Tax on a hybrid company car depends almost entirely on whether the car is a plug-in model and, if it is, how far it can travel on electric power alone. A plug-in hybrid with more than 130 miles of electric range is taxed on just 3% of its list price for the 2025/26 tax year. One with less than 30 miles of electric range is taxed on 15%. A self-charging hybrid, which can’t be plugged in, is taxed like an ordinary petrol or diesel car, usually somewhere between 17% and 37% of list price. That single distinction changes the annual bill more than any other factor, so it’s the right place to start.
Plug-in Hybrid or Self-Charging Hybrid?
A plug-in hybrid (PHEV) can be charged from an external source and typically emits between 1 and 50 g/km of CO2. These are the cars that qualify for the favourable Benefit-in-Kind bands. A self-charging hybrid generates electricity only through regenerative braking and cannot be plugged in. HMRC treats self-charging hybrids the same as conventional petrol or diesel cars, with the BiK rate set purely by CO2 output.1GOV.UK. Tax on Company Cars
On a £40,000 car, the gap is dramatic. A plug-in hybrid at 3% BiK produces a taxable benefit of £1,200; a self-charging hybrid at 28% BiK produces £11,200. A basic-rate taxpayer would owe £240 on the first and £2,240 on the second. If your employer offers both, the plug-in almost always wins on tax.
The BiK Bands for Plug-in Hybrids
For plug-in hybrids emitting 1 to 50 g/km of CO2, HMRC applies one of five percentages based on the car’s official WLTP electric range. For 2025/26 the rates are:2GOV.UK. Work Out the Appropriate Percentage for Company Car Benefits (480: Appendix 2)
- 130 miles or more: 3%
- 70 to 129 miles: 6%
- 40 to 69 miles: 9%
- 30 to 39 miles: 13%
- Less than 30 miles: 15%
The range figure is the manufacturer’s certified WLTP number, which appears on the vehicle’s registration certificate. It’s fixed at certification, so you can’t move into a lower band by driving more economically. For comparison, a fully electric car with zero emissions also sits at 3% for 2025/26.2GOV.UK. Work Out the Appropriate Percentage for Company Car Benefits (480: Appendix 2) A long-range plug-in effectively matches an EV’s tax position; a short-range one loses that advantage quickly.
Working Out What You’ll Pay
Every calculation starts with the P11D value: the car’s official list price including VAT, delivery charges, and any factory-fitted optional extras. Road tax and the first registration fee are excluded.3GOV.UK. Calculate Tax on Employees’ Company Cars The P11D is fixed when the car is first made available to you and doesn’t fall as the car depreciates.
Multiply the P11D by the BiK percentage to get the taxable benefit, then multiply that by your income tax rate to get the annual bill.3GOV.UK. Calculate Tax on Employees’ Company Cars
Take a plug-in hybrid with a P11D value of £42,000 and an electric range of 75 miles. The 2025/26 BiK rate is 6%. The taxable benefit is £42,000 × 6% = £2,520. A basic-rate taxpayer at 20% owes £504 for the year. A higher-rate taxpayer at 40% owes £1,008. An additional-rate taxpayer at 45% pays £1,134. Scottish taxpayers face different bands running from 19% to 48% for 2025/26, so the same car costs more or less depending on where you live.
HMRC collects the tax through your tax code rather than sending a bill. Your employer reports the car, HMRC reduces your personal allowance, and the extra tax comes out of monthly pay automatically.
Cutting the P11D Value
Optional extras add to the P11D permanently. A £2,000 factory tech pack raises your tax bill for as long as you drive the car, so skipping options you don’t need is a simple saving.
You can also reduce the P11D by making a capital contribution toward the cost of the car, up to a maximum of £5,000. This is a one-off payment, not a monthly deduction, and it lowers the base figure used in every subsequent year’s calculation.4HM Revenue & Customs. Employment Income Manual – EIM24355 – Car Benefit Calculation Step 3: Capital Contributions: The Amount Deductible On a £45,000 plug-in hybrid, a £5,000 contribution drops the P11D to £40,000 and saves a basic-rate taxpayer somewhere between £30 and £150 each year depending on the BiK band.
Free Fuel? Expect a Separate Charge
If your employer pays for fuel used on personal journeys, a fuel benefit charge applies on top of the car benefit. HMRC uses a fixed multiplier, £28,200 for 2025/26 (rising to £29,200 for 2026/27), and applies the same BiK percentage as the car itself.5HM Revenue & Customs. Taxable Fuel Provided for Company Cars and Vans (480: Chapter 13)6GOV.UK. Van Benefit Charge and Fuel Benefit Charges for Cars and Vans for Tax Year 2026 to 2027
On the same 75-mile hybrid at 6% BiK, the fuel benefit would be £28,200 × 6% = £1,692. A basic-rate taxpayer would owe an extra £338.40 a year. The charge applies in full regardless of how much personal fuel your employer actually provides. Even a single top-up triggers the whole amount.
The way to avoid it is to reimburse your employer for all private mileage at HMRC’s advisory fuel rates. For hybrids, HMRC treats the car as either petrol or diesel depending on the combustion engine type.7GOV.UK. Advisory Fuel Rates Keep a mileage log separating business and personal journeys. Reimburse at or above the advisory rate and the fuel benefit charge disappears completely. On a plug-in hybrid where most short trips run on electricity, the actual reimbursement cost tends to be low.
Salary Sacrifice Makes the Numbers Stronger
Salary sacrifice is where the biggest savings come from and the main reason so many employers now offer hybrids. You agree to give up a portion of your gross salary in exchange for the car. Because the deduction happens before tax and National Insurance are calculated, you save on both.
The arithmetic works well for plug-in hybrids because of the low BiK rates. You pay income tax and employee NIC only on the BiK value, say 3% or 6% of list price, rather than on the full salary you gave up. For a higher-rate taxpayer sacrificing £500 a month of gross salary for a plug-in hybrid at 6% BiK, the effective cost after tax and NIC savings can drop significantly compared to buying the same car personally with after-tax income.
Some practical limits apply. Your salary after the sacrifice must remain above the National Minimum Wage, which rules out expensive cars for lower earners. The reduced gross salary can also affect mortgage applications and any workplace benefit calculated from salary, such as employer pension contributions or life cover. Statutory payments like maternity and paternity pay are based on pre-sacrifice salary, so those are protected.
Rates Are Rising Through 2027/28
The government has confirmed BiK rates through 2027/28, and they rise by one percentage point per year across every plug-in hybrid band:
- 130+ miles electric range: 3% (2025/26), 4% (2026/27), 5% (2027/28)
- 70 to 129 miles: 6%, 7%, 8%
- 40 to 69 miles: 9%, 10%, 11%
- 30 to 39 miles: 13%, 14%, 15%
- Less than 30 miles: 15%, 16%, 17%
Plug-in hybrids remain dramatically cheaper than conventional cars for company car tax, but the gap is narrowing at the short-range end. A car with less than 30 miles of electric range will sit at 17% by 2027/28, not far below a conventional petrol car in the 51 to 54 g/km bracket at 18%. If you’re choosing a plug-in hybrid mainly for the tax benefit, prioritise electric range. The savings increasingly favour cars that can cover 70 miles or more on battery alone.