The System of National Accounts (SNA) is the internationally agreed framework for compiling national accounts. It establishes concepts, definitions, classifications, and accounting rules that connect economic production, income, consumption, saving, investment, and wealth. Rather than prescribing a single indicator, it organizes an integrated system of accounts for macroeconomic analysis and international comparison. Gross domestic product (GDP) is its best-known aggregate, but the framework also describes how income circulates between sectors and how economic activity changes assets and liabilities. (unstats.un.org)
Development and institutional organization
The SNA’s origins lie in a 1947 report on national income statistics prepared under Richard Stone’s leadership. The first SNA, published in 1953, contained six standard accounts and twelve supporting tables. The 1968 version substantially expanded coverage by incorporating input-output accounts and balance sheets and strengthening constant-price measurement. The 1993 revision improved harmonization with other statistical standards; the 2008 revision addressed subsequent economic developments and methodological advances. (unstats.un.org)
The 2025 SNA, adopted by the United Nations Statistical Commission in March 2025, supersedes the 2008 edition as the international standard while retaining its basic theoretical framework. It is jointly published by the five organizations of the Intersecretariat Working Group on National Accounts: the United Nations, European Commission, International Monetary Fund, Organisation for Economic Co-operation and Development, and World Bank. Adoption of a standard and its implementation in national statistics are distinct processes. (unece.org)
Units, sectors, and residence
The system’s basic building block is the institutional unit: an entity capable of owning assets, incurring liabilities, and undertaking economic transactions. Resident units are grouped into five sectors: non-financial corporations, financial corporations, general government, households, and non-profit institutions serving households. Sector accounts distinguish entities by their economic functions and behavior rather than simply by industry. (www150.statcan.gc.ca)
An economy comprises units resident in its economic territory. Residence depends on a unit’s center of predominant economic interest, not simply citizenship or the nationality of its owners. Actual or intended activity for one year or more is generally an operational criterion, subject to specific exceptions. Transactions and positions connecting residents with non-residents are represented through the rest-of-the-world accounts. These principles align national accounts with balance-of-payments statistics. (elibrary.imf.org)
Accounting principles
The SNA distinguishes flows, measured over a period, from stocks, measured at a particular date. Transactions are generally recorded on an accrual basis: when economic claims and obligations arise or economic value changes, rather than necessarily when payment occurs. Market prices provide the principal valuation reference; imputed values or production costs are used where suitable market transactions are absent. Assets and liabilities are valued at current prices. (elibrary.imf.org)
Its integrated recording follows quadruple-entry accounting. Each transaction between two units generates corresponding entries for both participants, with two entries in each unit’s accounts. For example, a purchase connects a buyer’s acquisition and payment with a seller’s disposal and receipt. Consistent timing, valuation, and classification make it possible to reconcile the accounts across sectors. (elibrary.imf.org)
The sequence of accounts
The accounts form an interconnected sequence, with balancing items carrying information between stages:
- Production accounts record output and intermediate consumption; their difference is value added.
- Income accounts show income generated by production, its allocation, redistribution through taxes and transfers, and the resulting disposable income.
- Use-of-income accounts divide disposable income between final consumption and saving.
- Capital accounts connect saving and capital transfers with capital formation and acquisitions of non-produced assets, yielding net lending or net borrowing.
- Financial accounts record transactions in financial assets and liabilities, explaining how lending or borrowing is financed. (elibrary.imf.org)
A balance sheet records assets, liabilities, and net worth at the beginning or end of a period. Transactions alone do not explain changes between these positions: revaluation accounts record holding gains and losses, while other-changes accounts capture events such as asset destruction and reclassification. This stock-flow structure separates newly generated income from changes in wealth caused by asset-price movements. (imf.org)
Production boundaries and measurement
The production boundary determines which activities enter measured output. Coverage extends beyond market sales: it includes government services, goods produced for own use, and imputed housing services supplied by owner-occupied dwellings. Most unpaid domestic and personal services produced by households for themselves, such as cooking and childcare, remain outside the central production boundary; services provided by paid domestic staff are included. Consequently, measured production is not identical to all useful human activity. (elibrary.imf.org)
Supply and use tables reconcile the availability of products from domestic production and imports with their use in intermediate consumption, final consumption, capital formation, and exports. Related input-output tables describe production relationships between industries. Price and volume measures distinguish changes in monetary values from changes in quantities and quality, supporting analysis of economic growth separately from inflation. (elibrary.imf.org)
Extensions and the 2025 revision
The SNA permits satellite accounts and other extensions that develop particular subjects without replacing the integrated central framework. Its aggregates are not comprehensive measures of welfare: production and expenditure statistics do not by themselves capture every aspect of quality of life, unpaid activity, or environmental effects. (elibrary.imf.org)
The 2025 revision expands guidance on globalization, digitalization, financial developments, and the informal economy. It recognizes data as an asset and changes natural-resource accounting by treating depletion as a cost of production. This affects net measures of output, income, and saving rather than gross measures such as GDP. Renewable energy resources are explicitly recognized as economic assets where they satisfy the relevant asset criteria, strengthening connections between economic accounts and sustainable development measurement. (unstats.un.org)