KnowMyPay

Car & motoring calculators

Road tax, company car BIK, EV running costs and finance.

16 calculators · cited to gov.uk · 2026/27

Pay and figures by amount

Reference pages that answer a specific figure directly, from the same 2026/27 rules and sources as the calculators.

Guides for car & motoring

Clear explanations of the rules behind these calculators, checked against gov.uk for 2026/27.