Forgot to Pay the Dartford Crossing? Here is What to Do Right Now
Do not panic. Depending on when you crossed, you may still be able to pay without any penalty. Let us figure out your situation and give you a clear plan of action.
When Did You Cross?
Select the option that best describes your situation. We will give you personalised advice based on how much time has passed since your crossing.
How to Pay Late — Every Option
If you have missed the midnight deadline but it has only been a day or two, try paying through the normal channels. The system does not always cut off exactly at midnight, and many drivers have reported successful late payments up to three days after their crossing. Here are your options, listed from fastest to slowest.
1Pay online (fastest)
Go to gov.uk/pay-dartford-crossing-charge and enter your registration number. If the system still shows your crossing as payable, complete the payment immediately. This is the quickest way to resolve the situation and takes about two minutes.
2Pay via the Caura app
If you have the Caura app installed, try paying through it. Caura sometimes processes payments that are slightly past the official deadline. No extra fees apply.
3Call 0300 300 0120
Phone the Dart Charge helpline (open 8am-8pm, seven days). Explain that you missed the deadline. The agent may be able to process the payment manually. Being polite and honest about the situation works best — these agents deal with thousands of late-payment calls.
The First-Time Grace Period
One of the most important things to know about Dart Charge fines — and something that most guides fail to mention — is that first-time offenders are often given the chance to pay just the original crossing charge instead of the full £70 penalty. If you have never received a Dart Charge PCN before, this could save you £66.50.
When your PCN arrives in the post, read it carefully. First-time offenders frequently report that the letter includes an option to pay the original toll (£3.50 for a car) within 14 days instead of the penalty amount. If this option is included, take it immediately. The 14-day clock starts from the date the PCN is issued, not the date you receive it, so time is of the essence.
This grace period is not officially guaranteed and appears to be at the discretion of the charging authority. However, it has been widely reported since the Dart Charge system launched in 2014 and seems to be applied consistently to first-time offenders. It only applies once — any future PCNs will incur the standard penalty regardless of your previous good record.
Key takeaway:
If this is your first PCN, do not panic. Read the letter carefully, and you may only need to pay £3.50 instead of £70. But do not delay — the 14-day window is strict.
What Happens If You Do Not Pay: The Full Escalation
If you do not pay your Dart Charge PCN, the costs escalate rapidly. What starts as a £3.50 crossing charge can eventually exceed £250 with court costs. Here is the timeline of escalation, so you understand exactly what is at stake.
| Stage | Amount | Timeframe | What to Do |
|---|---|---|---|
| Original charge | £3.50 | By midnight next day | Pay online, phone, or app |
| PCN (reduced) | £35 | Within 14 days | Pay to halve the penalty |
| PCN (full) | £70 | 14-28 days | Pay or appeal within 28 days |
| Charge Certificate | £105 | After 28 days | Pay immediately to avoid court |
| County Court | £157.50+ | Court enforcement | Plus court costs and bailiff fees |
For full details on each stage and how to appeal, see our comprehensive fines and penalties guide.
How to Make Sure This Never Happens Again
Forgetting to pay the Dart Charge is incredibly common — millions of PCNs have been issued since the barrier-free system launched. The good news is that there are several straightforward ways to make sure you never forget again. Here are the three most effective options, from best to simplest.
Best: Pre-Pay Account
Set up a Dart Charge pre-pay account with auto top-up. Each crossing is automatically deducted. You never need to remember to pay, and you save 20% per crossing (£2.80 instead of £3.50). This is the gold standard solution.
Set up pre-payGood: Caura App
Download the Caura app and keep it on your phone home screen. After each crossing, it takes just two taps to pay. Caura also sends reminders, which is helpful for occasional crossers.
Learn moreSimple: Phone Alarm
Immediately after crossing, set a phone alarm for 8pm that evening labelled "Pay Dart Charge £3.50". Low-tech but effective for one-off crossings where you do not want to set up an account.
No setup requiredWhy So Many People Forget to Pay
You are not alone in forgetting to pay the Dart Charge. The barrier-free system is a major factor — when toll barriers were removed in 2014, there was no longer a physical prompt to pay at the point of crossing. Drivers pass through what feels like a normal motorway with ANPR cameras overhead, and many do not realise they need to take separate action to pay. This is especially true for first-time crossers, tourists, and drivers who remember the old barrier system.
The signage approaching the crossing does indicate that payment is required, but at motorway speeds with heavy traffic, it is easy to miss or not fully process the information. Additionally, the payment deadline of midnight the day after crossing means you need to remember to take action within a specific window — something that is easy to forget in the course of a busy day, especially if you crossed as part of a longer journey.
National Highways has issued over four million Penalty Charge Notices since Dart Charge launched, generating significant revenue from penalties alone. Consumer groups have criticised the system for being insufficiently clear, but the courts have consistently upheld the charging regime. The lesson is clear: the system is not designed to give you the benefit of the doubt, so protecting yourself with a pre-pay account or a payment reminder is essential.