Free tools
Calculators & tools for UK contractors
Free utilities for running a contracting business. No sign-up, no email gate, no fluff.
Calculator
CIS Deduction Calculator
Work out subcontractor deductions instantly — registered (20%), unregistered (30%), or gross payment status. Materials handled correctly.
Open the calculatorCalculator
Field Service Savings Calculator
Estimate your annual savings, payback period, and productivity gain from moving your team onto a modern field service platform. Three views, live results.
See your ROICalculator
VAT Reverse Charge Calculator
Work out whether the UK construction domestic reverse charge applies, what to put on the invoice, and which VAT return boxes the supplier and customer use.
Check a supplyCalculator
Day Rate Calculator for UK Trades
Work out the hourly and day rate your business actually needs — from your target income, real overheads, and honest billable hours. Trade presets included.
Find your rateChecker
Making Tax Digital Checker
MTD for Income Tax is live — first quarterly update due 7 August 2026. Check when quarterly digital filing applies to you and get the key dates for your diary.
Check your statusMore from the blog
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