National saving equals: Y - C - G when Y is GDP, C is consumption, I is investment, and G is government spending and there is no international trade.
In a closed economy, national savings (NS) equals the sum of private and public saves, or GDP - C - G.
The government budget deficit is equal to G - T in cases where Y is GDP, C is consumption, I is investment, G is government expenditure, T is net taxes, and there is no international trade. When there is a surplus in the government budget, public saving is beneficial.
In economics, the total of a nation's private and public savings is its national saving. It is the same as a country's income less its government and consumer spending.
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