Free estimator tool
Health and safety fine calculator
This free calculator estimates the fine range a court in England and Wales would work from when sentencing an organisation for a health and safety offence, using the Sentencing Council's definitive guideline for organisations. It takes about two minutes and follows the court's own order: culpability, harm, turnover, then aggravating and mitigating factors and any reduction for a guilty plea.
This tool provides an estimate only, based on the Sentencing Council's Health and Safety Offences Definitive Guideline (2016, amended June 2025). It does not constitute legal advice. Actual fines are determined by the courts and depend on the full circumstances of each case, the financial position of the offender, judicial discretion, and other factors not captured in this tool. Fines for organisations are unlimited. For specific legal advice, consult a qualified solicitor or ask Opus Safety for who to speak to.
How a court sets a health and safety fine
The guideline covers breaches of sections 2 and 3 of the Health and Safety at Work etc. Act 1974 and breaches of health and safety regulations. It has applied to every organisation sentenced on or after 1 February 2016. In outline, the court works through it in this order.
- Culpability. How far the organisation fell short of the standard expected: very high, high, medium or low.
- Harm. How serious the harm risked was and how likely it was to happen. The two combine into a harm category from 1 (most serious) to 4. If the offence exposed a number of workers or members of the public to the risk, or the breach was a significant cause of actual harm, the court must consider moving up a harm category or substantially up the range.
- Turnover. The organisation's annual turnover places it in a size band, and each band has a starting point and a range for every combination of culpability and harm.
- Adjustment. The court moves the starting point, usually within the range, for aggravating factors, such as previous convictions, and mitigating ones, such as a good health and safety record or steps taken voluntarily to remedy the problem.
- Proportionality. The court checks the fine against the organisation's overall means, using its accounts for the last three years, and considers wider impacts such as the effect on employees and on the ability to fix the problem.
- Reduction for a guilty plea. One-third for a plea at the first stage of proceedings, at most one-quarter after that, falling to one-tenth on the first day of trial.
- Compensation and ancillary orders. These include a remedial order to put right the matters that caused the offence.
What the starting points look like
The size bands are set by annual turnover: large is £50 million and over, medium is £10 million to £50 million, small is £2 million to £10 million, and micro is £2 million or less. For the most serious combination, very high culpability and harm category 1, the starting points are:
- Large organisation: £4,000,000, within a range of £2,600,000 to £10,000,000
- Medium organisation: £1,600,000, within a range of £1,000,000 to £4,000,000
- Small organisation: £450,000, within a range of £300,000 to £1,600,000
- Micro organisation: £250,000, within a range of £150,000 to £450,000
At the other end, a micro organisation with low culpability in harm category 4 starts at £200, within a range of £50 to £2,000. The fine itself is unlimited in both the magistrates' court and the Crown Court, and for very large organisations the court may go beyond the large-organisation ranges.
What the estimate covers
The calculator gives the range a court would start from on the answers you give. A real sentence depends on the full facts and the court's judgement, and it can sit outside the range. On top of the fine, the court can also order you to pay the prosecution's costs, which vary from case to case. Compensation and remedial orders sit outside the estimate.
The guideline places an organisation in the high category for things such as failing to put recognised industry standards in place, ignoring concerns raised by employees or allowing breaches to continue over a long period. Medium culpability covers systems that were in place but not sufficiently adhered to or implemented. Those are failures you can find and fix before anything goes wrong.
Check where you stand
If the estimate makes you want to look harder at your own arrangements, start with the free Safety Snapshot, which scores your health and safety management across six areas, including leadership, risk assessment, incident management and emergency preparedness. For an independent view of your sites, Opus's consultants carry out gap analysis and audits and give you a prioritised action plan.
Frequently asked questions
How are health and safety fines calculated?
Courts in England and Wales use the Sentencing Council's guideline for organisations. The court decides culpability and a harm category, uses the organisation's turnover to find a starting point and range, adjusts for aggravating and mitigating factors, checks the result is proportionate to the organisation's means, and then applies any reduction for a guilty plea.
Is there a maximum fine for a health and safety offence?
No. For organisations the fine is unlimited whether the case is heard in the magistrates' court or the Crown Court. The guideline's offence range runs from £50 to £10 million, and the court can go outside it, including for very large organisations.
Which turnover band is my organisation in?
Large is annual turnover of £50 million and over, medium is £10 million to £50 million, small is £2 million to £10 million, and micro is £2 million or less.
How much does a guilty plea reduce a fine?
A plea indicated at the first stage of proceedings earns a one-third reduction. After that the maximum is one-quarter, falling to one-tenth on the first day of trial, under the Sentencing Council's guilty plea guideline.
What do the culpability levels mean?
Very high is a deliberate breach of, or flagrant disregard for, the law. High is falling far short of the appropriate standard, or a serious or systemic failure to address risk. Medium is falling short in a way between high and low, or where systems were in place but not sufficiently adhered to or implemented. Low is not falling far short, for example where significant efforts were made but proved inadequate on this occasion.
What is a harm category?
It combines how serious the harm risked was (level A covers death, lifelong dependency on third-party care and significantly reduced life expectancy, level B covers impairment with a substantial and long-term effect on day-to-day activities or the ability to return to work, or a progressive, permanent or irreversible condition, level C everything else) with how likely that harm was. Harm category 1 is the most serious and 4 the least.
Is this legal advice?
No. It is an estimate based on the published guideline and the answers you give. If you are facing an investigation or prosecution, take advice from a solicitor.
Is the fine calculator free?
Yes. It shows an estimated fine range at the end. The full breakdown and the PDF report ask for your name, email and company.