
Estimate only, based on 2025/26 England & NI rates. Confirm with an accountant.
Runway Calculator
Business Plan Generator
Get the most out of each tool
Startup Cost Calculator
Add every launch cost plus a contingency buffer and see the true amount of cash you need.
Business Name Generator
Generate brandable UK business names from your keywords, with .co.uk domain ideas.
Business Plan Generator
Produce a lender-ready business plan you can copy or download as a text file.
Pricing Calculator
Work out the hourly and day rate you must charge to hit your target take-home pay.
Self-Assessment Estimator
Estimate Income Tax and Class 4 National Insurance on your self-employed profit.
Runway Calculator
See how many months your savings last as revenue grows month on month.