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Phillips Curve โ€” Smart Financial Analysis

Model the inverse relationship between unemployment and inflation. ฯ€ = ฯ€e โˆ’ ฮฒ(u โˆ’ u*) + supply shock.

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Phillips Curve
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The Phillips Curve shows the inverse relationship between unemployment and inflation. The Non-Accelerating Inflation Rate of Unemployment is the unemployment level where inflation remains stable. The short-run Phillips Curve remains useful for policy analysis, but the long-run relationship has weakened since the 1970s stagflation. The slope (ฮฒ) measures how much inflation changes per 1% change in unemployment.

Key figures
Core Concept
Phillips Curve
Macroeconomics fundamental
Benchmark
Industry Standard
Compare your results
Proven Math
Formula Basis
Established methodology
Expert Verified
Best Practice
Professional standard

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Why: The Phillips Curve shows the inverse relationship between unemployment and inflation. When unemployment falls, inflation tends to rise, and vice versa. Named after economist A.W...

How: Enter Current Unemployment (%), Expected Inflation (%), Natural Unemployment / NAIRU (%) to get instant results. Try the preset examples to see how different scenarios affect the outcome, then adjust to match your situation.

The Phillips Curve shows the inverse relationship between unemployment and inflation.The Non-Accelerating Inflation Rate of Unemployment is the unemployment level where inflation remains stable.

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Calculate Phillips CurveEnter your values below

๐Ÿ“‹ Quick Examples โ€” Click to Load

Current unemployment rate
%
Market expectations of future inflation
%
Non-accelerating inflation rate of unemployment
%
Sensitivity of inflation to unemployment gap
External price shocks (oil, pandemic, etc.)
%
phillips_curve_analysis.shCALCULATED
Inflation
2.25%
Unemployment Gap
0.50%
Status
Above NAIRU (Deflationary)

๐Ÿ“ˆ Phillips Curve Tradeoff (Line)

Inflation vs unemployment (2โ€“12%)

๐Ÿ“Š Inflation at Different Unemployment Levels

Bar chart comparison

๐Ÿฉ Inflation Components (Doughnut)

Expected inflation, unemployment gap effect, supply shock

๐Ÿ“Š Current vs Historical US Data

Inflation and unemployment comparison

For educational purposes only โ€” not financial advice. Consult a qualified advisor before making decisions.

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The Phillips Curve, first described by A.W. Phillips in 1958, remains one of the most influential concepts in macroeconomics. It illustrates the short-run tradeoff between unemployment and inflation that central banks must navigate. The Federal Reserve explicitly considers this relationship when setting monetary policy, targeting 2% inflation while pursuing maximum employment.

1958
Year Phillips published his research
4-5%
Estimated US NAIRU
2%
Fed's inflation target
0.3-0.7
Typical US slope coefficient

Sources: Federal Reserve Economic Data (FRED), Bureau of Labor Statistics, IMF World Economic Outlook, Phillips (1958) Economica.

Key Takeaways

  • โ€ข ฯ€ = ฯ€e โˆ’ ฮฒ(u โˆ’ u*) + supply shock
  • โ€ข Below NAIRU โ†’ inflation accelerates; above โ†’ deflationary pressure
  • โ€ข Slope ฮฒ typically 0.3โ€“0.7 for the US
  • โ€ข Fed uses this tradeoff for interest rate decisions

Did You Know?

๐Ÿ”ข Phillips analyzed UK wage data 1861โ€“1957
๐Ÿ“Š 1970s stagflation challenged the original curve
๐Ÿ’ก Modern versions include inflation expectations
๐ŸŒ NAIRU varies by country (US ~4.5%, Eurozone ~7%)
๐Ÿ“ˆ Post-pandemic curve may have steepened
๐ŸŽฏ Fed targets 2% inflation with dual mandate

How Does the Phillips Curve Work?

Formula

ฯ€ = ฯ€e โˆ’ ฮฒ(u โˆ’ u*) + supply shock. When u > u*, inflation falls below expected; when u < u*, inflation rises.

NAIRU

At u = u*, inflation equals expected inflation (plus any supply shock). This is the "natural" rate where inflation is stable.

Supply Shocks

Oil crises, pandemics, or supply chain disruptions shift the curve. Positive shock raises inflation at any unemployment level.

Expert Tips

Use NAIRU estimates from CBO or Fed (typically 4โ€“5% for US) for policy analysis.
Slope ฮฒ has flattened over time; use 0.3โ€“0.5 for recent US data.
Account for supply shocks (oil, pandemic) when interpreting inflation surprises.
Short-run tradeoff holds; long-run Phillips Curve is vertical at NAIRU.

Economic Regime Comparison

Regimeu vs u*Inflation
Below NAIRUu < u*Rising
At NAIRUu = u*Stable
Above NAIRUu > u*Falling

Frequently Asked Questions

What is the Phillips Curve?

The Phillips Curve shows the inverse relationship between unemployment and inflation. When unemployment falls, inflation tends to rise, and vice versa. Named after economist A.W. Phillips (1958).

What is NAIRU?

The Non-Accelerating Inflation Rate of Unemployment is the unemployment level where inflation remains stable. Currently estimated at 4-5% for the US. Below NAIRU, inflation accelerates.

Is the Phillips Curve still relevant?

The short-run Phillips Curve remains useful for policy analysis, but the long-run relationship has weakened since the 1970s stagflation. Modern versions include expectations and supply shocks.

What is the slope coefficient?

The slope (ฮฒ) measures how much inflation changes per 1% change in unemployment. Historically 0.3-0.7 for the US. A steeper slope means inflation is more sensitive to unemployment changes.

What are supply shocks?

External events (oil crises, pandemics) that shift the Phillips Curve. Positive supply shocks reduce inflation at any unemployment level; negative shocks increase it (stagflation).

How does the Fed use the Phillips Curve?

The Fed monitors the unemployment-inflation tradeoff to set interest rates. When unemployment falls below NAIRU, they may raise rates preemptively to prevent inflation from accelerating.

Key Statistics

1958
Phillips paper published
4.5%
US NAIRU estimate
2%
Fed inflation target
0.5
Typical slope ฮฒ

Official Data Sources

โš ๏ธ Disclaimer: This calculator is for educational purposes only. NAIRU and slope estimates vary. Not financial or policy advice.

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