GDP Expenditure Formula (National Income Identity)
The expenditure approach to calculating Gross Domestic Product (GDP) is summarized by the national income identity, which defines GDP as the sum of five main spending components: Consumption (C), Fixed Investment (I), Inventory Investment (II), Government Spending (G), and Net Exports (X - M). The net exports term represents the difference between the value of goods and services sold abroad (exports, X) and those purchased from abroad (imports, M). The identity is expressed with the formula: . Often, fixed investment and inventory investment are combined into a single 'Total Investment' category.
0
1
Tags
Economics
Economy
Introduction to Macroeconomics Course
Ch.3 Aggregate demand and the multiplier model - The Economy 2.0 Macroeconomics @ CORE Econ
The Economy 2.0 Macroeconomics @ CORE Econ
CORE Econ
Social Science
Empirical Science
Science
Related
Investment (I) in GDP
GDP Components in Major Economies (Example)
GDP Expenditure Formula (National Income Identity)
Consumption (C) as a Component of GDP
Government Spending (G) as a Component of Aggregate Expenditure
An economy reports the following activities for a single year (all figures in billions of dollars): A domestic firm purchases new machinery for $150, the total value of unsold goods in warehouses increases by $50, household spending on new cars is $200, the government pays $100 in salaries to public school teachers, and the government distributes $75 in unemployment benefits. Based on this information, what is the total value of Investment for this year?
Match each economic transaction to the specific component of GDP it would be categorized under, based on the expenditure approach.
Correcting a GDP Calculation
A country experiences a significant increase in its trade deficit (imports growing much faster than exports). This event, by itself, will necessarily lead to a decrease in the country's Gross Domestic Product (GDP).
Calculating GDP from Expenditure Data
Distinguishing Consumption from Investment in GDP Accounting
A country's automotive company produces $100 million worth of cars in a single year. During that year, it sells $70 million worth of cars to domestic households and exports $20 million worth to foreign buyers. The remaining $10 million worth of cars are not sold and are added to the company's inventory. Based on the expenditure approach, what is the total contribution of these activities to the country's Gross Domestic Product (GDP) for that year?
The government of a country spends $50 billion on a new high-speed rail project. Of this total amount, $10 billion is spent on specialized equipment imported from another country. All other expenditures are on domestically produced goods and services. What is the immediate net effect of this project on the country's Gross Domestic Product (GDP)?
Impact of Inventory Changes on GDP
Suppose a country's Gross Domestic Product (GDP) was exactly the same in Year 1 and Year 2. Which of the following scenarios is the only one that could explain this observation, assuming all values are in billions of dollars?
Government Spending in GDP
Exports (X)
Imports (M)
Aggregate Demand (AD)
Net Exports (Trade Balance) in GDP
GDP Expenditure Formula (National Income Identity)
National Income Identity in a Closed Economy without Government
An economist makes two statements about a simplified economy's total output (Y):
Statement A: Y ≡ C + I_p + I_u (where C is consumption, I_p is planned investment, and I_u is unplanned inventory investment)
Statement B: Y = C + I_p (where C + I_p represents total planned expenditure)
Which of the following correctly analyzes the relationship between these two statements?
Analyzing Economic Statements
Applying the National Income Identity
The statement 'Total Output = Total Expenditure' is a fundamental accounting rule that holds true at all times, even when firms experience unexpected changes in their inventories.
Match each macroeconomic equation with the statement that best describes its nature. (Assume a simple closed economy where Y=Output/Income, C=Consumption, S=Saving, I_p=Planned Investment, I_u=Unplanned Investment, S_p=Planned Saving)
Definitional vs. Conditional Economic Relationships
In a given year, a simplified closed economy without a government experiences a situation where firms' total production (Y) exceeds the total amount of goods and services that consumers (C) and firms (for planned investment, I_p) intended to buy. Which of the following relationships holds true by definition as an accounting rule in this specific scenario?
Correcting an Economic Misconception
An economist analyzes a simplified economy and finds that total production for the year was $10 trillion, while planned consumption was $7 trillion and planned investment was $2 trillion. The economist concludes: "Since planned spending ($9 trillion) does not equal production ($10 trillion), the fundamental accounting rule that 'Total Output is definitionally equal to Total Spending' is violated in this case."
Which of the following provides the most accurate critique of the economist's conclusion?
Transforming an Economic Equation
Learn After
A domestic manufacturing firm produces $50 million worth of goods in a specific quarter. During that same quarter, it sells $40 million of these goods to domestic consumers and adds the remaining $10 million of unsold goods to its warehouse. Based on these transactions alone, how is the country's Gross Domestic Product (GDP) for the quarter directly affected?
An economy's total output is measured by the sum of its spending components. Match each economic transaction below with the primary component of expenditure it represents.
Calculating GDP from Expenditure Data
Rationale for Subtracting Imports in National Accounts
A government's decision to increase social security payments to retirees will directly increase the government spending component of that nation's Gross Domestic Product.
A U.S. household purchases a new car for $30,000 that was manufactured entirely in Germany. How does this transaction, by itself, affect the components of the U.S. Gross Domestic Product (GDP) as measured by the expenditure approach?
Evaluating the Impact of Imports on National Output
Reconciling National Accounts
A domestic corporation raises $20 million by issuing new shares of stock. It then uses $15 million of these funds to construct a new manufacturing plant. How do these two transactions, taken together, affect the nation's Gross Domestic Product (GDP) for the current period as measured by the expenditure approach?
A household sells its two-year-old car to another household for $15,000. To facilitate the sale, they use a dealership which charges a 5% commission fee. How does this entire set of transactions affect the current year's Gross Domestic Product (GDP) as measured by the expenditure approach?
Simplifying the Aggregate Demand Model for a Closed, Private Economy