Gender Pay Gap Calculator UK
Calculate mean and median gender pay gap percentages — for employers and pay equity analysis.
Calculate Gender Pay Gap
UK Gender Pay Gap Reporting Requirements
UK employers with 250+ employees must publish gender pay gap data annually by 5 April (private/voluntary) or 30 March (public sector). The report must include: mean and median gender pay gap in hourly pay, mean and median bonus pay gap, proportion of men and women receiving bonuses, and proportion of men and women in each pay quartile.
The UK median gender pay gap was 13.1% in 2024 (ONS data). The gap is largest in financial services and senior roles. Employers must report to the Government Equalities Office and publish results on their website for at least 3 years.
Frequently Asked Questions
What is the gender pay gap?
The gender pay gap is the difference between average earnings of men and women across an organisation or the economy. It is expressed as a percentage of men's earnings.
What is the UK gender pay gap in 2025?
The ONS reported a median UK gender pay gap of 13.1% for full-time and part-time workers in 2024. The gap for full-time workers alone was 7.0%.
Who must report gender pay gap data?
Employers with 250 or more employees in Great Britain (not Northern Ireland) must report annually. This covers around 10,000 employers.
What is the difference between mean and median pay gap?
Mean gap uses average pay (affected by outliers). Median gap uses the middle earner (more representative of typical workers). Both must be reported.
When is the gender pay gap reporting deadline?
Private and voluntary sector: 5 April each year. Public sector: 30 March each year. Data snapshot date is 5 April for private/voluntary and 31 March for public sector.
Is the gender pay gap the same as unequal pay?
No — the pay gap measures differences in average pay across an organisation. Unequal pay is paying men and women differently for the same work, which is illegal under the Equality Act 2010.
What is a gender pay gap narrative?
Alongside mandatory statistics, employers are encouraged (but not required) to publish a narrative explaining the gap and actions being taken to reduce it.
What happens if I don't report gender pay gap data?
The EHRC can take enforcement action. While there is no direct financial penalty, naming and shaming and reputational damage are significant.
How do I calculate the mean gender pay gap?
Subtract mean female hourly pay from mean male hourly pay, divide by mean male hourly pay, multiply by 100. Formula: ((Mean Male - Mean Female) / Mean Male) × 100.
What causes the gender pay gap?
Key factors include more women in part-time work, underrepresentation of women in senior roles, differences in sectors, career breaks for caregiving and unconscious bias in hiring and promotion.
Can the gender pay gap be negative?
Yes — a negative gap means women are paid more on average. Some sectors (e.g., healthcare) may show a negative gap for median pay.
Where do I submit gender pay gap data?
Report at the government's gender pay gap service: gender-pay-gap.service.gov.uk. You must also publish results on your company website.