For UK taxi and private hire operators, a vehicle is the core income-generating tool of the trade. Yet many drivers filing under the actual expenses method routinely overlook capital allowances on their tax returns, forfeiting thousands of pounds in legitimate tax relief.
What Are Capital Allowances?
HMRC does not permit you to deduct the full purchase price or standard accounting depreciation of a car directly against your trading income. Instead, tax relief is claimed through Capital Allowances—a statutory tax mechanism enabling you to write off the vehicle’s capital cost against taxable profits over time.
Key Distinction: Standard accounting depreciation is not tax-deductible under UK tax law. Only statutory HMRC capital allowances can be deducted from your trading turnover to establish your net taxable profit.
Why Claiming Is Essential
Omitting vehicle capital allowances artificially inflates your net taxable profit, leading to an unnecessarily high Income Tax, National Insurance, or Corporation Tax bill.
Claiming capital allowances ensures that the genuine economic depreciation of your working vehicle directly shelters your income, significantly reducing the amount of tax you owe.
Applicable Rates (2025/26 & 2026/27 Onwards)
Writing-down allowances (WDA) are determined by the vehicle's official CO₂ emissions recorded on your V5C registration certificate (logbook):
| Allowance Tier | Vehicle Criteria & CO₂ Emissions | Statutory Tax Relief Rate |
|---|---|---|
| 100% First-Year Allowance (FYA) | Brand-new, zero-emission electric vehicles (EVs) | 100% deduction in Year 1 Relief extended to April 2027 |
| Main Rate Pool | 1–50g/km CO₂ & second-hand electric vehicles | 18% per annum for 2025/26, reducing to 14% per annum from April 2026 (2026/27 onwards) on a reducing-balance basis. |
| Special Rate Pool | Over 50g/km CO₂ | 6% per annum on a reducing-balance basis. |
| Purpose-Built Black Cabs | Wheelchair-accessible Hackney carriages | 100% AIA Treated as plant & machinery, qualifying for Annual Investment Allowance. |
How to Claim Capital Allowances
Capital allowances are calculated during your annual tax preparation and formally submitted on your statutory returns:
- Sole Traders & Partnerships: Entered in the Capital Allowances box of the Self Assessment return (SA103S or SA103F).
- Limited Companies: Reported within the capital allowance computations on the Company Tax Return (CT600).
Crucial Rule on Methods: You must use the actual costs method rather than simplified flat-rate mileage. If you choose simplified mileage (45p/25p per mile), you are barred from claiming capital allowances on that vehicle.
Personal Use Adjustments & Record-Keeping
If you are a sole trader and use your licensed vehicle for non-business driving (such as personal errands, family trips, or weekend use), HMRC requires an apportionment. For example, if 20% of your annual mileage is private driving, your capital allowance claim must be reduced by 20%.
To substantiate your claim in the event of an HMRC enquiry or compliance audit, ensure you retain:
- Purchase Invoice or Bill of Sale verifying the initial vehicle purchase price and VAT status.
- Finance Agreement / HP Contract documenting finance fees, balloon payments, and interest breakdown.
- V5C Registration Certificate (Logbook) confirming the vehicle's official CO₂ rating.
- Business Mileage Records (platform trip sheets from Uber, Bolt, FreeNow, plus private odometer logs).
Maximise Your Driver Tax Relief with TaxNex Ltd
Navigating vehicle capital allowances, CO₂ pool transitions, and personal use adjustments requires precision. At TaxNex Ltd, we specialise in taxi and private hire driver accounting, ensuring you optimize your vehicle claims, stay fully compliant with HMRC, and keep more of your hard-earned earnings.