Capital formation describes investment in assets within an economy. In national accounts, gross capital formation includes gross fixed capital formation, changes in inventories, and acquisitions less disposals of valuables.
It measures activity during a period, such as a quarter or year. It is different from the capital stock, which measures assets held at a point in time. Gross investment can replace worn-out assets without increasing the net stock by the same amount.
What counts as capital formation?
Gross fixed capital formation, or GFCF, covers acquisitions less disposals of produced fixed assets. These include buildings, machinery, transport equipment and qualifying intellectual property products such as software. Dwellings also count: capital formation is not limited to factories.
The OECD explains the fixed-asset measure. At the whole-economy level, a sale of an existing asset between two resident producers generally transfers ownership rather than creating an equivalent new asset for the economy.
Changes in inventories cover additions to stocks of materials, unfinished production and finished goods, less withdrawals and relevant losses. A rise in the market price of goods already held is not itself new inventory investment.
Valuables are produced items held mainly as stores of value rather than for production or consumption, such as certain works of art. The ONS glossary sets out the three components of gross capital formation.
Gross investment versus net investment
Gross means before deducting consumption of fixed capital, the national-accounts allowance for assets wearing out or becoming obsolete through normal use and aging.
Suppose an economy records $100 million of gross fixed capital formation in a year and $70 million of consumption of fixed capital. Net fixed capital formation is $30 million. Ignoring other changes and valuation effects, that net amount adds to its net fixed capital stock.
The same distinction means positive gross investment can coexist with declining net capital if consumption of fixed capital is greater. The US Bureau of Economic Analysis explains investment, depreciation and capital stocks.
Investment is different from its financing
A company can finance a new machine using retained earnings, a bank loan or newly issued shares. Those are financing arrangements; the machine is the fixed investment. Buying existing shares or lending money abroad does not, by itself, count as domestic capital formation.
Similarly, foreign direct investment is a financing and ownership concept. It may fund new facilities or purchase an existing business. The World Bank distinguishes it from fixed capital formation.
How capital formation relates to growth
Productive investment can expand capacity and improve output per worker. Its results depend on the quality of projects, demand, skills, technology and how assets are used. Higher investment does not automatically guarantee faster growth or higher living standards.
Saving and investment are linked through national accounting and financial flows. In an open economy, domestic investment can also be financed from abroad. Capital formation is one part of gross domestic product, or GDP, under the expenditure approach, rather than a complete measure of an economy’s financial health.
Last checked and updated on November 10, 2026 by the MBN editorial team.