Economic Growth

Quick Definition

Economic growth is the sustained increase in an economy's real output of goods and services over time, typically measured as the annual percentage change in real GDP (Gross Domestic Product adjusted for inflation). It is the fundamental driver of rising living standards, poverty reduction, and expanding opportunity across generations.

What It Means

Economic growth means an economy is producing more: more goods, more services, more income per person. Over decades and centuries, even modest compound growth transforms living standards dramatically. The difference between a country growing at 1% annually versus 3% annually seems small year to year. But over 100 years, the 3% economy produces 19 times more output per person while the 1% economy produces only 2.7 times more. Compounding matters enormously.

For investors, economic growth drives corporate earnings growth, which ultimately drives stock market returns. Understanding what drives growth, and what threatens it, is foundational to long-term investment thinking.

Measuring Economic Growth

Economic growth is most commonly measured by real GDP growth, which is GDP adjusted for inflation:

Real GDP Growth = (Real GDP This Year - Real GDP Last Year) / Real GDP Last Year x 100

Where the US Economy Stands in 2026

Multiple forecasts place U.S. real GDP growth in the 2.0% to 2.5% range for 2026:

The Federal Reserve's longer-run projection for real GDP growth sits at 2.0%, reflecting the consensus that U.S. potential growth has settled around that level. The Survey of Professional Forecasters projects 2.1% annual average real GDP growth over the next 10 years, with productivity growth expected at 1.8%, up from 1.6% in the prior survey. The upward revision in productivity expectations reflects growing optimism about AI-driven productivity gains.

Goldman Sachs Research notes that the composition of GDP expansion is shifting. More of the growth is expected to come from productivity gains, which have rebounded and should receive a boost from artificial intelligence. Labor supply growth, with immigration now much lower, will account for less of the economy's expansion than in prior cycles.

The Sources of Economic Growth

Economists identify four primary drivers:

1. Labor Force Growth

More workers produce more output:

• Population growth
• Immigration
• Increased labor force participation (more people entering the workforce)

2. Capital Accumulation

More productive equipment and infrastructure:

• Business investment in machinery, equipment, and technology
• Infrastructure (roads, broadband, energy grid)
• Human capital investment (education, training)

3. Technological Progress (Total Factor Productivity)

Producing more from the same inputs. This is the most powerful long-run growth engine:

• Innovation (new products and processes)
• Efficiency improvements
• Better management practices
• Knowledge diffusion

4. Institutional Quality

The rules of the game that enable growth:

• Property rights and rule of law
• Low corruption
• Political stability
• Free markets and competition
• Financial system development

Growth Accounting: Breaking Down the Sources

Economists use growth accounting to decompose GDP growth:

GDP Growth = Labor Growth + Capital Growth + Technological Progress (TFP)

The slowdown in recent decades primarily reflects slower labor force growth (aging demographics, lower birth rates) and productivity growth stagnation. The AI revolution may re-accelerate productivity growth, which is why forecasters have nudged their long-run productivity expectations upward.

Economic Growth vs. Standard of Living

Economic growth is not the same as human wellbeing, but it correlates strongly with it:

Higher GDP per capita correlates with longer lives, less childhood death, more education, and greater personal freedom. The relationship is not perfect, but it is consistent.

The Rule of 70: Understanding Compounding Growth

A simple approximation for how quickly an economy doubles at a given growth rate:

Years to Double = 70 / Annual Growth Rate

China's sustained 7 to 10% growth from 1980 to 2015 transformed it from a subsistence agricultural economy into the world's second-largest by moving hundreds of millions of people into manufacturing and urban employment.

What Threatens Economic Growth

Economic Growth and Investing

In 2026, the U.S. economy sits in the "moderate growth" scenario at roughly 2.0 to 2.5%. The Federal Reserve has signaled a cautious approach to rate cuts, with inflation running above target. The business cycle remains in expansion territory, though risks from geopolitical conflict and trade policy uncertainty persist.

Key Points to Remember

• Economic growth equals the increase in real GDP, which is inflation-adjusted output
• Driven by four factors: labor, capital, technology (TFP), and institutions
• The Rule of 70: divide 70 by the growth rate to find how many years until the economy doubles
• U.S. long-run growth has slowed from ~4% (1950s to 60s) to ~2% (2020s) primarily due to demographics and productivity trends
• The Federal Reserve projects 2.2% real GDP growth for 2026, with a longer-run potential of 2.0%
• AI-driven productivity gains may push long-run growth slightly higher, with forecasters raising productivity expectations to 1.8%
• For investors, GDP growth drives corporate earnings which drives equity returns over time

Common Mistakes to Avoid

• Confusing nominal GDP with real GDP: Nominal GDP includes inflation. If nominal GDP grows 5% but inflation is 3%, real growth is only 2%. Always use real (inflation-adjusted) GDP when comparing across time periods.
• Assuming growth benefits everyone equally: GDP growth does not measure inequality. Growth can flow disproportionately to high earners while median wages stagnate. The Gini index and median household income data provide a fuller picture.
• Extrapolating short-term growth indefinitely: A 5.9% rebound in 2021 did not mean the U.S. would grow at 5.9% forever. Post-recession recoveries are typically fast, then settle back to trend. The 2.0 to 2.5% range for 2026 is more representative of the sustainable rate.
• Ignoring productivity growth: Labor force growth gets attention, but productivity growth is the dominant long-run driver. Countries with shrinking populations can still grow if productivity rises fast enough. Japan has done this for decades.

Related Concepts

Economic growth connects to many other economic concepts. GDP is the primary measure of economic growth. A recession is a period of negative economic growth. Inflation erodes the real value of growth and must be adjusted for. Fiscal policy (government spending and taxation) and monetary policy (interest rates and money supply) are the two main levers policymakers use to manage growth. The business cycle describes the natural rhythm of expansion and contraction. The Federal Reserve tries to maintain growth near its "potential" rate, the non-inflationary speed limit.

Frequently Asked Questions

Q: Is more economic growth always better? A: From a material welfare standpoint, generally yes. More growth means more resources for health, education, and consumption. However, GDP does not measure inequality, environmental degradation, leisure time, or wellbeing beyond material consumption. Alternatives like the Human Development Index (HDI) or Genuine Progress Indicator (GPI) attempt to supplement GDP with broader measures.

Q: Why has US economic growth slowed since the 1960s? A: Multiple factors: demographic slowdown (baby boomers retiring rather than entering the workforce), productivity growth deceleration (the easy gains from electrification, highways, and computerization have been captured), and secular stagnation (excess savings relative to investment opportunities). The AI revolution may re-accelerate productivity growth. Forecasters have already nudged their long-run productivity expectations upward from 1.6% to 1.8% in the 2026 Survey of Professional Forecasters.

Q: How does economic growth affect inflation? A: Growth and inflation have a complex relationship. Strong growth can be inflationary if demand outstrips supply capacity (demand-pull inflation). But growth driven by productivity improvements can be non-inflationary or even deflationary, because more output per worker lowers costs. The Federal Reserve tries to maintain growth near "potential," the non-inflationary speed limit, which is why it raises rates when growth accelerates above trend.

Q: Will AI boost US economic growth significantly? A: Goldman Sachs and other forecasters believe AI will contribute to productivity growth, which is why long-run productivity expectations have been revised upward. However, the magnitude and timing are uncertain. AI is a general-purpose technology, and historical experience suggests the productivity gains from such technologies often take years or decades to fully materialize as businesses reorganize around them. The 2026 forecast of 2.0 to 2.5% GDP growth already incorporates some AI-driven productivity gains.