UK speeding fines are calculated based on how far over the speed limit you were driving, your weekly take-home income (if the case goes to court), and any aggravating or mitigating factors. Offences are grouped into Band A (minor excess), Band B (moderate), and Band C (serious). The fine is set as a percentage of your weekly net income: 50% for Band A, 100% for Band B, and 150% for Band C — all subject to minimum (£100) and maximum (£1,000, or £2,500 on motorways) thresholds.

The Sentencing Council groups speeding into three bands based on how far over the limit you were. Band A covers minor excesses — for example 31–40 mph in a 30 zone — and attracts 3 penalty points and a fine of around 50% of weekly income. Band B covers more significant excess — 41–50 mph in a 30 zone — and carries 4–6 points or a short disqualification, plus a 100% weekly income fine. Band C covers the most serious speeding — 51 mph+ in a 30 zone — and carries 6 points or a disqualification of up to 56 days, plus a 150% fine.

The standard fixed penalty notice is £100. If the case goes to a magistrates’ court, the minimum fine is £100 and the maximum is £1,000 — or £2,500 if you were caught speeding on a motorway. The fine is always subject to these caps regardless of your income level. A surcharge of 40% (minimum £34) is also added to any court fine.

Band A speeding: 3 penalty points. Band B: 4–6 points, or a discretionary disqualification of 7–28 days. Band C: 6 points, or a discretionary disqualification of 7–56 days. Points stay on your licence for 4 years and are visible on it for that period. If you accumulate 12 or more points within any 3-year period, you face a totting-up disqualification of at least 6 months unless you can demonstrate exceptional hardship.

Yes, if this is your first speeding offence and your speed was within a certain range — typically no more than 10% + 9 mph above the limit (so up to 35 mph in a 30 zone, 46 in a 40, and so on) — you may be offered a National Speed Awareness Course (NSAC). Completing it means no fine and no points. It costs around £80–£100 and takes around 4 hours. You can only attend once every 3 years per force area. Availability is at the discretion of the local police force.

Most speeding offences are handled with a fixed penalty notice — no court appearance required. You will typically be summoned to a magistrates’ court if you were driving at Band B or C speeds, if you choose to contest the fixed penalty notice, if the offence involved aggravating features (such as a collision or driving with passengers), or if you failed to respond to a Notice of Intended Prosecution within 28 days. Band C motorway offences above 100 mph are almost always referred to court.

If you passed your driving test within the last 2 years (the probationary period), your licence will be automatically revoked if you accumulate 6 or more penalty points. This means even a single Band B speeding conviction (which can carry 4–6 points) could end your licence entirely. You would then need to apply for a provisional licence and pass both the theory and practical tests again before driving legally.

This calculator uses the Sentencing Council’s definitive guideline starting points and ranges to produce an indicative estimate. Actual penalties depend on the full circumstances of the offence, your previous driving record, any aggravating or mitigating factors the magistrate considers, and whether you plead guilty (which can reduce a court fine by up to one-third). This tool gives a reasonable ballpark — it is not a substitute for legal advice if you are contesting the offence or facing a disqualification.