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Free tools for UK businesses

Calculators that work as you type and show how each answer is worked out, with the rule behind it and a link to GOV.UK.

CalculatorMileage allowance calculator Tax-free mileage for a car, van, motorcycle or bicycle at HMRC’s approved rates, with passengers.CalculatorVAT calculator Add VAT to a price or take it out, at 20%, 5% or 0%, with the working shown.CalculatorLate payment interest calculator Statutory interest at 8% over base rate on a late business invoice, and the fixed compensation.