Free business admin tools.
Seven quick sums for running the business, not just the job: mileage, van running costs, tax and NI, break-even, holiday pay, cash flow timing and the true cost of an apprentice.
Free tool
Mileage claim calculator
HMRC approved rates — miles in, claim total out.
Free tool
Van cost-per-mile calculator
Fuel plus fixed costs, spread across the miles you drive.
Free tool
Self-employed tax & NI estimator
Trading profit, converted to income tax and Class 4 NI.
Free tool
Break-even calculator
Fixed costs ÷ gross margin — the revenue floor for the year.
Free tool
Holiday pay accrual calculator
The standard 12.07%-style accrual for irregular hours.
Free tool
Payment terms cash gap calculator
Days between paying suppliers and getting paid, in pounds.
Free tool
Apprentice true cost calculator
Wage, NI, training and unproductive hours, all in one figure.
Seen enough? Claim your patch.
TradesInvo captures every enquiry, replies first, and runs it to a booked, quoted, paid job. Early access is five founder slots per postcode — check yours.