Taxable Benefits Calculator
Our taxable benefits calculator works out income tax and NI on employee benefits in kind (BiK). HMRC assigns a taxable value to benefits like company cars based on CO2 and list price.
Taxable Benefits Calculator
Calculate the tax you owe on company car, medical and other benefits-in-kind for 2026/27.
Enter your salary and then each taxable benefit in kind you receive. Company car BIK is calculated as a percentage of the car’s list price based on CO2 emissions — low-emission and electric vehicles have much lower BIK percentages. Private medical insurance is taxed at its cost to the employer. Interest-free or cheap loans above £10,000 attract a BIK on the difference between the HMRC official rate and any rate charged. Other benefits such as living accommodation, fuel benefit, and some vouchers may also be taxable. The calculator shows the additional income tax you pay on your benefits — importantly, employees pay no National Insurance on benefits in kind. Employers pay Class 1A NI at 15% on the value, which the calculator shows separately for transparency.