Calculator hub
Free Business Calculators for UK Trades
Interactive calculators built specifically for plumbers, electricians, HVAC engineers, and other UK trades. Price jobs properly, forecast tax, and understand your margins in seconds.
CIS Tax Calculator
Calculate your net pay after 20% or 30% CIS deductions. Free for UK subcontractors.
Use calculatorHourly Rate Calculator
Work out what to charge per hour based on your costs, desired profit, and working hours.
Use calculatorDay Rate Calculator
Calculate what to charge per day. UK averages: Labourers £112-£280, Electricians £300-£500.
Use calculatorMarkup Calculator
Calculate selling price from cost + markup. Most UK trades markup materials 20-40%, labour 30-50%.
Use calculatorQuote Calculator
Build professional quotes with materials, labour, markup, and contingency. Get pricing right.
Use calculatorJob Profit Margin Calculator
Calculate gross profit, net profit, and markup percentage for any job.
Use calculatorSelf-Employed Tax Calculator
Estimate your tax bill including Income Tax, National Insurance, and CIS credits.
Use calculatorCorporation Tax Calculator
Calculate tax on limited company profits. Small profits rate 19%, main rate 25%. Know what you owe HMRC.
Use calculatorTrue Labour Cost Calculator
Calculate real cost of employees: wages + NI + pension + holidays. Know what you're really paying.
Use calculatorApprentice Cost Calculator
Calculate true cost of apprentices including wages, training, and government funding.
Use calculatorOverhead Cost Calculator
Calculate van, insurance, tools, premises costs. Know your daily overhead burn rate and break-even point.
Use calculatorCash Flow Forecast Calculator
Forecast income vs expenses to predict cash position. Know if you'll have enough to cover bills.
Use calculatorVan Running Cost Calculator
Calculate cost per mile including fuel, insurance, maintenance, depreciation, and tax.
Use calculatorLease vs Buy Calculator
Compare leasing vs buying vans and equipment. Total cost, cash flow impact, and tax benefits.
Use calculatorInvoice Factoring Calculator
Calculate cost of selling invoices vs waiting for payment. Factoring typically costs 18-42% APR.
Use calculatorMaterial Waste Calculator
Calculate waste percentage and cost. Healthy: <5%, Acceptable: 5-10%, Problem: >10%.
Use calculatorPayment Terms Calculator
Compare payment terms (7, 14, 30 days). See APR cost of early payment discounts.
Use calculatorBreak-Even Calculator
Work out how many jobs you need to cover your fixed costs and start making profit.
Use calculatorComing soon
Built for UK trades
These aren’t generic online calculators. Every tool uses current HMRC tax bands, CIS rules, and real cost benchmarks from Toolfy customers across the UK.
No email capture
Use them between jobs, in the van, or while quoting. No downloads, no forms—just quick answers.
Always current
Budgets change tax rates every year. We update each calculator when HMRC publishes new thresholds, so you’re never quoting with old numbers.
Connected to Toolfy
When you’re ready, Toolfy automates the same calculations inside your jobs, invoices, and payments—no spreadsheets required.
Bring the numbers into one place
Stop re‑entering the same figures into separate tools. When you're ready, Toolfy helps you keep jobs, quotes, invoices, and payments connected so the maths feeds your day‑to‑day decisions.