MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES: The proportion of each additional dollar of national income that is used for government purchases. Or alternatively, this is the change in government purchases due to a change in national income. Abbreviated MPG, the marginal propensity for government purchases is the slope of the government purchases line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.

     See also | government purchases | national income | government purchases line | Keynesian economics | multiplier | aggregate expenditures line | marginal propensity to consume | marginal propensity to save | marginal propensity to import | marginal propensity to invest |

MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: August 15, 2026].

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A slang phrase for credit cards, especially when such cards used to make purchases. The "plastic" portion of this term refers to the plastic construction of credit cards, as opposed to paper and metal of currency. The "money" portion is an erroneous reference to credit cards as a form of money, which they are not. Although credit cards do facilitate transactions, because they are a liability rather than an asset, they are not money and not part of the economy's money supply.

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Today, you are likely to spend a great deal of time strolling through a department store wanting to buy either a lazy Susan for you dining room table or a set of serrated steak knives, with durable plastic handles. Be on the lookout for pencil sharpeners with an attitude.
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