For years, gender pay gap reporting existed in two categories: mandatory in a handful of jurisdictions and voluntary everywhere else. Most companies in the voluntary category treated it accordingly, as something progressive organisations did for brand reasons and everyone else quietly ignored.

That era is over.

The EU Pay Transparency Directive is now in force. The UK regime has been running since 2017 and is strengthening. Australia expanded its mandatory reporting obligations in 2024 and 2025. The US has no federal mandate yet, but state-level disclosure requirements are spreading and the EEOC has proposed expanded EEO-1 pay data collection. The global direction is clear: gender pay gap reporting is moving from voluntary best practice to legal obligation, and the pace of that shift is accelerating.

This guide covers what you must disclose, how to calculate it correctly, what the 5% trigger means in practice, how the UK and EU regimes differ, what Australia and the US require, and how to build the pay equity infrastructure that makes reporting accurate, defensible, and sustainable.

What Is a Gender Pay Gap and Why Does It Exist?

A gender pay gap is the difference in average pay between men and women across an organisation. It is not the same as unequal pay, paying men and women differently for the same job, which is illegal in most jurisdictions. The gender pay gap is a structural measure that reflects differences in the roles men and women occupy, the levels they hold, and the pay attached to those roles.

The average gender pay gap across EU member states is 13%, according to Eurostat. In the UK, the median full-time gender pay gap was 7.0% in the April 2025 snapshot. In Australia, the national gender pay gap is approximately 21.8% on a total remuneration basis according to the Workplace Gender Equality Agency.

Understanding why the gap exists is essential for reporting accurately and acting effectively. The main drivers are typically occupational segregation, women are overrepresented in lower-paid sectors and roles, seniority concentration, women are underrepresented at senior levels, part-time and flexible working patterns that correlate with lower average pay, and in some cases direct pay discrimination that only becomes visible when the data is disaggregated at a fine enough level.

Raw Gap vs Adjusted Gap
The raw gender pay gap compares average pay across all men and all women regardless of role, level, or any other factor. The adjusted gap controls for role, level, tenure, and performance, showing whether gaps remain after accounting for objective differences. Both measures matter: the raw gap reveals structural representation issues, while the adjusted gap reveals potential pay discrimination. Regulators are asking for the raw gap. Internal equity analysis should examine both.

The Global Reporting Landscape: Who Must Report and When

The mandatory gender pay gap reporting map is expanding rapidly. Here is the current position across the major jurisdictions as of June 2026.

European Union, EU Pay Transparency Directive

The EU Pay Transparency Directive (Directive 2023/970) entered into force on June 6, 2023 with a transposition deadline of June 7, 2026. The first mandatory pay gap reports are due in June 2027 using 2026 calendar year data, meaning the data collection window is already open and has been running since January 1, 2026.

Employer SizeFirst Report DueReporting FrequencyData Period
250+ employees7 June 2027AnnuallyPrior calendar year
150 to 249 employees7 June 2027Every 3 yearsPrior calendar year
100 to 149 employees7 June 2031Every 3 yearsPrior calendar year
Under 100 employeesNot mandated by the DirectiveN/AMember states may extend

Source: EU Pay Transparency Directive 2023/970 Article 9; Sequoia EU Pay Transparency February 2026 Update.

The Directive applies based on where employees are located, not where the employer is headquartered. A US-headquartered company with 200 employees in Germany and France must comply with the Directive's reporting requirements for those employees.

United Kingdom, The Gender Pay Gap Regulations

The UK's Gender Pay Gap Information Regulations 2017 have been in force since 2017. Private and voluntary sector employers with 250 or more employees on the snapshot date of April 5 each year must publish an annual gender pay gap report by April 4 the following year.

Public sector employers with 250 or more employees use a March 31 snapshot date and must publish by March 30 the following year.

Required MetricDefinitionPublished Where
Mean gender pay gapDifference in average hourly pay between men and womenGovernment portal and own website
Median gender pay gapDifference in the midpoint hourly pay between men and womenGovernment portal and own website
Mean bonus gapDifference in average bonus pay between men and womenGovernment portal and own website
Median bonus gapDifference in midpoint bonus pay between men and womenGovernment portal and own website
Bonus proportionsShare of men and women receiving a bonusGovernment portal and own website
Quartile distributionProportion of men and women in each pay quartileGovernment portal and own website

Source: The Equality Act 2010 (Gender Pay Gap Information) Regulations 2017; DavidsonMorris Gender Pay Gap Reporting 2026 Guide; Sysarb UK Gender Pay Transparency Tracker.

The UK regime does not currently require employers to publish an action plan, though regulators strongly encourage a contextual narrative alongside the numbers. The Equality and Human Rights Commission can investigate non-compliance and treats non-reporting as an unlawful act under the Equality Act 2010. There are no fixed financial penalties written into the legislation, but a court order for non-compliance can result in unlimited penalties.

Australia, Workplace Gender Equality Act

Australia has had mandatory gender pay gap reporting for employers with 100 or more employees for several years. Since early 2024, expanded data requirements apply, and the Workplace Gender Equality Agency (WGEA) now has the power to publicly name individual employers' gender pay gaps, a significant enforcement escalation.

Since March 2025, employers with 500 or more employees must set three gender equality targets and demonstrate progress against them over a three-year period. This moves Australian regulation beyond disclosure into mandated outcome improvement.

United States, No Federal Mandate, But State Requirements Expanding

There is currently no federal gender pay gap reporting mandate in the US. However, the EEOC requires annual EEO-1 Component 1 data (workforce composition by race, ethnicity, and gender) from employers with 100 or more employees. The EEOC has proposed expanded pay data collection (Component 2) that was previously collected and then suspended.

At state level, nearly half of US workers are now covered under pay transparency laws, including California, New York, Colorado, Washington, and Illinois. Several of these states are moving toward pay gap reporting requirements alongside salary range disclosure mandates. Illinois and New York have both introduced pay equity reporting proposals that HR teams should be monitoring.

What the EU Directive Actually Requires You to Report

The EU Directive's pay gap reporting requirements are more granular than the UK regime. Understanding exactly what must be calculated and disclosed is essential for building the right data collection infrastructure.

Required DisclosureDefinitionApplies To
Mean pay gapDifference in average pay between women and menAll in-scope employers
Median pay gapDifference in midpoint pay between women and menAll in-scope employers
Mean complementary pay gapGap in variable and complementary componentsAll in-scope employers
Median complementary pay gapMidpoint gap in variable and complementary componentsAll in-scope employers
Proportion receiving variable payShare of women and men receiving variable payAll in-scope employers
Gap by worker categoryPay gap broken down by category of workerAll in-scope employers

Source: EU Pay Transparency Directive 2023/970 Article 9; Ravio EU Pay Transparency Directive Complete Guide; Employsome EU Directive Guide March 2026.

The Worker Category Problem
The EU Directive requires pay gaps to be reported by categories of workers performing equal work or work of equal value, not just by job title. This means employers must first define their worker categories using objective, gender-neutral criteria (typically role families and levels), and then calculate pay gaps within each category. Companies without a documented job architecture and pay band structure cannot do this calculation in a meaningful or defensible way.

The 5% Trigger and the Joint Pay Assessment

The most operationally demanding element of the EU Directive is the joint pay assessment, triggered when a pay gap cannot be explained. Specifically, a joint pay assessment is mandatory where all three of the following conditions are met:

  • The employer has submitted a gender pay gap report
  • The report shows a gap of 5% or more in any worker category
  • The employer cannot justify the gap based on objective, gender-neutral factors within six months of the report

A joint pay assessment must include the methodology used for pay determination, the pay levels by worker category broken down by gender, and a concrete action plan for closing the unjustified gap. The assessment is conducted jointly with worker representatives or works councils.

This is not optional once triggered. The burden of proof sits with the employer to demonstrate that any gap is justified, not with employees or regulators to prove it is not. For companies without documented pay bands, job architecture, and a clear pay philosophy, justifying a gap at the category level will be extremely difficult.

Gap LevelWhat It MeansRequired Action
Under 5%Gap within an accepted category is not flaggedStandard reporting only
5% or moreGap in a worker category not justified by objective factorsEmployer must justify or act
Unjustified and unresolvedGap persists without objective explanationJoint pay assessment triggered
Joint pay assessmentAssessment carried out with worker representativesIdentify, explain, and remedy the gap

How to Calculate the Gender Pay Gap Correctly

The methodology for calculating the gender pay gap sounds simple but contains several decisions that significantly affect the output. Getting these decisions wrong, or making them inconsistently, produces numbers that are either inaccurate or not comparable over time.

Step 1: Define the population

Determine which employees are in scope. The UK regime uses a specific snapshot date (April 5) and includes all UK employees on that date. The EU Directive uses the previous calendar year. Temporary, part-time, and variable-hours workers must be included in most regimes, check your specific jurisdiction's rules on inclusion.

Step 2: Define pay

The definition of pay varies by regime. The UK regime uses ordinary pay, basic pay plus allowances, shift premium pay, piecework pay, for the quartile and mean/median calculations. Bonus pay is calculated separately. The EU Directive uses ordinary basic wage or salary separately from complementary or variable components. Getting the pay definition wrong is one of the most common calculation errors.

Step 3: Hourly rate normalisation

To compare men and women fairly across different working patterns, pay must be expressed as an hourly rate. Full-time and part-time employees must be on a consistent hourly basis before any gap calculation is meaningful. Failing to normalise for working hours is the most common reason pay gap figures are challenged.

Step 4: Calculate mean and median

The mean pay gap is calculated as: (Mean male hourly pay − Mean female hourly pay) ÷ Mean male hourly pay × 100. The median pay gap uses the median hourly pay for each group in the same formula. Median is generally considered the more robust measure because it is less influenced by outliers, very high or very low earners at either end of the distribution.

Step 5: Calculate quartile distributions

For the UK regime, rank all employees by hourly pay from lowest to highest, divide into four equal quartiles, and calculate the percentage of men and women in each quartile. A large gap in the upper quartile, few women at the top, tells a different story than a large mean gap caused by different part-time work patterns.

Step 6: Calculate the adjusted gap

The adjusted gap controls for objective factors including role, level, tenure, location, and performance. This is the number that tells you whether you have a pay discrimination problem versus a representation problem. It requires a statistical model, typically a regression analysis, that is beyond a basic spreadsheet. Most organisations use specialist pay equity software or commission analysis from a compensation consultant or actuary.

Why the Numbers Do Not Explain Themselves, The Narrative Gap

One of the most important things to understand about gender pay gap reporting is that the numbers do not tell the complete story. An organisation with entirely non-discriminatory pay practices can still show a significant gender pay gap if it has a high proportion of women in junior roles and a high proportion of men in senior roles.

This is why the narrative alongside the numbers matters as much as the numbers themselves. The statutory obligation is to publish the figures. The commercial and reputational obligation is to explain what they mean.

A well-constructed narrative covers: why the gap exists (structural, not discriminatory), what the organisation is doing about the representation issues driving it, what progress has been made year-on-year, and what specific commitments the organisation is making for the next reporting period.

A poorly constructed narrative can actually create legal risk. Casual admissions in the narrative, using language that implies discrimination when the actual issue is structural representation, or making commitments that are inconsistent with the pay data, have been used against organisations in subsequent equal pay litigation.

Get Legal Review on the Narrative
Before publishing your gender pay gap report, particularly the narrative and any action plan, have it reviewed by an employment lawyer. The numbers are formulaic and relatively hard to misstate. The words are where the risk lives.

What Happens If You Do Not Report

JurisdictionNon-Compliance ConsequenceEnforcement Body
European UnionPenalties set by each member state, plus burden of proof shifting to the employerNational equality bodies
United KingdomEnforcement action and reputational exposure for missed reportingEquality and Human Rights Commission
AustraliaNamed as non-compliant and ineligible for government contractsWorkplace Gender Equality Agency
United StatesState-level penalties where disclosure laws applyState labor agencies

Across every jurisdiction, the consequences of non-reporting go beyond the regulatory penalty. Late or missing reports are publicly visible. Candidates check. Investors ask. Procurement teams score. The reputational cost of non-compliance, particularly in competitive talent markets, typically exceeds the cost of compliance by a significant margin.

How to Prepare: 7 Steps to Report-Ready Pay Equity Infrastructure

Step 1: Build your job architecture

Before you can report a gender pay gap by worker category, you need defensible worker categories. This requires mapping every role in the organisation to a level, grouping comparable roles into job families, and ensuring those categories are defined using objective, gender-neutral criteria. This is the single most important foundation step, everything else builds on it.

Step 2: Build and validate pay bands

Once job architecture exists, every level in every job family needs a pay band, a minimum, midpoint, and maximum tied to market benchmark data. Pay bands are what make salary decisions documentable and justifiable. They are also what make the adjusted pay gap analysis possible: you can only assess whether someone is paid fairly for their role and level if that role and level has a defined pay range.

Step 3: Audit your data quality

Gender pay gap calculations are only as accurate as the underlying data. Before running any analysis, audit your employee data for completeness and consistency. Check that every employee record has: gender, employment status (full-time or part-time), working hours, base pay, variable pay received, and job level. Missing or inconsistent data in any of these fields will produce a gap figure that is either inaccurate or not reproducible in subsequent audits.

Step 4: Run the analysis before the deadline, not at it

The single most important thing any organisation can do to prepare for gender pay gap reporting is to run the analysis now, with 2026 data as it currently stands, rather than waiting until close to the reporting deadline. Running a preliminary analysis now tells you: what your current gap is, whether you have categories with gaps above 5%, whether those gaps are likely to be justifiable, and how much time you have to address anything that is not.

Step 5: Address unjustifiable gaps before the report is due

If your preliminary analysis reveals unjustifiable pay gaps, gaps that are not explained by role, level, tenure, performance, or geography, the time to address them is now, not in the report. Every merit cycle that runs without addressing known gaps compounds them. Closing a gap in 2026 before the first report is due in 2027 is far less operationally complex than explaining in a published report why a gap exceeds 5% and what the action plan is.

Step 6: Train managers on compensation conversations

When employees see a published gender pay gap report, and they will, they will ask questions. They will ask their manager. Only 52% of organisations train managers on compensation conversations. The other 48% are sending managers into these conversations without the knowledge to answer them accurately, which creates more confusion and distrust than the report itself.

Step 7: Build a data collection process that runs continuously

The first year of gender pay gap reporting is the hardest because it typically involves a one-time data reconstruction exercise. The second year is easier if, and only if, you have built a process that collects the right data continuously throughout the year rather than reconstructing it annually. The right data includes: pay changes with effective dates, new hire salary with job level, promotion records with before/after pay, and variable pay amounts with gender linked.

Frequently Asked Questions

Q1. Is the gender pay gap the same as unequal pay?

No. Unequal pay is paying men and women differently for the same job, which is illegal in most jurisdictions. The gender pay gap is a statistical measure of the average difference in pay between all men and all women across an organisation. A company can have a significant gender pay gap with entirely non-discriminatory pay practices, if women are concentrated in lower-paid roles and men in higher-paid ones. The gap is a symptom of structural representation issues as much as direct pay discrimination.

Q2. Who must comply with the EU Pay Transparency Directive's reporting requirements?

Employers with 150 or more employees in EU member states must submit their first gender pay gap reports by June 7, 2027 using 2026 data. This applies based on where employees are located, not where the employer is headquartered. A US or UK company with 200 employees across Germany and France must comply. Employers with 100 to 149 employees must first report by June 7, 2031. Member states may extend reporting obligations to smaller employers.

Q3. What triggers a joint pay assessment under the EU Directive?

A joint pay assessment is triggered when three conditions are all true simultaneously: the employer has submitted a pay gap report, the report shows a gap of 5% or more in any worker category, and the employer cannot justify the gap based on objective, gender-neutral factors within six months of the report. The assessment must be conducted with worker representatives and must include a concrete action plan for closing the gap.

Q4. What is the difference between the mean and median gender pay gap?

The mean gender pay gap is the difference between the average hourly pay of all men and all women. It is sensitive to outliers, a small number of very highly paid men or very low-paid women can significantly inflate the mean gap. The median gender pay gap is the difference between the midpoint hourly pay of men and women, the figure that half of each group earns more than and half earns less than. Median is generally considered the more robust and representative measure.

Q5. What should a gender pay gap narrative include?

A well-constructed narrative explains why the gap exists, typically a structural representation issue rather than direct pay discrimination, what the organisation is doing to address the underlying causes, what progress has been made since the last report, and what specific commitments exist for the next period. It should be reviewed by an employment lawyer before publication. Language that inadvertently admits pay discrimination when the issue is actually structural can create significant legal exposure.

Q6. How do you close a gender pay gap?

The gap is typically closed through a combination of three approaches. The first is pay equity remediation, identifying and correcting pay that is unjustifiably below the band midpoint for women relative to comparable men. The second is representation change, increasing the proportion of women in senior roles through promotion, succession planning, and targeted hiring. The third is pay structure change, ensuring that the roles where women are overrepresented are valued and paid appropriately relative to comparable roles where men are overrepresented. The first is typically faster. The second and third require sustained multi-year commitment.

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Sources & References

1. EU Pay Transparency Directive 2023/970. European Parliament and Council. Official Journal L 132/21 of 17.05.2023.

2. Sequoia. EU Pay Transparency Directive: February 2026 Update. sequoia.com

3. Ravio. Everything You Need to Know About the EU Pay Transparency Directive. March 2026. ravio.com

4. Employsome. EU Pay Transparency Directive 2026: Guide for Employers. March 2026. employsome.com

5. Safeguard Global. EU Pay Transparency Directive 2026: What Employers Must Know. December 2025.

6. Trusaic. EU Pay Transparency Directive Guide. January 2026. trusaic.com

7. DavidsonMorris. Gender Pay Gap Reporting 2026: Requirements and How to Comply. January 2026. davidsonmorris.com

8. DLA Piper GENIE. Gender Pay Transparency , Global Overview. knowledge.dlapiper.com

9. Sysarb. United Kingdom, Gender Pay Transparency Obligations. sysarb.com

10. Workplace Gender Equality Agency (WGEA). Australia Gender Pay Gap Report 2024-25. wgea.gov.au

11. Eurostat. Gender Pay Gap Statistics 2026. ec.europa.eu/eurostat

12. Salary.com. 2026 State of Pay and Compensation Practices Report. 525 organisations.

13. Payscale. 2026 Compensation Best Practices Report. payscale.com

14. Paylocity. 2026 Workforce Trends Survey. paylocity.com

Disclaimer: This guide is for informational purposes only and does not constitute legal advice. Gender pay gap reporting requirements vary by jurisdiction and are subject to change. Consult qualified legal and HR professionals for advice specific to your organisation.