
The quickest and most reliable way to check if a car is taxed in the UK is to use the official government's online vehicle tax check service. You only need the vehicle's registration number (license plate). An untaxed car is illegal to drive or keep on a public road, and the owner faces hefty fines and penalties.
How to Check Your Vehicle's Tax Status
It is the owner's legal responsibility to tax the vehicle. Even if you aren't driving it, if it's parked on a public road, it must be taxed or officially declared SORN (Statutory Off-Road Notification). If the vehicle is SORN, it must be kept on private land like a driveway or garage.
| Tax Band (Representative Examples) | 12-Month Rate (Petrol/Diesel) | 12-Month Rate (Alternative Fuel) | Key Factor |
|---|---|---|---|
| Up to 100g/km CO2 | £0 | £0 | CO2 Emissions |
| 101-110g/km CO2 | £20 | £10 | CO2 Emissions |
| 111-120g/km CO2 | £30 | £20 | CO2 Emissions |
| 121-130g/km CO2 | £135 | £125 | CO2 Emissions |
| 131-140g/km CO2 | £165 | £155 | CO2 Emissions |
| Over 255g/km CO2 | £735 | £725 | CO2 Emissions |
| List Price over £40,000 (new) | Standard Rate + £410 surcharge | Standard Rate + £410 surcharge | Vehicle Value |
| Electric Vehicle (EV) | £0 (until 2025) | N/A | Fuel Type |
If you're buying a used car, always check the tax status online before handing over any money. The tax does not transfer with the vehicle; the new owner must tax it immediately upon purchase.

Just use the GOV.UK website. Seriously, it takes 30 seconds. Type in the license plate, and it tells you right away if the car is legal to drive. I found out the hard way after buying my first used car. The dealer said it was taxed, but it wasn't. I got a fine in the mail a week later. Always double-check yourself online; don't take anyone's word for it.

Beyond just legality, an untaxed car is a financial red flag. If the previous owner couldn't be bothered with the tax, what else did they skip? Maintenance? Servicing? Checking the tax status is the first step in my used car inspection checklist. It shows the owner is responsible. A clean tax record, verified officially, gives me much more confidence in the vehicle's overall history before I even go for a test drive.

My main concern is avoiding any legal trouble. I don't want to be pulled over or get a penalty notice because of an oversight. The system is fully automated now with cameras that read license plates. They automatically flag untaxed vehicles. So even if you drive an untaxed car just once to the store, you're likely to get caught. The peace of mind from a quick online check is worth it. It’s not just about the fee; it’s about complying with the law.


