00 / Tools
Tools
Quick calculators for UK founders who need a first-pass answer before deciding what needs a proper review.
Useful numbers, clearly shown.
These tools are built for orientation: they show the moving parts, the assumptions and the result without pretending to replace advice.
01 / Calculators
Choose a tool.
Start with the numbers you know. Use the result as a prompt for proper review.
Sole Trader vs Limited Company Calculator
Compare simplified 2026/27 take-home pay as a sole trader and as a limited company, then use the checklist to weigh liability, credibility and admin.
Open calculator →Corporation Tax Calculator
Estimate UK Corporation Tax after marginal relief, associated companies and short accounting periods.
Open calculator →Mortgage Calculator
Estimate monthly payments, lifetime interest and how much overpayments could save.
Open calculator →Business Mileage Log
Track business journeys, calculate the HMRC mileage claim automatically, and export a clean PDF or CSV log for your records.
Open calculator →