Speeding Fine Calculator
Enter the speed limit and your recorded speed to estimate your fine band, penalty points, and whether you may be eligible for a speed awareness course.
How the Calculator Works
The calculator uses the Sentencing Council's guidelines to determine which fine band applies based on how far over the speed limit you were driving. It then estimates the fine as a percentage of weekly income, the number of penalty points, and any risk of disqualification.
Band A applies when you are 1-9 mph over the limit (fine: 25-75% of weekly income, 3 points). Band B applies at 10-20 mph over (fine: 75-125%, 4-6 points or short disqualification). Band C applies at 21+ mph over (fine: 125-175%, 6 points or longer disqualification).
Speed awareness course eligibility is assessed using the NPCC threshold: you must be between the speed limit + 10% + 2 mph and the limit + 10% + 9 mph. Outside this range, a course is not normally offered.
Frequently Asked Questions
How accurate is this speeding fine calculator?
This calculator provides estimates based on Sentencing Council guidelines and NPCC prosecution thresholds. Actual outcomes depend on individual circumstances, the court, your driving record, and mitigating or aggravating factors. It should be used as a guide only.
What is the NPCC prosecution threshold?
The National Police Chiefs' Council (NPCC) guideline suggests prosecution for speeding at the speed limit plus 10% plus 2 mph. For example, in a 30 mph zone, the threshold is 35 mph. This is a guideline only and police forces have discretion to prosecute at any speed above the limit.
Does the calculator account for speed awareness course eligibility?
Yes. The calculator checks whether your speed falls within the typical speed awareness course range: between the limit + 10% + 2 mph and the limit + 10% + 9 mph. If eligible, the calculator will indicate this. You can only attend one course every three years.