I
know that this may seem like a bunch of gibberish, but in fact, this is a quite
simple and straightforward formula for understanding the size and performance
of our economy. Most of us hear the GDP (Gross Domestic Product) reports on the
news and have some vague idea of what these reports actually mean, while others
have no idea what GDP is. Let’s break it down:
First off, GDP is just an accounting
measure of all “final goods and services” sold in America (or whichever country
you may reside in). “Final goods”. What does that even mean? Well, the easiest
example of a final good is a new car. When a new car is sold it is counted
toward GDP, but individual parts: tires, engine, airbags, etc… that make up the
car are not counted in order to avoid double-counting. Some countries, most notably China, calculate
GDP by counting all goods produced, rather than sold. This method can lead to a
distorted picture of how the economy is actually performing.
Y=C+Ig+G+(x-n). The meaning of the letters
in the formula is quite simple. ‘Y’ is National Income, or GDP. To get ‘Y’ we
need to add up all of the other categories first. The four categories that
comprise GDP are as follows:
‘C’ stands for consumer spending. Every
dollar spent in the last year on goods and services. This is by far the largest
portion of GDP, comprising more than 70% of the total.
‘Ig’ stands for capital investment* by
businesses. * ‘Capital’ in economics means “things that make other things”, or
tools that make money, such as a printing press, a new truck, or harvester,
etc…
‘G’ stands for government spending.
‘(x-n)’ stands for exports minus imports.
Once you
have all of these figures, all you have to do is simply add them up, and
eureka! You have calculated gross domestic product.