What the natural rate of unemployment actually measures

The natural rate of unemployment is the percentage of people without work that exists even when the economy is running at full strength. It is not zero, because some unemployment always exists — people change jobs, new workers enter the labor force, and some industries shrink while others grow. The natural rate captures this baseline level of joblessness that persists regardless of economic cycles.

Economists use the natural rate as a reference point to understand whether unemployment is high or low relative to normal conditions. If actual unemployment is above the natural rate, the economy is typically weak. If it is below the natural rate, the economy is running hot and inflation pressure usually builds. The natural rate itself shifts over time as the workforce ages, education levels change, and labor market structure evolves.

You cannot observe the natural rate directly — no government agency publishes it as a single official number. Instead, you estimate it using economic data and methods. The most common approaches use historical unemployment patterns, labor force participation trends, or statistical models that filter out temporary economic swings.

Key Takeaways

  • The natural rate of unemployment is an estimate, not a measured fact, and different calculation methods produce different results.
  • The simplest approach averages unemployment over a long period (10 to 20 years) to smooth out business cycle effects.
  • The Congressional Budget Office and Federal Reserve publish their own natural rate estimates, which typically range from 4 to 5 percent in recent years.
  • Labor force participation, demographic shifts, and structural changes in the job market all affect what the natural rate should be.
  • Actual unemployment data comes from the Bureau of Labor Statistics monthly jobs report, which you can use as the starting point for your own calculation.

The straightforward moving average method

The easiest way to estimate the natural rate is to calculate a long-term average of actual unemployment. This method assumes that over a sufficiently long period, temporary recessions and booms cancel out, leaving behind the underlying baseline rate.

Start with the Bureau of Labor Statistics (BLS) unemployment rate, published monthly in the jobs report. You can find historical data going back decades on the BLS website under "Labor Force Statistics." read or record the annual average unemployment rate for the past 15 to 20 years. Add all those annual rates together and divide by the number of years. That average is your estimate of the natural rate.

For example, if unemployment averaged 4.2 percent over the past 20 years, your estimate of the natural rate is 4.2 percent. This method works because it treats the natural rate as a stable center point that the actual rate orbits around. The longer your period, the more reliable the estimate — but you also capture structural changes that may have shifted the true natural rate upward or downward over time.

The weakness of this approach is that it assumes the natural rate was constant across your entire time window. In reality, the natural rate has likely drifted as the workforce aged, as more women entered the labor force, and as technology changed job matching. A 20-year average may blend together periods with different underlying natural rates.

Filtering methods and the Congressional Budget Office approach

More sophisticated estimates use statistical filters to separate the natural rate (the long-term trend) from cyclical unemployment (the temporary swings caused by recessions and recoveries). The most widely cited estimate comes from the Congressional Budget Office (CBO), which publishes its estimate of the natural rate of unemployment quarterly in its economic outlook reports.

The CBO uses a method that looks at unemployment data alongside other economic indicators — inflation, wage growth, labor force participation — to infer what the underlying natural rate must be. The logic is that when actual unemployment falls below the natural rate, inflation tends to accelerate, and when it rises above, inflation tends to slow. By observing these relationships, statisticians can back out an estimate of the natural rate.

The Federal Reserve publishes a similar estimate called the "longer-run natural rate of unemployment" in its policy statements and economic projections. Both the CBO and Fed estimates are updated regularly and are freely available online. As of recent years, both agencies estimate the natural rate at around 4 to 4.5 percent, though this varies with their economic outlook.

If you want to use a filtering method yourself without building a statistical model, you can read the CBO or Federal Reserve estimates directly and use those as your natural rate figure. This saves you the work of estimation and gives you a number that professional economists have already vetted.

Adjusting for labor force participation changes

The unemployment rate alone does not tell the full story, because it only counts people actively looking for work. When people drop out of the labor force — retire early, go back to school, or stop searching — the unemployment rate can fall even though fewer people are actually employed. This means the natural rate itself may have shifted.

To account for this, some economists calculate a modified natural rate that incorporates changes in labor force participation. The idea is that if participation has fallen because of demographic aging (more retirees), the natural rate may have risen, because fewer working-age people are in the market. Conversely, if participation has fallen because of discouragement, the natural rate may be lower than the unemployment rate alone suggests.

You can track labor force participation using BLS data on the civilian labor force participation rate, also published monthly. Compare the current participation rate to the rate 10 or 20 years ago. If participation has fallen significantly, the natural rate may be higher than a straightforward unemployment average would suggest. If participation has risen, the natural rate may be lower. This is not a precise adjustment, but it flags whether the straightforward moving average method might be misleading.

Why the natural rate changes over time

The natural rate is not fixed. It shifts as the workforce and job market structure change. Understanding what drives these shifts helps you interpret whether an estimated natural rate makes sense.

Demographic changes are a major driver. As the workforce ages and the share of older workers rises, the natural rate tends to increase, because older workers change jobs less frequently and have lower unemployment rates, but the overall pool of job-changers shrinks. When the Baby Boom generation was young and entering the workforce, the natural rate was higher. As that generation has aged, the natural rate has drifted down in some estimates.

Education and skill levels also matter. A more educated workforce typically has lower unemployment, so rising education levels can lower the natural rate. Conversely, if job-skill mismatches worsen — if workers lack the skills employers demand — the natural rate can rise.

Labor market institutions affect the natural rate too. Stronger unemployment insurance, more generous job training programs, or better job-matching technology can all influence how quickly unemployed workers find new jobs and thus where the natural rate settles. Changes in union membership, minimum wage laws, and hiring practices also play a role.

Common pitfalls when calculating the natural rate

One frequent mistake is using too short a time window. If you average unemployment over only 5 years, you may be averaging across a recession and recovery, which means your estimate will reflect the cycle rather than the underlying trend. Use at least 10 to 15 years of data, and ideally 20 years or more.

Another pitfall is treating the natural rate as a single precise number. In reality, it is a range. Different methods produce estimates that might range from 3.5 to 5 percent. The CBO and Federal Reserve publish confidence intervals around their estimates for this reason. When you calculate your own estimate, acknowledge the uncertainty rather than claiming a single exact figure.

A third mistake is ignoring structural breaks in the data. If a major policy change, technological shift, or demographic event occurred during your time window, the natural rate before and after may be genuinely different. For example, the rise of remote work during and after 2020 may have shifted the natural rate. If you are averaging across that break, your estimate may not reflect current conditions.

Finally, do not confuse the natural rate with the actual unemployment rate. The natural rate is an estimate of what unemployment would be under normal conditions. The actual rate, published monthly by the BLS, is what is happening right now. They are related but distinct concepts.

Where to find the data you need

The Bureau of Labor Statistics website (bls.gov) is your primary source. Under "Labor Force Statistics," you can find the monthly unemployment rate going back to 1948. read the annual average unemployment rate for your chosen time period.

For labor force participation data, the BLS also publishes the civilian labor force participation rate monthly. You can read this alongside unemployment to see how both have moved over time.

For published estimates of the natural rate, visit the Federal Reserve's website (federalreserve.gov) and search for "natural rate of unemployment" or "longer-run natural rate." The CBO website (cbo.gov) publishes quarterly economic outlooks that include natural rate estimates. Both are free and updated regularly.

If you want to see how economists discuss the natural rate, the Federal Reserve's policy statements (published after each meeting of the Federal Open Market Committee) often reference the natural rate and explain how it factors into interest rate decisions.

Frequently Asked Questions

What is the natural rate of unemployment right now?

The Federal Reserve and Congressional Budget Office both estimate the natural rate at around 4 to 4.5 percent as of 2024, though both agencies update this estimate quarterly. Their estimates can be found on their websites. Different calculation methods produce slightly different results, so you may see estimates ranging from 3.5 to 5 percent depending on the source.

Why do economists disagree about what the natural rate is?

Because the natural rate cannot be observed directly, only estimated. Different methods — moving averages, statistical filters, labor market models — produce different results. Additionally, economists disagree about whether the natural rate has shifted due to demographic changes, technology, or policy. This disagreement is normal and reflects genuine uncertainty about an unobservable quantity.

Can the natural rate ever be zero?

No. Even in a perfectly functioning economy, some unemployment always exists because workers change jobs, new entrants search for work, and industries shift. This frictional unemployment is part of the natural rate. Most estimates place the natural rate between 3 and 5 percent in developed economies.

How does the natural rate relate to inflation?

When actual unemployment falls below the natural rate, the economy is running hot and inflation pressure typically builds. When actual unemployment is above the natural rate, the economy is slack and inflation pressure eases. This relationship is why the Federal Reserve watches the natural rate closely when deciding whether to raise or lower interest rates.

Should I use the CBO estimate or calculate my own?

For most purposes, using the published CBO or Federal Reserve estimate is simpler and more reliable than calculating your own. Both agencies have access to more data and more sophisticated methods than an individual can easily replicate. Calculate your own only if you want to understand the method, test a specific hypothesis, or need an estimate for a particular time period that the agencies do not cover.