April 13, 2026 in United Kingdom — When ownership of a vehicle changes hands in the UK, road tax does not automatically transfer with it. The seller's unused tax is refunded pro-rata by the DVLA, and the buyer must tax the vehicle before driving it on any public road. Understanding this process prevents both parties from losing money or facing penalties. This guide covers the complete ownership transfer tax process for 2026.
What Happens to Road Tax When You Sell a Car
Road tax is tied to the vehicle registration, not the person. When a vehicle changes keeper, the DVLA calculates a pro-rata refund for any unused whole months remaining in the tax period. This refund goes to the seller, not the buyer.
The buyer starts a fresh tax period from the date they first tax the vehicle — there is no transfer of remaining tax credit between parties.
The Seller's Responsibilities — Notifying the DVLA
The seller must notify the DVLA of the change of keeper on the day of sale. This can be done:
Online (Fastest — Recommended)
Use GOV.UK sell your vehicle with the 11-digit V5C reference number. Enter the new keeper's name, address, and date of sale. The DVLA processes this within minutes and issues the tax refund within 5 working days via Direct Debit.
By Post
Fill in section 9 of the V5C (or the green slip) with the new keeper's details and send to DVLA, Swansea, SA99 1BN. Processing takes up to 4 weeks, which means the refund is delayed and the vehicle legally remains in the seller's name for longer.
The key difference: not notifying the DVLA leaves you liable for the vehicle. Any fines, congestion charges, or tolls incurred before the notification is processed are your responsibility.
The Buyer's Responsibilities — Taxing Immediately
The buyer must tax the vehicle before driving it on any public road — no exceptions. Driving an untaxed vehicle even a short distance results in a £80 Fixed Penalty Notice.
The buyer needs the green slip (new keeper notification) from the seller, which contains a 21-digit reference number. This lets you tax the vehicle immediately online at GOV.UK before the full V5C arrives by post.
- Get the green slip from the seller on the day of purchase
- Go to GOV.UK tax your vehicle
- Enter the 21-digit green slip reference and vehicle registration
- Pay the 12-month road tax by card or Direct Debit
- Print the confirmation — this acts as temporary proof of tax while waiting for the V5C
The Green Slip — Your Most Important Document at Purchase
The green slip (new keeper notification) is the tear-off section at the bottom of the V5C log book. It is your proof of authorised purchase and the key to taxing the vehicle immediately. Without it, you cannot tax the vehicle online until the DVLA sends you the full V5C.
If the seller has already notified the DVLA before you receive the green slip, the system may show the new keeper details are already processed. In this case, use your own V5C reference to tax the vehicle — it will arrive within 5 working days of the seller's notification being processed.
| Scenario | Buyer's Tax Options |
|---|---|
| Seller notified online on sale day | Green slip reference to tax immediately |
| Seller sent notification by post | Wait for DVLA processing, or tax with V5C when it arrives |
| Seller forgot to notify | Cannot tax until seller notifies — contact seller immediately |
| Buying from a dealer | Dealer handles notification and tax — confirm before driving |
V5C Replacement — If You Don't Have the Green Slip
If the seller has lost the green slip and you cannot tax the vehicle immediately, you have two options:
- Contact the seller and request they notify the DVLA online immediately — this generates a new V5C for you that can be used for taxing
- Apply for a replacement V5C online using form V62 (£25 fee) — the DVLA issues a new registration certificate that can be used to tax the vehicle
You cannot legally drive the vehicle without tax. If you need to move the vehicle urgently and the green slip is missing, the only legal option is to request the seller notify the DVLA online — this can be done within minutes.
Pro-Rata Road Tax Refund — Seller's Entitlement
The seller is entitled to a refund of any unused whole months remaining in the tax period, calculated from the date the DVLA processes the change of keeper notification. The refund is calculated as:
- Annual rate ÷ 12 = monthly credit
- Monthly credit × unused whole months = refund amount
- For a £195/year vehicle: £16.25 per unused whole month
The refund is paid automatically via the original payment method. Direct Debit payments are refunded within 5 working days. Card payments are refunded by cheque within 2-4 weeks.
Frequently Asked Questions
Can the buyer use the seller's remaining road tax?
No. The DVLA refunds unused tax to the seller automatically. The buyer pays for a fresh 12-month tax period from the date they tax the vehicle. There is no mechanism to transfer or assign remaining tax to the new keeper.
What if I buy a car and the seller hasn't notified DVLA?
Contact the seller immediately and ask them to notify the DVLA online. This takes minutes and generates the V5C for you. Do not drive the vehicle until this is done — the vehicle legally remains in the seller's name and driving it untaxed is an offence.
Does the buyer pay road tax for the first year?
Yes. The buyer pays road tax from the date they first tax the vehicle. The previous keeper's tax period ends on the date the DVLA processes the change of keeper notification. Any unused months from the previous keeper's payment are refunded to them.
Can I tax a car on the same day as buying it?
Yes, on the same day using the green slip reference. The buyer can tax the vehicle at any time — even before the seller's DVLA notification is processed. The DVLA system accepts the new keeper details and processes both simultaneously.
Conclusion
The seller notifies DVLA on the day of sale and receives a pro-rata refund. The buyer taxes immediately using the green slip. Always check the vehicle's tax status before buying to avoid surprises. Use our UK car tax calculator to budget for your first year's road tax.