Browse Economics

Investment Demand and Leakages

Investment-demand, injection, leakage, and unintended-investment terms used in macro-flow analysis.

Investment Demand and Leakages covers capital formation, investment spending, saving behavior, productivity, depreciation, obsolescence, and public investment funds used in finance and macro analysis.

Use these pages when productive capacity, replacement investment, capital intensity, productivity, or investment demand changes growth, margins, valuation, or public-sector investment assumptions. It sits inside Investment Behavior, Saving, and Leakages, so readers can move up when the broader economics context matters.

Use the table below to choose the narrower economics branch before applying a term to a model, credit view, market interpretation, policy conclusion, or risk review. Move into the term page when the evidence source, calculation, institution, market convention, or risk exposure matters.

What This Branch Covers

AreaUse it for
Autonomous InvestmentAutonomous investment is investment driven by policy, technology, or long-term plans rather than current income or output levels.
Induced InvestmentInduced investment rises or falls with changes in income, demand, output, or expected sales growth.
InjectionInjection refers to the introduction of income into the economy, such as investments, government spending, and exports, which enhance the circular flow of income.
Investment DemandInvestment demand is desired spending on capital assets at different interest rates, expected returns, and demand conditions.
Leakage in EconomicsLeakage in economics is income that leaves the spending stream through saving, taxes, imports, or other withdrawals.
Unintended InvestmentUnintended investment occurs when inventories change unexpectedly because production and sales do not match planned levels.

What to Check

  • Gross, net, fixed, replacement, or inventory investment measure.
  • Capital stock, depreciation, obsolescence, or productivity definition.
  • Sector, country, company, or public fund involved.
  • Time horizon and inflation adjustment.
  • Growth, margin, capacity, or valuation assumption affected.

Common Mistakes

  • Confusing gross investment with net additions to capital stock.
  • Ignoring depreciation and obsolescence.
  • Treating productivity as the same thing as output growth.
  • Mixing company capital expenditure with national-account investment measures.

Capital and productivity explanations are educational and do not recommend a project, security, fund, or allocation.

In this section

Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.

Autonomous Investment

Autonomous investment is investment driven by policy, technology, or long-term plans rather than current income or output levels.

Induced Investment

Induced investment rises or falls with changes in income, demand, output, or expected sales growth.

Injection

Injection refers to the introduction of income into the economy, such as investments, government spending, and exports, which enhance the circular flow of income.

Investment Demand

Investment demand is desired spending on capital assets at different interest rates, expected returns, and demand conditions.

Leakage in Economics

Leakage in economics is income that leaves the spending stream through saving, taxes, imports, or other withdrawals.

Unintended Investment

Unintended investment occurs when inventories change unexpectedly because production and sales do not match planned levels.

Revised on Sunday, June 21, 2026