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Gross Domestic Product (GDP) is an attempt to quantify the market value of all final goods and services made within the borders of a nation in a year.

This definition of GDP is so hard to understand, and the methodology to quantify GDP is so convoluted, that it should come as no surprise that the media and the politicians believe GDP is the gauge of the economy.

It does comes as a surprise that many economists also believe GDP is the economy.

GDP Explained

The concept of GDP was an attempt by economists to quantify the important core economic elements so that America’s economic activity could be gauged.

GDP does not include many economic activities,

If you buy a new car this is in GDP; if you buy a used one it is not. If you buy a new house it is included in GDP; a used house is not. And interest income is also ignored in GDP as it is an intangible. The point is that the item or service must be produced – it cannot be pre-existing. In fact, one half of all of our economic transactions are excluded from GDP. And even this statement ignores the black markets of illegal drugs, flea markets, barter transactions, Federal Reserve transactions, etc.

Wikipedia definition:

GDP can be defined in three ways, all of which are conceptually identical. First, it is equal to the total expenditures for all final goods and services produced within the country in a stipulated period of time (usually a 365-day year). Second, it is equal to the sum of the value added at every stage of production (the intermediate stages) by all the industries within a country, plus taxes less subsidies on products, in the period. Third, it is equal to the sum of the income generated by production in the country in the period—that is, compensation of employees, taxes on production and imports less subsidies, and gross operating surplus (or profits).

The most common approach to measuring and quantifying GDP is the expenditure method:

GDP = private consumption + gross investment + government spending + (exports − imports), or, GDP = C + I + G + (X − M).

Using NIPA Data Directly without GDP Filters

GDP is derived from America’s financial transaction income statement – the National Income and Product Accounts Table (NIPA). GDP filters the elements of these NIPA tables which meet the criteria for GDP.

In essence, the NIPA tables together are similar to a detailed corporate income statement with supporting ledgers (tables). Income = expenditure. GDP is derived by using the expenditure side of the NIPA tables.

In the Wikipedia definition of GDP, the third method of determining GDP is to tally the income produced in a country (highlighted above). Of course only specific income producing activities would be included in GDP. As the income side of the NIPA is not detailed, it cannot be used to derive GDP.

To get a broad picture of the economy, the entire income side of the NIPA could be used - the total income of individuals, corporations and government. A single dollar may flow many times between individuals, corporations and government in each period. Nothing is excluded - interest used to finance the economy, profits from stock transactions, flipping houses, etc.

As the total NIPA income is $24 trillion (individual + corporations + government), it provides a broader view of the economy. It could be argued that this total NIPA income is the economy.

As GDP is a subset of the NIPA tables, it is expected that the movements of both should be similar. The graph below illustrates the QoQ changes to both real GDP and the NIPA total income. As the economy is being more broadly viewed with a larger sampling, there is much less volatility (noise).

A total income approach to viewing the economy creates a less volatile data set, it is easier to trend. For instance, it is easy to see that since 2006 we have been in a cyclical down trend. This is much closer to alignment with the start of the recession in December 2007 than is the peak in GDP, which occurred in the middle of 2003. GDP has been in a cyclical down trend (with considerable volatility noise) since then.

There are two tables used to create this NIPA total income – Table 6.1D which tallies the income of business and government, and Table 2.1 which tallies personal income. In both cases, the gross income was used without adjustment.

Unfortunately, Table 6.1D. National Income without Capital Consumption Adjustment by Industry has not been updated for 2Q 2009. This table provides the corporate and government figures. We will have to wait until 27 August 2009 to see 2Q results.

Table 2.1 provides personal income and was updated for 2Q 2009. Personal income is ½ of the total NIPA income. There was not much difference in personal income between 1Q and 2Q. Personal income grew by only 0.07% from the first quarter to the second, while wages and salaries in the private sector declined by 1.48%. Government paid wages and salaries grew by 1.02%. Personal current taxes declined and disposable income increased.

Although this income data could be fine tuned (such as removing taxes), there was no noticeable effect on the interpretation of the data. When data is not manipulated or adjusted, the results are easier to accept. If the data is detailed, an analyst can always remove an element which is determined is not appropriate for a particular analysis.

Using Total NIPA Income to Plot Economic Cycles

As NIPA total income is now trapping more of the economy than GDP, velocity of money calculations are more precise. Velocity of money analysis can be used to understand economic expansion and contraction cycles.

It is significant that using NIPA total income to determine velocity of money, we had a growth (expansion) cycle peak in 4Q 2007 – an exact marker for the beginning of our Great Recession.

It may be that velocity of money stopped declining at the end of 2008. However, 2Q 2009 results will not be published until later this month. I will revisit this velocity of money analysis when data becomes available.

If the 2Q 2009 data confirms a cycle bottom, it does not conversely imply an expansion cycle has begun. It confirms that the economy is no longer contracting. There are two important points:

  • We have become Pavlov’s dogs. We are conditioned to thinking about jobs and manufacturing being the economy – like it or not, this is less than one half of the real economy. The NBER marked the beginning of this recession using jobs and manufacturing. Half of the economy is ignored.
  • As we are travelers on this economic river, what happens today was set in motion many months ago. Economic change manifests slowly. It is almost certain that the events which will lead to the end of this recession sometime this year have already occurred.

Using Total NIPA Income to Calculate Real Economic Growth

Using NIPA total income data can be used to calculate real economic growth. Real GDP is an attempt to make GDP comparable across many years by removing the effects of inflation and other phenomenon to facilitate comparison. No one fully believes the BEA's real GDP number is correct.

The objective is to calculate real economic growth. Somehow the effects of inflation and population growth must be removed.

Most analysis ignores population growth. Consider that if your population grows by 1%, the economy needs to grow by 1% just to be operating at the same economic level per capita.

Inflation is a contentious subject as very few can agree on its specific determination. Using QoQ comparisons, the actual amount of inflation will be insignificant between quarters unless we enter a high inflation or deflation cycle.

As population is growing at over 1% per year – the data is given a 1% headwind to overcome.

If this graph is correct, we have had little real economic growth this century.

Summary

Use of NIPA income for economic modeling is transparent and straight forward. Quarterly data does not go back far enough to test past economic cycles. But use of this NIPA Income data provides an improved and more realistic picture of the economy.

Using total NIPA income as an economic indicator does not create a perfect solution. It also is not the total economy, just more of the total than GDP.

Disclosures: None

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  •  
    An excellent article offering a new way to measure economic activity, which may be very useful. I like the more inclusive approach.

    But from lst graph with adjustments for population growth, it appears that not only are we not growing but that the rate of decline is still very worrisome. However, I wonder if many illegals have temporarily returned home for lack of work. I don't know the answer, just posing it for consideration. One of the things that has helped GDP growth over the years (and likely will be an even more important contributor in the future) will be increases in population growth.

    But the adjustment that you made is really an adjustment to ascertain growth in the economy on a per capita basis. I'm not certain if that is helpful in determing total change in output for a nation. It would seem that it is more a measure of the productivity of the population.
    Aug 09 10:22 AM | Link | Reply
  •  
    Is this the 'Emperor Has No Clothes' story ?
    Aug 09 10:29 AM | Link | Reply
  •  
    America is very proud of their $13 trillion GDP economy, but is it comarpable to other nations? Many large develpoing nation keep track of only exports/ imports. China has very little means of tracking GDP on Central China agriculture states, internal enonomy, what is traded and grown throughout the country. China has also artificially fixed the Yuan at 16 cents US dollar, which also artifically sets their exports,(GDP), at an unreasonalbe low level. A better way to look at comparing China's GDP is that it is the wholesale GDP of America's retail GDP. China is the worlds largest maunfacturing nation in the world in real terms.ability to make things , (not in undervalued Yaun terms)> S. American countries, are another example of countries that tax, imports and exports,simply because they have NO real way of taxing economic activity throughout the entire country. Therefore their GDP data is missleading, and not a true reflection of their economy. The US GDP when comparing to other nation, particulraly many fast developing nations, is overiflated, and has little true meaning, simply because it has such a large consumer component. 2/3 ds of American's economy is borrowing money they cannot afford and buying junk at Wal-Mart, (China's trading store).That's a GDP that is more chargrin than to be proud of...
    Aug 09 10:48 AM | Link | Reply
  •  
    At some point after I passed Economics 101, GNP became GDP. Was there substantive change or just new terminology?
    Aug 09 11:01 AM | Link | Reply
  •  
    There are instances where one only needs to know the time, not how to make a watch.


    On Aug 09 09:57 AM Ferdinand E. Banks wrote:

    > Well Steven, a non economist - Swashbuckler - can understand what
    > you are saying, while a brilliant economics teacher like myself doesn't
    > get the entire message. Maybe I don't get it because you are trying
    > to do in a short article what logically requires a long article -
    > and perhaps a very long article..
    Aug 09 02:04 PM | Link | Reply
  •  
    Hansen's methodology is as flawed as the current system, perhaps as he pointed out at the end. The simple fact is that both systems try to simplify a very very complex system. To take them on face value without understanding the meaning is like watching a cooking contest without explaining the values the judges are assigning their votes on. We just get some number than then place an emotional value upon it being good or bad. Worse stil would be to trade on the raw number. It is pretty much not very valuable.

    Perhaps my comparison to food is poor. The simple fact is unlike food that has nutritional value cooked or not, GDP without deeper analysis is pretty much worthless. To prove my point thoroughly, it can't even see a recession until it's already in full swing. Such a number is not mystical and certainly not all it's cracked up to be. Just like hearing about corporate earnings without knowing how the money was earned. That's why having bank disclosure and transparency is so important. Their #, earnings in this case is meaningless without proper accounting, and I don't mean legal accounting where the government says it's ok to keep things off the books and assign arbitrary value (basically not discounting loss) on their bonds, mortgages, derivatives, debt instruments, and other assets.

    So can we learn from Steven Hansen's article without accepting his number. Yes, we have learned that smart people can think of many sunch numbers and one is not neccesarily better or more telling than the other without asking, what's really going on inside the equation.
    Aug 09 02:15 PM | Link | Reply
  •  
    In February at a press conference Obama stated, and it went over everyone's head at the time and still does judging from most of the comments here, that AIGs CDO and CDS acitivity should not be counted in GDP. Of course not, along with any other unearned income derived from false movement in the markets. This where the so-called $13 trillion GDP comes from, from phony non-economic activity. Real US GDP is probably around $3 to 4 trillion. Live with it. The inner core of the EU is probably exceeding the US in per capita GDP right now, the underlying reason the dollar has been trading in the $1.40 to 1.45 vs. Euro range for some time now. We are well on our way to Second World status and don't even know it!
    Aug 09 02:31 PM | Link | Reply
  •  
    " Since, government produces nothing of economic value, assigning a number to "government income" is fictitious anyway."...Geezer Bela in Exile.

    Assigning ANY positive economic value to government activity, especially a positive "government income", is specious at best, duplicitous at worst. Since it is the proclivity of government to spend all that it gets and to conspire to get even more "income" for the next fiscal year, government activity should, economically, be considered a negative on the economy. Government, on aggregate, is an actual drag on the economy.

    The FAA, FBI, CIA , INS, pre-9/11 and the SEC, FDIC, FNMA, FRE (need I go on) in the last ten years come readily to mind. Whatever government may add to the US economy, with such tangibles as infrastructure, it takes away later with perfidy and incompetence. The reckoning balance is never in favor of the taxpayer, therefore "government income" will always a net loss to the economy.
    Aug 09 02:39 PM | Link | Reply
  •  
    For much more on what's wrong with GDP and GNP and NIPA, go to beyond-gdp.eu which has the TV and print Proceedings in six languages of the BEYOND GDP debate in the European Parliament , Nov, 19-20 , 2007 , of which I was a co-organizer .
    My company, Ethical Markets( USA and Brazil ) and GlobeScan , the London-based survey firm conducted a survey on Beyond GDP for the EP in ten countries, Results also at this site , and at EthicalMarkets.com and GlobeScan.com
    Aug 09 02:41 PM | Link | Reply
  •  
    Moon - - -

    You said, "GDP without deeper analysis is pretty much worthless. To prove my point thoroughly, it can't even see a recession until it's already in full swing. Such a number is not mystical and certainly not all it's cracked up to be."

    For anyone who misses the significance of this statement, GDP is a scorecard (and flawed, as commenters and the author have pointed out) of economic activity. It does not predict anything. Of course GDP does not see a recession until it is in full swing. GDP tells you what has already happened, not what is coming. (Well, sort of tells you what has already happened, if you are willing to accept the part of the story represented by GDP.)

    The fact that GDP is flawed as an economic indicator is most recently exemplified by the rise in 2Q/08 GDP in the middle of a recession, as officially declared by the nber. Of course, the call of a recession start in December, 2007 (per nber) can be debated, as well. I recall the author has discussed this point several times in the past here on SA.

    Geezer Bela - - -

    You either were not aware or decided not to recognize the author's past work discussing the potential problems with nber's call of 12/07 when you wrote: " Hansen's thesis is that the current recession began in Q4 2007."

    Mark Bern - - -

    Good comments. The author did not mention it here, but he has pointed out that real GDP has been in a long-term decline in previous articles. My own articles have documented that decline, which started about 50 years ago and reached an inflection point in the early 1980's to decline more steeply since then. If GDP is expressed per capita, the decline is steeper still.

    As you point out, per capita GDP might be related to productivity. This is a topic worth examining in detail because the official productivity measurements show productivity increasing for quite a long time (many years). I think the reason is that GDP per capita should correlate with productivity of society as a whole, while productivity statistics correlate to what is produced by the labor force or, perhaps, by the employed, both of which have had declining representation in the total population. I'll look at the numbers - maybe there is a story worth telling there.
    Aug 09 04:20 PM | Link | Reply
  •  
    Joyful Alternative - - -

    GDP is a broader measurement of economic activity. It attempts to measure (with debatable success - see several comments above) the the value of all goods and services produced within a nation's borders regardless of the nationality of the producer. GNP excludes the domestically produced products and services of foreign corporations. A brief definition can be found at Encarta
    encarta.msn.com/encycl...
    Aug 09 04:29 PM | Link | Reply
  •  
    Prof. Banks - - -

    You wrote; "Maybe I don't get it because you are trying to do in a short article what logically requires a long article - and perhaps a very long article.. "

    Of course you are correct. However, there are limits to what SA readers will tolerate in length of articles (and SA editors probably have some limits as well). I welcome this article and accept its limitations as not qualifying at the Ph.D. thesis level. However, I do think it offers a great deal of clarification to a topic that keeps getting brought up piecemeal. I would urge you to accept this for what it is (a succinct summary of some important issues) and not reject it for what it is not (a detailed academic research document). Now maybe I am getting more out of this than you because of my much lesser experience in academic economics. So feel free to give me a lecture if I deserve it, but also let me appreciate the added organization of issues that this article (and some of the comments) has allowed for me.
    Aug 09 04:41 PM | Link | Reply
  •  
    Regarding GDP as a flawed indicator, one of my favorite quotes from Warren Buffett is "I could hire ten thousand people to paint my portrait. And GDP would go up."
    Aug 09 04:48 PM | Link | Reply
  •  
    I believe the P in GDP is Product. Old products were counted earlier when they were originally produced and should not be counted in the current GDP. A countries expansion is driven by creation of NEW products, producing new products is what drives manufacturing, agriculture and many service (not all svcs) jobs growth. In addition it shows an expanding economy to the rest of the world.
    Aug 09 06:46 PM | Link | Reply
  •  
    good comment stream. i appreciate and welcome this debate. thank you for keeping it civil.

    i guess the real point which did not come out clear enough - but is the opposite of sunnsea's "Real US GDP is probably around $3 to 4 trillon".[although i agree with this statement]

    we do not make anything. we only have 11 million people involved in manufacturing. this recession, and the great depression were caused by non-gdp economic factors.

    gdp tries to measure what we make, but our economy is much larger. if we want a measure of what we make - GDP is good.

    if we want to understand what is really going on, we must look for broader economic tools.

    i openly admit this method is not perfect, and still does not capture the total economy. but i does capture more of the real economy you and me use to REALLY make our money than using GDP only.

    and thank you John Lounsbury for accurately clarifying my position.
    Aug 09 07:38 PM | Link | Reply
  •  
    "Imagine a poor country where there are lot of sales of second hand goods. To include these sales would make the country look like a rapidly developing country when in fact it is dirt poor." - American In Paris

    Yes if looked at from a "Sales Point". If you have all your needs met are you not "Rich". (However In Socialism One Exists, Yet Never Really Lives From The Standpoint Of "Effort To Reward")

    Always think about what "Statistics Represent". GDP is not a measure of "Wealth" - It is "Supposedly" A Metric Of "Wealth Production".

    A Mind Game:

    If tomorrow - for a month - nothing was produced, imported or "thrown away" - If order persisted - would calamity come. GDP = Zero in this case. I am positive that the human race would persist. (does not mean there would not be suffering of those not prepared or already "On the Edge")

    WAAYYYY Over Simplification To Be Sure.

    According To Human Precept - It Only Becomes An '"Issue" If You Are Personally Effected.

    Many are "Becoming Personally Effected".

    The Powers That Be Are Hoping To Increase "Reliance On Services" To "Quell Dissent" As Of Late. How Will It Effect GDP If All Are On The Government "Dole". How Many Will "Bite The Hand That Feeds".

    The Price Of Freedom Is Eternal Vigilance.

    Slavery Does Not Always Involve Shackles.


    On Aug 09 10:13 AM American in Paris wrote:

    > Of course GDP does not include sales of used cars. The used car was
    > included in GDP when it was made! Similarly, only sales of new houses
    > are included because sales of 'second hand' houses were included
    > when they were first built.
    >
    > By excluding subsequent transactions of a good, GDP avoids double
    > counting.
    >
    > Imagine a poor country where there are lot of sales of second hand
    > goods. To include these sales would make the country look like a
    > rapidly developing country when in fact it is dirt poor.
    Aug 09 07:41 PM | Link | Reply
  •  
    I personally would like to see the stats on "GDP/Per-Capita" or " Per-Capita/GDP".

    This would be a better measure of - Who Is Contributing Most To "Production". (too bad it would more than likely be "Extremely Fudged" by Those Nations With A Popularity Complex. ALL Statistics Are Subject To Sampling)

    To All - Civil Discourse Allows For Exploration Of Complexity And Nuance - Thank You For Your Adherence.

    Great Humans Crave Knowledge And Are More Cynical OF Their Own Short Comings.

    Pessimism Is "Optimism With Contingency".
    Aug 09 07:57 PM | Link | Reply
  •  
    Steven-
    Thanks for clarifying the point that not only is GDP flawed as an economic growth indicator, but specifically because it emphasizes measures of new manufactured goods. Something becoming less relevant in today's economy.

    My own takeaway from this article was that the definitions, techniques and procedures for calculating GDP are so convoluted, it's fairly easy to make it whatever it needs to be. Hence, the consumptionless and jobless recovery. Another case for simplicity and transparency.
    Aug 10 02:54 AM | Link | Reply
  •  
    John: I do enjoy your reads. I do not demand that GDP forecast the future but is it too much to ask that it at least represents the past in a timely matter. My point is that GDP incorrectly recorded the recession as not being one initially and only revised their recording of history when it became obvious they were wrong. Thus it is clearly far from perfect.

    You are correct that even this is if you take their revisionist version of economic history as truth. I still thenk they don't really properly account for the level of pain being suffered by the general public right now. Not just GDP business is suffering. A lot of non-GDP business is suffering even worse. Cash for clunkers just drives the GDP number up when they buy a new vehicle at the cost of less buying of used vehicles non-GDP. Thus the GDP rigging is alive and kicking still. History is written by the victors. GDP is a component of that.
    Aug 10 07:15 PM | Link | Reply
  •  
    Have you all heard of the Human Development Index (HDI)?

    hdr.undp.org/en/statis.../

    Hazel made reference, above to what the European Parliament is doing. These perspectives expand the purpose and intent.
    Aug 12 03:43 PM | Link | Reply
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