GDP

Gross Domestic Product (GDP) is the sum of the market value of all final goods and services produced within a country over a given period, and is a key indicator for measuring the size and growth rate

GDP

Overview

GDP (Gross Domestic Product) is the sum of the market value of all final goods and services produced within a country's territory over a given period (usually one year). It is used as the most representative indicator for measuring the size and growth rate of economic activity. GDP can also be calculated as the sum of consumption, investment, government spending, and net exports.

Main Content

Definition and History of GDP

The concept of GDP was first systematically organized in a report submitted by Simon Kuznets to the U.S. Department of Commerce in 1934. Later, in 1944, under the Bretton Woods system, it was adopted as a standard for comparing the economic sizes of countries and became internationally standardized. Today, international organizations such as the World Bank and the IMF calculate and publish the GDP of each country.

Methods of Calculating GDP

GDP can be calculated using three main approaches. First, the production approach sums the value added of each industry. Second, the expenditure approach sums consumption (C), investment (I), government spending (G), and net exports (X-M), which represent a country's total demand. Third, the income approach sums all income generated in the production process, including wages, interest, profits, and rent. In theory, the three methods produce the same results, but in practice, differences may arise depending on each country's data collection conditions.

Nominal GDP and Real GDP

Nominal GDP is calculated at current market prices and reflects price changes. Real GDP is converted using prices from a base year and reflects changes in actual output by removing the effects of price fluctuations. Economic growth rates are usually measured as the growth rate of real GDP. The GDP deflator, calculated by dividing nominal GDP by real GDP, indicates the price level.

GDP per Capita

GDP per capita is the total GDP divided by the population, and is useful for comparing the average economic level of a country. When comparing living standards between countries, GDP per capita adjusted by purchasing power parity (PPP) exchange rates is also used. However, because it does not reflect income distribution inequality, it is sometimes used alongside the Gini coefficient or the Human Development Index (HDI) to supplement actual living standards.

Limitations of GDP

GDP is useful for measuring the size of economic activity but has several limitations. First, non-market economic activities (household labor, volunteer work, etc.) are excluded. Second, it does not reflect income distribution and inequality. Third, negative externalities such as environmental destruction or resource depletion can be counted as positive economic activity. Fourth, income earned by nationals abroad is excluded (a difference from GNP). Fifth, the underground economy and illegal activities are often not captured in statistics. Due to these limitations, alternative indicators such as the GPI (Genuine Progress Indicator) and happiness indices have been proposed in recent years.

Concepts Related to GDP

Gross National Income (GNI): The concept of GDP plus net factor income received from abroad, representing income on a national basis.
Net Domestic Product (NDP): The net production value obtained by subtracting capital depreciation from GDP.
Potential GDP: The maximum level of production that can be achieved when all factors of production are fully employed.

Recent Trends

In 2024–2025, the global economy has shown a recovery trend after the COVID-19 pandemic, but geopolitical risks such as the Russia–Ukraine war and Middle East conflicts, tight monetary policies by major central banks, and inflationary pressures have been affecting GDP growth. The IMF projected global GDP growth of 3.2% in 2024 and 3.3% in 2025. The United States is expected to record a growth rate of 2.8% in 2024, supported by solid consumption and the labor market, while China is expected to grow at around 4.8% amid a property crisis and weak domestic demand. The eurozone is expected to continue experiencing low growth despite stable energy prices and a manufacturing recovery. South Korea's growth rate is expected to fall to around 2% in 2024 due to sluggish domestic demand despite strong exports. In addition, major countries are seeking sustainable growth by simultaneously promoting high-tech industries such as semiconductors and AI and carbon neutrality policies to complement the limitations of GDP.

GDP