Key Takeaways
- Annual average wage used for Social Security indexing.
- Adjusts past earnings for inflation and wage growth.
- Crucial for calculating retirement and disability benefits.
What is National Average Wage Index (NAWI)?
The National Average Wage Index (NAWI) is an annual measure calculated by the U.S. Social Security Administration reflecting the average wages subject to Social Security taxes for all U.S. workers in a calendar year. It is primarily used to adjust your past earnings for inflation when determining Social Security benefits such as retirement, disability, and survivors benefits.
This index ensures that your historical earnings are fairly inflated to current wage levels, capturing economic growth and wage inflation trends over time.
Key Characteristics
NAWI has several important features that distinguish it from other wage or income measures:
- Derived from Social Security data: Uses taxable wages reported on W-2 forms, excluding non-taxable income.
- Annual update: The index is recalculated yearly based on the prior year's value and current wage data.
- Inflation adjustment tool: Adjusts historical earnings to reflect changes in the labor market and wage growth.
- Benefit calculation basis: Integral to computing Average Indexed Monthly Earnings (AIME) for Social Security benefits.
- Distinct from other averages: Unlike general national wage averages, NAWI focuses solely on Social Security-covered wages.
How It Works
NAWI is computed by multiplying the previous year's index by the ratio of average wages in the current year to those in the previous year, creating a continuous indexed series. This allows you to convert past wages into inflation-adjusted figures for benefit calculations.
When calculating your retirement or disability benefits, each year's earnings before eligibility are multiplied by the ratio of the NAWI in the eligibility year to the NAWI in the earnings year. Earnings during or after the eligibility year are not adjusted. The highest 35 years of these indexed earnings are averaged monthly to calculate your benefit base.
Examples and Use Cases
NAWI plays a critical role in Social Security and broader financial contexts:
- Airlines: Companies like Delta adjust their employee wage data and benefits accounting in line with economic trends reflected by indices similar to NAWI.
- Benefit planning: When you retire at age 62, your earnings from previous years are indexed using NAWI to ensure your OASDI benefits fairly reflect wage growth.
- Investment strategies: Understanding wage indexing helps you evaluate retirement income alongside options like the best low-cost index funds for long-term growth.
Important Considerations
While NAWI is essential for benefit calculations, it only covers wages subject to Social Security taxes and excludes certain income types like some self-employment earnings. The index values are finalized about a year after the calendar year, which may affect timing in benefit estimates.
For practical financial planning, you should consider how NAWI adjustments interact with other retirement factors, including your labor market dynamics and investment choices, to optimize your income strategy.
Final Words
The National Average Wage Index adjusts past earnings to reflect current wage levels, ensuring fair Social Security benefit calculations. Review your earnings records and consider how indexing may impact your future benefits when planning retirement.
Frequently Asked Questions
The NAWI is an annual statistic calculated by the U.S. Social Security Administration that represents the average of total wages subject to Social Security taxes for all U.S. workers in a given year. It is primarily used to adjust past earnings for inflation when computing Social Security benefits.
NAWI is calculated by multiplying the prior year's index by the ratio of average wages in the current year to the prior year, based on Social Security wage data. This creates a continuous series reflecting wage growth and inflation over time.
NAWI ensures fairness by adjusting workers' historical earnings to current wage levels, accounting for inflation and economic growth. This indexing is crucial for accurately calculating retirement, survivors, and disability benefits.
When you become eligible for benefits, your past earnings are indexed using NAWI to reflect current wage levels. This indexed amount helps determine your Average Indexed Monthly Earnings, which directly impacts the amount of your monthly Social Security benefit.
No, the NAWI differs from the national average salary because it only includes wages subject to Social Security taxes and excludes non-taxable income. It focuses specifically on covered earnings reported to the SSA.
The Social Security Administration publishes the full series of NAWI values annually, covering years from 1951 through the current year. These values are available for precise benefit calculations and research.
Yes, NAWI is also used to index various program elements such as contribution bases, bend points in benefit formulas, and premium rates set by the Pension Benefit Guaranty Corporation.


