The OECD Taxing Wages 2026 report utilizes several core indicators to compare the tax and benefit positions of employees and the associated labor costs for employers across the 38 OECD member countries. These indicators are essential for understanding how personal income taxes, social security contributions (SSCs), and cash benefits affect household disposable income and work incentives.
1. The Tax Wedge (Average and Marginal)
The tax wedge is the report’s primary indicator for measuring the overall tax burden on labor.
- Average Tax Wedge: This measures the difference between the total labor costs to the employer and the corresponding net take-home pay of the employee. It is calculated by expressing the sum of personal income tax, employee and employer SSCs, and payroll taxes—minus any cash benefits—as a percentage of total labor costs.
- Marginal Tax Wedge: This measures the portion of an increase in total labor costs that is paid in taxes and SSCs, less cash benefits. It highlights the "tax bite" on an extra unit of income, which is a critical factor in labor supply decisions.
2. Personal Average Tax Rates
Unlike the tax wedge, these indicators focus solely on the burden faced by the employee, excluding employer-paid contributions.
- Gross Personal Average Tax Rate: This expresses personal income tax and employee SSCs as a percentage of gross wage earnings.
- Net Personal Average Tax Rate: This corresponds to the gross measure but subtracts cash benefits (such as child-related transfers) from the tax liability. This indicator is particularly useful for showing the actual disposable income available to families.
3. Net Personal Marginal Tax Rate
This indicator shows the part of an increase in gross wage earnings that is paid in personal income tax and employee SSCs, net of cash benefits. It is often higher than average rates in systems where income-tested benefits are phased out as earnings rise, as the loss of a benefit compounds the increase in tax payable.
4. Tax Elasticity
The report examines the elasticity of after-tax income, which measures the percentage increase in net income relative to the percentage increase in gross wages or labor costs.
- An elasticity of 1.0 indicates a proportional tax system.
- An elasticity below 1.0 indicates a progressive system (where tax rates rise faster than income).
- An elasticity above 1.0 indicates a regressive system.
5. Statutory Progressivity Indicator
A central feature of the 2026 report is the analysis of statutory progressivity, which builds on an indicator first introduced in 2013. It measures the change in the average tax wedge for each percentage point increase in income (expressed as a multiple of the average wage) over a specific range, such as 50% to 500% of the average wage.
Larger Context: 2025-2026 Trends
In the context of the 2026 report (which primarily analyzes data from 2025), these indicators reveal several key trends:
- Rising Tax Burdens: Average tax wedges for single workers earning the average wage rose in 24 OECD countries in 2025, driven largely by fiscal drag (where inflation pushes earners into higher brackets) and increases in social security contribution rates.
- Household Composition Matters: Tax systems remain most progressive for households with children and those at lower earnings levels due to the concentrated impact of fixed tax reliefs and means-tested cash transfers.
- Historical Highs: For most household types, the OECD average tax wedge in 2025 reached its highest level since before the COVID-19 pandemic.
The 2025 key findings, as detailed in the Taxing Wages 2026 report, center on a continued rise in the tax burden on labor across most OECD countries, with particularly notable impacts on households with children. These findings reflect the first time since the phase-out of COVID-19 support measures in 2022 that average effective tax rates increased for all eight household types analyzed.
1. Rising Tax Wedge for Single Workers
The average tax wedge—the total taxes on labor paid by both employees and employers, minus benefits, as a percentage of total labor costs—for a single worker earning the average wage rose to 35.1% in 2025.
- Widespread Increases: The tax wedge for this group increased in 24 OECD countries, fell in 11, and remained unchanged in three.
- Highest Levels: This average of 35.1% represents the highest level since 2016.
- Regional Variation: The largest tax wedges were observed in Belgium (52.5%), Germany (49.3%), France (47.2%), and Austria (47.1%), while the lowest were in Chile (7.5%) and Colombia (0.0%).
2. Concentration of Increases in Households with Children
A significant finding for 2025 is that tax burdens for households with children increased more sharply than for single workers, reducing the "fiscal advantage" typically enjoyed by families.
- One-Earner Couples: The average tax wedge for a one-earner couple with two children rose by 0.46 percentage points to 26.2%.
- Single Parents: The largest increase across all eight household types was for a single parent earning 67% of the average wage, whose tax wedge rose by 0.52 percentage points to 16.3%.
- Narrowing Gap: The difference between the tax wedge of a single worker and a one-earner couple with children narrowed by 0.31 percentage points in 2025, following a similar narrowing in 2024.
3. Post-Pandemic Context and Historical Trends
The report places these findings in a broader chronological context, noting that the OECD average tax wedge for most household types is now at its highest level since before the COVID-19 pandemic (specifically, since at least 2018). However, when looking at a 25-year horizon, the 2025 tax wedge remains below the levels seen in 2000.
4. Drivers of Change: Fiscal Drag and Policy
The findings identify several key drivers for the rising tax burdens:
- Fiscal Drag: This was a primary cause in many countries, where inflation pushes earners into higher tax brackets because tax thresholds or credits are not adjusted for inflation.
- Social Security Contributions (SSCs): Increases in SSC rates for both employers and employees (e.g., in the UK, Germany, and Israel) contributed significantly to the higher tax wedges.
- Policy Reforms: Specific reforms, such as Estonia's increase in the personal income tax rate from 20% to 22%, also drove the increases. Conversely, reforms in Australia reduced statutory rates, leading to a decrease in their tax wedge.
5. Wage and Real Income Growth
Despite the rising tax burden, there was positive movement in gross earnings:
- Nominal and Real Growth: Average wages increased in nominal terms across all 38 OECD countries and increased in real terms in 35 countries.
- Post-Tax Real Income: The post-tax income of a single worker earning the average wage increased in 28 countries in real terms during 2025.
The Special Feature in the Taxing Wages 2026 report provides a comprehensive analysis of the statutory progressivity of labor taxation across the 38 OECD member countries. It examines how the tax wedge—the total taxes on labor paid by both employees and employers, minus benefits, as a percentage of total labor costs—varies across different earnings levels and household compositions.
1. Defining and Measuring Progressivity
The OECD defines a labor tax system as progressive if the average tax rates increase as income rises. To quantify this, the report utilizes a statutory progressivity indicator that measures the change in the average tax wedge for every one percentage point increase in gross earnings, relative to the national average wage. This analysis spans an earnings range from 50% to 500% of the average wage, broken down into seven distinct intervals.
2. Key Drivers of Progressivity
The Special Feature explores how different policy instruments contribute to the overall progressivity of a country’s tax system:
- Tax Reliefs and Cash Transfers: These are identified as the strongest drivers of progressivity, particularly at the lower end of the income distribution. Because these benefits are often fixed amounts or means-tested, they represent a much larger share of income for low-earners than for high-earners.
- Personal Income Tax (PIT): Progressive PIT schedules—where higher brackets apply to higher levels of income—consistently contribute to labor tax progressivity. This is the primary factor driving progressivity for households without children.
- Social Security Contributions (SSCs): The impact of SSCs is mixed. While they can be progressive at lower earnings due to specific reliefs for low-wage workers, they often become regressive at higher earnings levels because many countries implement contribution ceilings.
3. Core Findings for 2025
- Concentration at the Bottom: Progressivity is highest in the lowest earnings intervals, specifically between 50% and 67% of the average wage. In 25 OECD countries, the progressivity in this interval is at least three times larger than the average for the entire 50%–500% range.
- Household Impact: Systems are significantly more progressive for households with children. On average, the progressivity indicator for a household with children (0.79) is double that of a single worker (0.39).
- Country Variation: Statutory progressivity varies widely; France displays the highest progressivity indicator, while Hungary (which uses a flat-tax system) shows no progressivity as its tax wedge remain constant across all earnings levels.
4. Long-Term Trends (2000–2025)
The Special Feature finds that labor taxation has generally become more progressive since 2000, especially for families with children.
- The 2014–2019 Peak: The largest increase in statutory progressivity occurred during this period.
- Post-Pandemic Reversal: Between 2019 and 2022, progressivity increased as countries enacted support measures during the COVID-19 pandemic. However, this trend slightly reversed between 2022 and 2025, as many of these temporary measures were phased out.
- Static Top End: On average, the progressivity of the tax wedge for earnings above the average wage has not changed significantly since 2000.
5. Economic Context and Trade-offs
The report notes that concentrated progressivity at lower income levels can create high marginal tax rates for workers whose earnings rise just enough to lose eligibility for means-tested benefits. While these progressive structures support the disposable income of low-earning households, they can also reduce work incentives and impact broader economic variables like job mobility and economic growth.
The Taxing Wages 2026 report centers its analysis on eight specific household types to provide a standardized, cross-country comparison of how tax and benefit systems affect different demographic groups. These types are differentiated by their marital status, the number of children, and their earnings levels, expressed as a percentage of the national average wage (AW).
The Eight Illustrative Household Types
The report utilizes the following eight models to represent a broad range of social and economic circumstances:
- Single individual, no children, earning 67% of the average wage.
- Single individual, no children, earning 100% of the average wage.
- Single individual, no children, earning 167% of the average wage.
- Single parent, two children, earning 67% of the average wage.
- One-earner married couple, two children, with the principal earner at 100% of the average wage.
- Two-earner married couple, two children, with the principal earner at 100% and the spouse at 67% of the average wage.
- Two-earner married couple, two children, with both earners at 100% of the average wage.
- Two-earner married couple, no children, with the principal earner at 100% and the spouse at 67% of the average wage.
Methodological Assumptions
To ensure the data is comparable across all 38 OECD countries, the report makes several key assumptions for these households:
- Children: Any children in these models are assumed to be between the ages of six and eleven inclusive.
- Income Source: The household is assumed to have no other source of income besides employment and relevant cash benefits.
- Employment: All individuals are assumed to be full-time adult employees working in industry sectors B-N (ISIC Rev. 4).
Significance in the 2026 Report
Analyzing these distinct types allows the OECD to highlight how policy changes and economic shifts impact various groups differently. Key findings from the 2026 report (which covers 2025 data) include:
- Universal Increases: For the first time since 2022, the average effective tax rate increased for all eight household types across the OECD.
- Narrowing Fiscal Advantage: The tax wedge for households with children increased more sharply than for single workers. For example, the difference between the tax wedge of a single worker and a one-earner couple with children narrowed by 0.31 percentage points in 2025.
- Single Parent Vulnerability: The largest increase in the average tax wedge across all eight types was for a single parent earning 67% of the average wage, whose burden rose by 0.52 percentage points to 16.3%.
- Historical Highs: For most of these households, the OECD average tax wedge in 2025 reached its highest level since before the COVID-19 pandemic.
The methodology of the Taxing Wages 2026 report is designed to provide a standardized, comparative framework for analyzing the impact of personal income taxes, social security contributions (SSCs), and cash benefits on the disposable incomes of households and the labor costs faced by employers across all 38 OECD member countries. The core objective is to illustrate how these levies are calculated and to allow for meaningful cross-country quantitative comparisons.
Core Framework and Household Modeling
The report utilizes a model-based approach centered on eight specific household types. These models are differentiated by marital status (single vs. married), the number of children (none vs. two), and income levels expressed as a percentage of the national average wage.
- Employment Assumptions: All individuals in the models are assumed to be full-time adult employees who work for the entire year without interruptions for sickness or unemployment.
- Income Source: Households are assumed to have no other source of income except for employment earnings and relevant universal cash benefits from the government.
- Children: Any children in the models are assumed to be between the ages of six and eleven inclusive.
Defining the Average Wage (AW)
A critical methodological component is the Average Wage, which serves as the benchmark for all income calculations.
- Industry Classification: The standard calculation is based on industry sectors B-N as defined by the International Standard Industrial Classification of All Economic Activities (ISIC Revision 4). This includes sectors such as mining, manufacturing, construction, and various service activities.
- 2025 Estimates: Because final wage data for 2025 was not available at the time of writing, the Secretariat derived estimates by applying the country-specific percentage change of wages from the OECD Economic Outlook Volume 2025 Issue 2 to the 2024 wage levels.
Tax and Benefit Components
The report focuses exclusively on taxes and benefits related to labor income.
- Included Taxes: The term "tax" encompasses central, state, and local personal income taxes (PIT), as well as social security contributions paid by both employees and employers. Payroll taxes are also included in the total tax wedge for countries that report them.
- Standard vs. Non-Standard Reliefs: The methodology prioritizes standard tax reliefs, which are fixed amounts or percentages available automatically to all eligible taxpayers (e.g., basic allowances or standard work expense deductions). Non-standard reliefs, which are determined by actual expenses like mortgage interest or charitable donations, are generally excluded to ensure comparability.
- Cash Transfers: Only universal cash transfers paid by the general government in respect of dependent children are included in the primary indicators.
Key Indicators and Indicators of Progressivity
The report derives several quantitative measures from these calculations:
- Tax Wedge: The primary measure, which represents the difference between the total labor costs to the employer and the net take-home pay of the employee, expressed as a percentage of labor costs.
- Personal Average Tax Rate: The sum of PIT and employee SSCs as a percentage of gross wage earnings.
- Statutory Progressivity Indicator: Featured in this edition's Special Feature, this indicator measures the change in the average tax wedge for every one percentage point increase in gross earnings (as a multiple of the average wage) over a specific range, such as 50% to 500% of the AW.
Methodological Limitations
While the report provides high comparability, the sources highlight several limitations:
- Formal vs. Economic Incidence: The results show only the formal incidence of taxes; they do not account for how the actual economic burden might shift between employers and employees due to market adjustments.
- Statutory vs. Actual Distributions: The analysis of progressivity is statutory, meaning it reflects the design of the tax system rather than the actual distribution of income within the working population, for which the report lacks demographic data.
- Excluded Taxes: The report does not take into account indirect taxes (like VAT), corporate taxes, or taxes on capital income, providing only a partial view of the total fiscal impact on households.