Toddsterpatriot, it's not MY formula, the expenditure method of calculating GDP is the most generally used among economists, statisticians, and academicians throughout the the entire world. Although transfers of wealth, (i.e. transfer payments) are not directly included within the GDP, when the money is spent to produce or purchase goods or service products, the values of those products are attributed to, (i.e. increase the) GDP of the nations' where those product productions actually occurred. Respectfully, Suppposn
Some references are:
Why are financial transactions not included in GDP? | EveryThingWhat.com
Why are financial transactions not included in GDP?
Financial transactions and income transfers are excluded because they do not involve production. They do not involve current production, and therefore these transfers are not included in GDP. GDP is a measure of production through markets. Non-market productive activities are omitted.
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What Is a Transfer Payment?
A transfer payment is a one-way payment to a person or organization which has given or exchanged no goods or services for it. This contrasts with a simple "payment," which in economics refers to a transfer of money in exchange for a product or service.
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No,
Social Security payments are not included in the U.S. definition of the
gross domestic product (GDP). Social Security payments are transfer payments, which are not included.1 They are, however, counted as
personal consumption expenditures (PCE) once they are used to purchase something. Because of this, counting Social Security payments issued from the government to the recipient would be counting the same money twice