Browse Economics

Capital Stock and Formation

Capital-stock and capital-formation terms for linking investment spending, productive capacity, and growth assumptions.

Capital Stock and Formation 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 Capital Stock, Formation, and Investment, 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
CapitalCapital is the stock of productive resources, financial funding, or ownership claims that supports production and investment.
Capital FormationCapital formation is the process of adding to an economy’s productive assets through investment, saving, and retained resources.
Gross Domestic Capital FormationGross domestic capital formation measures domestic investment in fixed assets, inventories, and other capital formation during a period.
Gross Domestic Fixed Capital FormationGross domestic fixed capital formation measures investment in fixed assets such as structures, equipment, machinery, and infrastructure.
Gross Fixed InvestmentGFI measures the total expenditure on new fixed assets by businesses, governments, and households.
Structural CapitalStructural capital is organizational knowledge, systems, processes, and intellectual infrastructure that support productive capacity.

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.

Capital

Capital is the stock of productive resources, financial funding, or ownership claims that supports production and investment.

Capital Formation

Capital formation is the process of adding to an economy's productive assets through investment, saving, and retained resources.

Gross Domestic Capital Formation

Gross domestic capital formation measures domestic investment in fixed assets, inventories, and other capital formation during a period.

Gross Fixed Investment

GFI measures the total expenditure on new fixed assets by businesses, governments, and households.

Structural Capital

Structural capital is organizational knowledge, systems, processes, and intellectual infrastructure that support productive capacity.

Revised on Sunday, June 21, 2026