What the Dartford Crossing Now Costs (and How to Avoid a £70 Fine)

More than 150,000 vehicles use the Dartford Crossing every day, and a large share of those drivers are passing through for the first time or only occasionally. That is exactly who the charging system catches out. There are no barriers and no booths, so it is easy to drive across, forget to pay, and receive a £70 penalty in the post. With the car charge now at £3.50 a crossing, here is what the Dart Charge costs, the deadline you must not miss, and how to make sure a quick trip over the Thames does not turn into a fine.

What the Dart Charge now costs

The charge for a car is £3.50 for a one-off payment, or £2.80 if you hold a pre-pay account. It applies in both directions, every day between 6am and 10pm. Vans, buses, coaches and other two-axle goods vehicles pay £4.20, or £3.60 on an account, while larger vehicles with more than two axles pay £8.40, or £7.20 on an account. Motorcycles, mopeds and quad bikes cross free at any time.

Those rates have applied since 1 September 2025, when the charge rose for the first time in years. The car charge went up by a maximum of £1. The transport minister, Lilian Greenwood, told Parliament that the previous levels were “no longer sufficient to achieve their stated aim of managing demand so that the crossing works well for users and local people”. She pointed out that demand has grown by 7.5 per cent in the eleven years since the toll booths were removed, with the crossing now carrying more than 150,000 vehicles on an average day and up to 180,000 at peak, “well in excess of the crossing’s design capacity”.

Greenwood acknowledged the change would be “unwelcome news” but said the new charges remain “significantly lower” than they would have been had they tracked inflation since the tariff was last fully revised in 2014. People who live in Dartford or Thurrock and sign up to the local resident scheme pay £25 for unlimited crossings across a whole year, a heavily discounted rate that recognises how many rely on the crossing for everyday journeys.

The deadline that catches drivers out

The single most important thing to know is the payment deadline. Because there are no barriers, you do not pay at the crossing itself. Instead you must pay by midnight on the day after you cross, or in advance. Miss that window and the system, which reads your number plate automatically, treats the crossing as unpaid and issues a Penalty Charge Notice.

That penalty is £70. It is reduced to £35 if you pay within 14 days, but it rises to £105 if you fail to pay within the original period. For a £3.50 crossing, forgetting to pay can therefore cost you twenty times the charge, and drivers who cross several times before realising can rack up multiple penalties at once. This is the trap for occasional users and for visitors who do not know the system, since nothing physically stops you at the roadside to remind you.

Crucially, journeys made between 10pm and 6am are free, as there is no need to manage demand overnight. If you cross within those hours you owe nothing and need do nothing. The free period, the motorcycle exemption and the bicycle pick-up service are the only ways across without a charge during the day.

How to pay and avoid a penalty

The simplest protection for anyone who uses the crossing more than rarely is a pre-pay account, which also gives you the lower £2.80 car rate. With an account set up, crossings are deducted automatically and you cannot forget. For one-off trips, the steps below keep you on the right side of the deadline:

• Pay online at the official Dart Charge service, by phone, or in person at a participating retail outlet. Pay by midnight on the day after you cross at the latest.
• Pay in advance if you know you have a trip coming up. You can pay for a future crossing and remove the risk of forgetting entirely.
• Use only the official government service. Searching for “Dart Charge” can throw up copycat websites that add a surcharge or, worse, take your details. The genuine service is on gov.uk.
• If you cross between 10pm and 6am, do nothing, because the crossing is free in those hours.
• Set up an account if you commute or travel through regularly, both for the lower rate and to avoid penalties altogether.

If a penalty does arrive and you believe it is wrong, for example because you paid on time or crossed during the free overnight period, you have the right to challenge it. Do so promptly, within the 14-day window, so that the reduced rate still applies if your challenge is unsuccessful. The principles are similar to contesting other automated penalties, which we cover in our guide to challenging a yellow box junction fine.

Hire cars and company vehicles deserve a special mention, because this is where penalties multiply quietly. If you cross in a rental and do not pay, the charge and any penalty are usually passed back to the hire company, which then bills you, often with an administration fee on top. The same applies to many company car and van fleets. If you drive a vehicle that is not your own across the crossing, check who is responsible for paying and confirm it has been done, rather than assuming the keeper will handle it.

Foreign-registered vehicles are caught by the system too. Drivers visiting from abroad sometimes assume an overseas plate puts them out of reach of enforcement, but the charge applies regardless of where a vehicle is registered, and unpaid penalties can be pursued. For overseas visitors hiring a car in the UK, the rental company’s payment arrangements are the safest route, and it is worth asking about them at the desk.

Why the charge is rising and what comes next

The government has been candid that the increase is about managing demand on a crossing that is well over capacity. Greenwood linked it directly to the case for new infrastructure, noting that the strain “highlights the need for the additional capacity” the Lower Thames Crossing is intended to provide, a project the government has backed with £590 million of initial funding. Until that opens, the Dartford Crossing remains the only fixed road crossing of the Thames east of London, and the charge is the lever ministers are using to keep traffic moving.

For drivers, the takeaway is less about the politics and more about the practical risk. The charge itself is modest. The penalty for missing it is not. Rising charges to use the road network are becoming a familiar theme, from city congestion zones to the cost of stopping on a motorway, as our look at the two-hour parking limit at motorway services shows.

What to do

If you are crossing once, pay by midnight the day after through the official gov.uk service and avoid copycat sites. If you cross regularly, open a pre-pay account for the lower rate and automatic payment, and Dartford or Thurrock residents should sign up for the £25 annual scheme. Above all, diarise the deadline, because the gap between a £3.50 charge and a £70 fine is simply a missed payment. If you are driving someone else’s vehicle, a hire car or a company van, confirm who is paying before you set off, and keep a record of any payment you make. A few seconds of admin on the day of your trip is all that stands between a routine crossing and an avoidable penalty in the post.

Sources:

• https://www.fleetnews.co.uk/news/drivers-to-pay-more-to-use-dartford-crossing-government-says-current-dart-charge-unsustainable
• https://www.gov.uk/pay-dartford-crossing-charge
• https://nationalhighways.co.uk/our-roads/dart-charge/