FREE CONTRACTOR CALCULATORS
Free, interactive calculators built specifically for sole traders, plumbers, electricians, builders, and self-employed contractors to protect cash flow and improve profitability.
Job Profit & Margin Calculator
Revenue is vanity, profit is sanity. Calculate your exact gross profit, net margin, and effective hourly rate on every job.
Day Rate Calculator
Calculate the day rate and hourly equivalent you need to charge to cover overheads, holidays, sickness, and hit your target salary.
VAT Calculator
Quickly calculate VAT additions or subtractions at UK standard (20%), reduced (5%), or zero (0%) rates with net/gross breakdowns.
Mileage Claim Calculator
Estimate your yearly HMRC tax allowance for business travel using flat-rate mileage allowances for vans, cars, motorbikes, and bikes.
Markup vs Margin Calculator
Convert markup to margin instantly. Calculate client price and gross profit on materials to ensure your margins stay healthy.