Free UK Car, Mileage and VAT Calculators

Every Flex Drive tool in one place, grouped by topic. All calculators are free to use and run in your browser.

Tax & VAT

Car Tax (VED) Estimate vehicle excise duty

VAT Calculator Add, remove or compare VAT

Flat Rate Scheme VAT VAT due under the flat rate scheme

VAT Threshold Checker Do you need to register for VAT?

Mileage & Distance

Excess Mileage Charge Lease and PCP mileage penalties

HMRC Mileage Claims Approved business mileage rates

NHS Mileage Rates NHS excess and business travel

PCP Mileage Calculator Estimate excess mileage charges

Postcode Distance Driving and straight-line distance

Town to Town Distance Distance between two UK towns

Car Finance & Running Costs

Car Budget How much car your monthly budget buys

Car Finance HP and PCP monthly payments

Loan Payoff See how overpayments cut interest

Running Costs Monthly and annual operating costs

EV vs Petrol Running Costs Compare annual running cost of an EV and a petrol car

Total Ownership Cost Including depreciation

Business & Hire

Invoice Generator Create a simple UK invoice

Self-Drive Minibus Licence check and cost splitting

Vehicle Rental Pricing Hire cost and extra mileage

The tools and calculators are designed and developed by professionals in their respective fields but they still provide only estimates for guidance only. For decisions on tax, finance or legal matters, check with the relevant official source or a qualified adviser.