In the previous post, [The Origin Story of GDP: How to Measure Wealth] we briefly mentioned the origin story of GDP. This time, let’s go a bit deeper by comparing GDP and GNP. GDP and GNP are not merely statistical figures; they represent different perspectives on how to view a nation’s economy. One is based on “territory,” and the other on “nationality.” This distinction has become even clearer in the era of globalization.
The Origins of GDP and GNP
GDP and GNP both emerged to measure the size of a nation’s economy. As industrialization and global trade expanded, countries began asking, “How large is our economy?” And naturally, another question followed: “How do we quantify this?”
Especially after the Great Depression and the World Wars of the 20th century, measuring a nation’s total productive capacity in numbers became central to policymaking. GDP and GNP started from the same necessity, but they diverged based on what they chose as their central standard. The difference lies in whether production should be measured based on the “place” where it occurred or the “nationality” of the person who produced it.
The Standard of Production: Location or Nationality
If a car is produced in a factory located in the United Kingdom, that production is included in the UK’s GDP, regardless of whether the worker is American or Korean. This is because the production took place in the “location” of the UK.
On the other hand, if a British citizen works in a factory in the United States and produces a car, that production is included in U.S. GDP but is also reflected in the UK’s GNP. GNP looks at “who” produced the output.
In this way, GDP is location-based, while GNP is nationality-based.
The Philosophical Difference Between GDP and GNP
GDP asks, “How much was produced within this land?” GNP asks, “How much did our citizens earn, wherever they are?” At first glance, they may seem similar, but their underlying premise is different.
GDP shows how actively economic activity is taking place within a country’s territory. It is directly connected to employment, tax revenue, and industrial structure. In contrast, GNP measures the total economic influence of a country’s citizens, including income earned by companies and workers operating abroad.
When the question differs, policy direction also changes. Should domestic industrial development be prioritized, or should overseas investment expansion be encouraged? Strategy shifts depending on which indicator is emphasized. That is why GDP and GNP carry meaning beyond mere calculation methods.
What GDP Shows
GDP shows the production and employment that actually occur within a country. All economic activities—factories, construction sites, and service industries—are counted based on whether they took place within the country’s territory.
This directly affects tax revenue and policy decisions. It is the most intuitive indicator of how active the domestic economy is.
What GNP Shows
GNP is based on nationality. It includes income earned by citizens abroad.
In countries with active global corporate activities, the gap between GNP and GDP can widen. If overseas investment income is high, GNP may increase while GDP remains unchanged.
What Is GDP?
Let’s review what GDP means.
GDP is the total market value of all newly produced goods (such as automobiles, graphics cards, and smartphones) and services (such as delivery services, haircuts, and legal consultations) within a country’s territory during a given period. The key criteria are “territory” and “newly produced.”
Only newly produced output is counted in GDP. If an already existing asset merely changes ownership, it is not included.
What Is Not Included in GDP
The following are not included in GDP:
- Private sales of used cars
- Sales of existing apartments
- Stock transactions
- Sales of used graphics cards
Money changes hands in these cases, but no new production occurred in that year.
What Is Included in GDP
By contrast, the following are included in GDP:
- Manufacturing a new car in a factory
- Constructing a new apartment
- Producing a new graphics card
These are included because new production has taken place.
Characteristics of GDP
GDP includes not only manufacturing but also healthcare, education, IT, and the content industry. In modern advanced economies, the service sector accounts for well over half of total output.
If a disaster occurs, reconstruction and rebuilding efforts may increase GDP. GDP measures production, not happiness or quality of life directly.
What Is GNP?
GNP is the total income and production generated by a country’s citizens anywhere in the world. Nationality is the key standard.
For example, if a country’s company earns significant profits from a factory overseas, that production is not included in the home country’s GDP but is included in its GNP.
(For simplicity, remember that GDP is territory-based and GNP is nationality-based. Income equals production.)
GNP and Overseas Income
Income earned by citizens working abroad is included in GNP. However, that production is counted in the GDP of the country where it physically occurs.
Real Differences Between GDP and GNP
If a multinational corporation produces domestically, GDP increases. However, if profits are remitted to a foreign headquarters, GNP may not fully reflect that increase.
Conversely, if a country’s company earns large profits overseas, GNP rises while GDP remains unchanged.
What Are We Ultimately Looking At?
Neither GDP nor GNP is absolutely superior. The important question is: what do we want to measure?
If you want to see how active economic activity is within a country, how much employment and production have increased, you look at GDP. If you want to see how much economic influence your citizens exert worldwide, you look at GNP.
Ultimately, GDP views the economy based on land, while GNP views it based on people. Even when examining the same economy, the picture changes depending on where the focus is placed.
Look Beyond the Numbers
When analyzing GDP and GNP, focusing only on numerical growth can cause you to miss the direction.
You should also examine which industries are growing, how significant overseas income is, and how the economic structure is changing.
Numbers are the result. Structure is the essence.
